The Influence of Social Network Behaviors on Energy and
Transcription
The Influence of Social Network Behaviors on Energy and
The Influence of Social Network Behaviors on Energy and Engagement DISSERTATION of the University of St. Gallen, School of Management, Economics, Law and Social Science and International Affairs to obtain the title of Doctor of Philosophy in Management submitted by Ulrich Leicht-Deobald from Germany Approved on the application of Prof. Dr. Heike Bruch and Prof. Tomi Laamanen, PhD Dissertation no. 4289 The University of St.Gallen, School of Management, Economics, Law, Social Sciences and International Affairs hereby consents to the printing of the present dissertation, without hereby expressing any opinion on the views herein expressed. St. Gallen, May 19, 2014 The President: Prof. Dr. Thomas Bieger Acknowledgements The present dissertation draws on several sources for its inspiration. One is a line of thought that Sumantra Ghoshal and others advanced at the end of the last century on how social relationships between employees may improve organizational performance. Another is open system theory, which continues to be held in high regard at the University of St. Gallen, as explicated in the framework of the “St. Gallen Management Model”, and enjoys a lively and productive research tradition there. Countless conversations have shaped the development of this work. First, I must thank my first supervisor, Heike Bruch, for believing in this dissertation project and providing me with a supportive academic environment that helped me to persist even in the face of setbacks. Second, I am grateful to my second supervisor, Tomi Laamanen, for challenging my ideas, which helped me to craft my arguments in a stronger and more concise manner. Additionally, a number of international colleagues helped me to sharpen my arguments and welcomed me into the scientific community. I feel particularly indebted to Chak Fu Lam, Gretchen Spreitzer, and Ryan Quinn. Furthermore, I owe thanks to AUDI AG in Ingolstadt for allowing us to collect an exquisitely rich dataset within its organization and financially supporting work on this dissertation. In particular, I am thankful to Heinz Hollerweger, our project partner at Audi, and Nina Lins, my dearest fellow in this project who shared all the ups and downs of this collaboration. Furthermore, I wish to thank Horst Glaser and Peter Fromm for participating in this research project and Thomas Sigi for his support. Last but not least, I am grateful to the numerous wonderful engineers at Audi, such as Stefan Kolpatzik and Moni Islam, to name just a few, who took part in our project and allowed me to learn more about their working world. In German, there is rather appropriate term for a fellow student: Kommilitone, stemming from the Latin commiles, literally means “brother in arms”. I am deeply grateful that I have met so many wonderful people in my academic journey whom I can call upon as brothers (and sisters) in arms. Some of the first fellows during my studies at the University of Bremen include Jörg Bergmann, Nicola Deobald, Mario Gruschinke, Anne-Lina Mörsberger, Jan Pries, Ben Rossner, and Christian Sell. I owe my deepest appreciation to Helmut Reuter: It was our early conversations on Gestalt psychology that sparked the flame of my scientific interests. Furthermore, I wish to thank my current and former colleagues of the Institute for Leadership and Human Resource Management at the University St. Gallen for their valuable feedback and support. Among them are Miriam Baumgärtner, Stephan Böhm, Kirill Bourovoi, Simon de Jong, Daniela Dolle, David Dwertmann, Andrea Fischer, Josef Fischer, Hendrik Hüttermann, Silja Kennecke, Petra Kipfelsberger, Simon Körner, Justus Kunz, Florian Kunze, David Maus, Geraldine Mildner, Ivonne Preusser, Anneloes Raes, Regina Reinhardt, Markus Rittich, Andrea Schmid, Leonie Spalckhaver, Nicole Stambach, and Slawomir Skwarek. I must give particular thanks to Sandra Kowalevski, my office mate, for sharing my thoughts, sorrows, and hopes throughout the course of this dissertation and Jay Binnewies for spending many hours proofreading this dissertation. Also, I would like to express my gratitude to the Swiss National Science Foundation for kindly providing financial support for my visiting scholarship to the ICPSR Summer Program 2012 in Ann Arbor, Michigan. Further thanks to the library of the University of St.Gallen for providing access to the constitutive academic literature of this dissertation. Moreover, I owe thanks to the members of my academic peer mentoring group, namely Xena Welch Guerra, Marta Widz, Emmanuelle Reuter, and Michael Boppel, for their support. Deepest thanks to Simon Albrecht for being a good-hearted friend and companion for nearly three-quarters of my lifetime. Last but not least, I am delighted to thank my family. I feel deeply grateful to my parents, Johanna und Siegfried Leicht, for their unquestioning love, trust, and support throughout the years. My deepest gratitude goes to my precious wife, Nicola Deobald, and my beloved son, Jakob. They helped me to remember what is truly important in life when I was struggling with this dissertation. I thank them for their support and love, for letting me follow my good daimōn, and simply for being in my life. Ann Arbor, Michigan., July 2014 Ulrich Leicht-Deobald I Table of Contents List of Figures ......................................................................................................... IV List of Tables ........................................................................................................... V List of Abbreviations .............................................................................................. VI Abstract ..................................................................................................................... 1 1 Introduction ............................................................................................................. 3 1.1 Abstract ............................................................................................................... 3 1.2 The Positive Organizational Scholarship Perspective ........................................ 4 1.2.1 Core Ideas of the Positive Organizational Scholarship Perspective ............. 4 1.2.2 Theoretical Relevance ................................................................................... 6 1.2.3 Practical Relevance ....................................................................................... 9 1.3 Motivation and Research Focus ...................................................................... 11 1.3.1 Can Organizations Be Economically Productive and Simultaneously Provide Space for Positive Social Interactions?................................................ 11 1.3.2 Analysis of Positive Social Interactions at Multiple Organizational Levels ........................................................................................................... 14 1.3.3 Team Boundary Activities........................................................................... 16 1.3.4 Collective Human Energy in Organizations ................................................ 18 1.3.5 Intraorganizational Social Networks ........................................................... 21 1.4 2 Outline of the Dissertation................................................................................ 24 Linking Team Boundary-Buffering Activities and Innovative Performance: ... A Moderated Mediation Model ........................................................................... 27 2.1 Abstract ............................................................................................................. 27 2.2 Introduction ...................................................................................................... 28 2.3 Theoretical and Hypotheses Development ....................................................... 31 2.3.1 Team Boundary-Buffering Activities and Team Productive Energy .......... 32 2.3.2 The Moderating Effect of Chronic Team Work Demand Overload ........... 34 2.3.3 Team Productive Energy and Team Innovative Performance .................... 35 2.3.4 The Mediating Effect of Team Productive Energy ..................................... 37 2.4 Description of Study Methods .......................................................................... 38 2.4.1 Data Collection ............................................................................................ 38 2.4.2 Sample ......................................................................................................... 39 II Table of Contents 2.4.3 Measures ........................................................................................................ 9 2.5 Analyses and Results ........................................................................................ 41 2.5.1 Discriminant Validity of Measurement Model ........................................... 41 2.5.2 Analysis of Research Model........................................................................ 43 2.5.3 Test of Hypotheses ...................................................................................... 43 2.5.4 Robustness Check ........................................................................................ 48 2.6 Discussion ......................................................................................................... 49 2.6.1 Summary and Theoretical Contribution ...................................................... 49 2.6.2 Practical Contribution .................................................................................. 52 2.6.3 Limitations and Future Research ................................................................. 52 2.6.4 Conclusion ................................................................................................... 53 3 How Does Transformational Leadership Increase Team Productive Energy? The Role of Team Boundary-Spanning Activities and Diversity ..................... 55 3.1 Abstract ............................................................................................................. 55 3.2 Introduction ...................................................................................................... 56 3.3 Theoretical Background and Hypotheses Development .................................. 57 3.3.1 The Motivational Potential of Resources .................................................... 57 3.3.2 Team Boundary-Spanning Activities and Team Productive Energy .......... 58 3.3.3 Transformational Leadership and Team Boundary-Spanning Activities.... 59 3.3.4 The Mediating Role of Team Boundary-Spanning Activities .................... 60 3.3.5 The Moderating Role of Demographic Diversity........................................ 61 3.4 Methods ............................................................................................................ 62 3.4.1 Data Collection ............................................................................................ 62 3.4.2 Sample ......................................................................................................... 63 3.4.3 Measures ...................................................................................................... 63 3.5 Analyses............................................................................................................ 66 3.5.1 Missing Data Analysis ................................................................................. 66 3.5.2 Assessment of Team Properties and Measurement Model ......................... 67 3.5.3 Multilevel SEM Mediation .......................................................................... 68 3.6 Results .............................................................................................................. 68 3.6.1 Descriptives ................................................................................................. 68 3.6.2 Multilevel Analysis ..................................................................................... 69 3.6.3 Test of Hypotheses ...................................................................................... 73 3.6.4 Additional Exploratory Analysis ................................................................. 78 3.7 Discussion ......................................................................................................... 78 Table of Contents 3.7.1 3.7.2 3.7.3 3.7.4 4 III Summary and Theoretical Implications ...................................................... 78 Practical Implications .................................................................................. 80 Limitations and Future Research ................................................................. 80 Conclusion ................................................................................................... 81 Are High-Performance Work Systems Always Beneficial? The Limiting Interaction with Employees’ Network Building ........................ 83 4.1 Abstract ............................................................................................................. 83 4.2 Introduction ...................................................................................................... 84 4.3 Theory and Hypotheses Development.............................................................. 86 4.3.1 Why Are High-Performance Work Systems Effective? ............................. 86 4.3.2 Employees’ Network Building Initiative and Organizational-Level Absenteeism ................................................................................................ 88 4.3.3 The Interaction of High-Performance Work Systems and Employees’ Network Building Initiative......................................................................... 90 4.4 Method Section ................................................................................................. 92 4.4.1 Sample ......................................................................................................... 92 4.4.2 Measures ...................................................................................................... 93 4.5 Results .............................................................................................................. 96 4.5.1 Hypotheses Testing ..................................................................................... 96 4.5.2 Robustness Check ........................................................................................ 98 4.6 Discussion ......................................................................................................... 99 4.6.1 Theoretical Contribution ............................................................................. 99 4.6.2 Practical Contribution ................................................................................ 102 4.6.3 Limitations ................................................................................................. 103 4.6.4 Conclusion ................................................................................................. 103 5 Overall Discussion and Conclusion ................................................................... 105 5.1 Abstract ........................................................................................................... 105 5.2 5.3 Summary......................................................................................................... 106 Theoretical Integration of Most Important Research Findings ...................... 109 Overall Limitations and Directions for Future Research ............................... 112 Main Practical Implications ............................................................................ 114 Conclusion ...................................................................................................... 116 5.4 5.5 5.6 Appendix ..................................................................................................................... 117 References ................................................................................................................... 119 Curriculum Vitae ........................................................................................................ 151 IV List of Figures Figure 1-1 Overview of Chapter Structure ................................................................. 25 Figure 2-1 Moderated Mediation Structural Equation Model .................................... 45 Figure 2-2 Interaction between Team Productive Energy and Team Chronic Job Demand Overload on Team Innovative Performance ............................... 47 Figure 3-1 Multilevel SEM Model with Decomposed Between and Within Effects . 74 Figure 3-2 Interaction between Transformational Leadership and Age Diversity on Team Boundary-Spanning Activities ........................................................ 78 Figure 3-3 Interaction between Transformational Leadership and Educational Diversity on Team Boundary-Spanning Activities ................................... 79 Figure 4-1 Interaction between High-Performance Work Systems and Employees’ Network Building Initiative .................................................................... 101 Figure 6-1 Multilevel Confirmatory Factor Analysis for Transformational .................. Leadership ............................................................................................... 120 V List of Tables Table 1-1 Literatures and Constructs related to the Human Energy Concept ........... 19 Table 2-1 Means, Standard Deviations, and Zero Order Correlationsa ..................... 42 Table 2-2 Overall Structural Equation Model Fit Comparison ................................. 44 Table 2-3 Conditional Indirect Effects via Team Productive Energy predicting Team Innovative Performance ............................................................................ 48 Table 3-1 Means, Standard Deviations, and Zero Order Correlations ...................... 72 Table 3-2 Overall Multi-Level SEM Model Fit Comparison .................................... 73 Table 3-3 OLS Regression Results for Simple Moderation ...................................... 76 Table 3-4 Conditional Indirect Effects via Team Boundary-Spanning Activities predicting Team Productive Energy.......................................................... 79 Table 4-1 Means, Standard Deviations, and Correlations among Study Variables .. 98 Table 4-2 Results of Hierarchical Regression Analysis .......................................... 100 VI List of Abbreviations AIC Akaike information criterion AOM Academy of Management β beta (standardized regression/path coefficient) B unstandardized regression coefficient BIC Bayesian information criterion CEO chief executive officer CFA confirmatory factor analysis CFI comparative fit index CI confidence interval COR conservation of resources ∆ delta (difference) df degrees of freedom DGPs Deutsche Gesellschaft für Psychologie (German Psychological Association) d.h. das heisst EAWOP European Association of Work and Organizational Psychology Ed./Eds. editor/editors e.g. example gratia/for example et al. et alii F f-test value Γ gamma (standardized path coefficient) GNP gross national product GST general systems theory List of Abbreviations VII H Hypothesis HPWS high-performance work systems HR human resources HRM human resource management ICC intraclass correlation coefficient i.e. id est/that is IFI incremental fit index IPO input-process-output JD-R job demands-resources Λ lambda (factor loading) M mean MCFA multilevel confirmatory factor analysis MSEM multilevel structural equation modeling MAR missing at random MCAR missing completely at random MNAR missing not at random N/n number of observations Ns not significant OECD Organisation for Economic Co-operation and Development P level of significance p. Page POS positive organizational scholarship R2 squared multiple correlation coefficient R&D research and development RMSEA root mean square error of approximation VIII List of Abbreviations rwg index of interrater agreement SE standard error SD standard deviation SEM structural equation modeling SRMR standardized root mean square residuals TLI Tucker-Lewis index TFL transformational leadership u.a. unter anderem χ2 chi square value 1 Abstract English. The positive organizational scholarship (POS) perspective focuses on capability-enhancing and life-giving dynamics in organizations. It complements the traditional problem-focused view of organizations by centering on enabling human conditions and examining how organizations may unlock the hidden potential of their employees. However, past POS research has primarily studied positive dynamics at the individual level of analysis and frequently did not take into account the specific organizational context of these dynamics. Furthermore, most POS literature that has studied positive phenomena within an organizational context has either been conceptual in scope or relied on qualitative research methods. To complement this prior research, this dissertation examines within three quantitative field studies how positive appetitive social interactions (i.e., interactions with desired consequences from the perspective of the involved individuals) at multiple organizational levels influence performance-relevant outcomes. In Study 1, we examine whether and how team boundary-buffering activities help teams increase their innovative performance using a sample of 89 research and development (R&D) teams. Team boundary-buffering activities are a specific type of social interaction directed toward disengaging from the external team environment and managing external demands. In Study 2, we investigate, using a sample of 121 R&D teams, whether and how transformational leadership increases teams’ sense of productive energy by enabling team boundary-spanning activities. These boundary-spanning activities comprise team actions of engaging with the external team environment in order to gain important resources and support. In Study 3, we explore, with a sample of 161 organizations, whether the interplay between high-performance work systems ([HPWSs], a bundle of HR practices that amongst other include internal participatory mechanisms, cross-functional and cross-trained teams, and high levels of training) and employees’ network building initiative may negatively affect organizational-level absenteeism, although both aspects by themselves have positive effects. This dissertation helps explaining how positive social interactions at multiple organizational levels (team boundary-buffering activities, team boundary-spanning activities, and employees’ network building initiative) facilitate human welfare in organizations and simultaneously contribute to organizations’ competitive advantage by reducing absenteeism, sustaining productive energy, and increasing innovative performance. 2 Abstract Deutsch. Die Positive Organizational Scholarship (POS) Perspektive beschäftigt sich mit ermöglichenden und lebensbejahenden Dynamiken in Organisationen. Diese Perspektive ergänzt die herkömmliche problemzentrierte Sichtweise auf Organisationen, indem sie danach fragt, wie Organisationen das versteckte Potential ihrer Mitarbeiter ausschöpfen können. Allerdings hat die bisherige POS Forschung vornehmlich positive Dynamiken auf der individuellen Ebene untersucht und dabei mitunter den organisationalen Rahmen ausser Acht gelassen. Der überwiegende Teil der bisherigen POS Literatur, der sich mit genuin organisationalen Phänomenen beschäftigt, ist entweder konzeptueller Natur oder gründet sich auf die Anwendung qualitativer Forschungsdesigns. Um diese Forschung zu ergänzen, untersucht diese Dissertation in drei quantitativen Feldstudien, ob und wie positive soziale Interaktionen (d.h. Interaktionen, deren Konsequenzen von den beteiligten Individuen als positiv erlebt werden) auf verschiedenen organisationalen Ebenen leistungsrelevante Prozesse beeinflussen. Studie 1 untersucht anhand einer Stichprobe von 89 Forschungs- und Entwicklungsteams, ob und wie Team Boundary-Buffering Aktivitäten helfen können, die innovative Leistung von Teams zu verbessern. Team Boundary-Buffering Aktivitäten stellen einen bestimmten Typus von Team-Interaktionen dar, die darauf gerichtet sind, störende Einflüsse aus der externen Teamumwelt abzupuffern. Studie 2 erforscht anhand einer Stichprobe von 121 Forschungs- und Entwicklungsteams, ob und wie Transformationale Führung die produktive Energie in Teams dadurch erhöht, dass diese Art der Führung Team Boundary-Spanning Aktivitäten ermöglicht. Team Boundary-Spanning Aktivitäten sind darauf gerichtet, wichtige Ressourcen und soziale Unterstützung im Austausch mit der externen Teamumwelt zu generieren. Studie 3 untersucht anhand einer Stichprobe von 161 Organisationen, ob sich die grundsätzlich positiven Effekte von High-Performance Work Systems ([HPWSs], d. h. ein Bündel von Human Ressource Praktiken, das u.a. interne Partizipationsmöglichkeiten, funktionsübergreifende Teams, und ein hohes Mass an Training beinhaltet) und die individuelle Initiative einzelner Mitarbeitender zur Bildung von sozialen Netzwerken, gegenseitig aufheben. Die vorliegende Dissertation hilft zu verstehen, dass und wie verschiedene positive soziale Interaktionen auf unterschiedlichen organisationalen Ebenen (Team Boundary-Buffering und Team Boundary-Spanning Aktivitäten und die Initiative einzelner Mitarbeitender, soziale Netzwerke zu bilden) zum menschlichen Wohlergehen und gleichzeitig zu einem Wettbewerbsvorteil durch reduzierten Absentismus, erhöhte produktive Energie, und gesteigerte Innovationsleistung beitragen. 3 1 Introduction 1.1 Abstract This chapter familiarizes the reader with the positive organizational scholarship (POS) perspective. Then, drawing from this POS perspective, this chapter develops the central motivation and research focus of this dissertation, namely how organizations can be economically productive and simultaneously provide space for positive social interactions among their organizational members. Building on this research focus, this chapter presents the focal concepts of this dissertation – i.e., team boundary activities, productive energy, and employees’ network building initiative – and develops three distinct research questions. These research questions will be refined, studied, and discussed in the following parts of this dissertation. 4 Introduction “If we don’t make money, no amount of virtue will do our firm any good. Wall Street will ignore us, and we will soon be out of business. We must have bottom line performance for virtuousness in our firm to be taken seriously.” — Jeffrey Schwartz, CEO, Timberland (2002) 1.2 The Positive Organizational Scholarship Perspective 1.2.1 Core Ideas of the Positive Organizational Scholarship Perspective Positive organizational scholarship (POS) is an emergent field of organizational research that has received growing attention from researchers and practitioners in the last decade (Dutton, Glynn, & Spreitzer, 2006). The POS perspective focuses on investigation of positive outcomes, processes, and attributes of organizations and affiliated individuals (Cameron, Dutton, & Quinn, 2003). In particular, POS researchers study lifegiving, capability-enhancing, and capacity-creating dynamics in organizations (Dutton et al., 2006). These dynamics might be characterized by aspects such as flourishing, thriving, being virtuous, or being highly energized (Cameron et al., 2003; Dutton et al., 2006; Vogel & Bruch, 2012). Eventually, these dynamics are rooted in the ancient Greek concept of excellence (Greek: ἀρετή [Cameron, Bright, & Caza, 2004]). To the ancient Greeks, excellence meant that individuals possess the essential life skills to achieve their highest human potential (Cawley III, Martin, & Johnson, 2000). The POS lens does not provide a single theory or framework but draws from a wide range of organizational theories (Dutton et al., 2006). However, the POS perspective builds on three conceptual pillars that are related to its title: First, POS is associated with the positive, because it focuses on life-giving, elevating, and generative states, experiences, and dynamics (Dutton et al., 2006). Note that the focus on positivity does not mean that POS denies negative aspects within organizations. However, mainstream organizational science predominantly emphasizes problematic aspects of organizations (Luthans & Youssef, 2007). Hence, POS aims at shifting the focus from disabling to enabling conditions (Cameron et al., 2003). Second, POS is organizational, because it focuses on organizational processes, methods, capabilities, and structures that facilitate those positive dynamics (Cameron et al., 2003). Last but not least, POS draws upon scholarship, because it affirms theoretically informed intentions that are supported by Introduction 5 empirical data and analysis and offer organizational implications for theory, practice, and teaching (Dutton et al., 2006). However, POS does not come as a value-free perspective. It explicitly rests on the assumption that enabling human conditions in organizations may unravel the hidden potential of people and increase their possibilities, which ultimately improves their own welfare as well as the welfare of organizations (Dutton et al., 2006). An example might explain how POS differs from traditional perspectives in the organizational sciences. The opening chapter of the first edited book on POS starts with a thought experiment (Cameron et al., 2003). First, Cameron and colleagues (2003) ask the reader to think about a world in which most organizations are characterized by “greed, selfishness, manipulation, secrecy, and single-minded focus on winning” (p. 3). Drawing upon this example, the authors suggest that mainstream organizational sciences primarily examine these kinds of organizations and are consequently concerned with theoretical questions referring to “problem-solving, reciprocity, justice, managing uncertainty, overcoming resistance, achieving profitability, and competing successfully against each other” (p.3). In turn, Cameron and colleagues (2003) ask the reader to imagine a world in which organizations are characterized by “appreciation, collaboration, virtuousness, vitality, and meaningfulness” (p. 3). They point to the idea that members of such an organization might be characterized by trustworthiness and resilience and energized by relationships based on “compassion, loyalty, honesty, respect, and forgiveness (p.3)”. Members of such an organization might experience their social interactions as life-building rather than life-depleting. Cameron, Dutton, and Quinn (2003) conclude that most prior organizational research has adopted assumptions and concepts regarding organizations that are in line with the first view. However, limited research has yet elaborated upon theories and concepts that are inspired by the second view of organizations. Following the previous POS research, this dissertation asserts that traditional organizational research tends to emphasize a problem-oriented view of organizations (Roberts, 2006). This problem-oriented view leads to a tendency to predominantly focus on organizational deficits and aspects that are sub-optimal instead of examining how and why positive dynamics evolve in organizations. Within a succinct literature review, Caza and Caza (2008) found, for example, that five of the six most-cited articles in two of the most prestigious journals in the management field (Academy of Management Journal and Administrative Science Quarterly) in 1979, 1989, and 1999 focused on organizational deficits rather than their potentiality. However, the deficit model of organizations is not limited to organizational scholars. In a longitudinal study 6 Introduction of language in the business press, Walsh (1999) showed that the use of words with negative connotations increased almost fourfold within a period of 17 years. In contrast, the use of positive-biased language maintained its rarity within this period of time. However, research from a POS perspective does not deny the helpfulness of the problem-oriented view of organizations (Roberts, 2006). Thus, in line with other scholars (Luthans & Youssef, 2007), this dissertation regards the POS perspective as a complement to the dominant problem-oriented view of organizations rather than as a substitute or replacement. Although POS is a relatively new perspective in the organizational sciences, the accentuation of positive dynamics is not unique to this point of view (Cameron et al., 2003). Most notably, the core ideas of the POS perspective emerged within the positive psychology movement. The roots of the positive psychology movement advanced partly in parallel but a few years earlier than the POS perspective (Dutton et al., 2006). The positive psychology movement was initiated in 1998 by the experimental psychologist Martin Seligman, who was at that time president of the American Psychological Association. Seligman made the case that, since World War II, mainstream psychology had almost exclusively focused on dysfunctional behavior and human pathology (Cameron et al., 2003). Indeed, clinical psychologists had made considerable progress in designing interventions that help individuals to overcome their hardships; however, Seligman criticized that, due to psychology’s focus on human pathology, this field developed a negative bias and overlooked the positive side of human potentiality (Cameron et al., 2003). In contrast, positive psychology strives to generate knowledge in the following areas of study: positive experiences (e.g., happiness and joy), positive individual traits (e.g., strengths and virtues), and positive institutions (e.g., communities and organizations). However, a review of the positive psychology literature revealed that this third research pillar, positive institutions, has been studied to a very limited degree (Gable & Haidt, 2005; Hackman, 2009). Accordingly, POS and its micro-level “sister”, positive organizational behavior, broaden the perspective of positive psychology by specifically focusing on the organizational context in which positive dynamics can be unleashed (Dutton et al., 2006; Luthans & Youssef, 2007). 1.2.2 Theoretical Relevance The following section provides an overview of how and why this dissertation is theoretically relevant for the literature of POS. Critical reviews have emphasized that research on POS and positive behavior in organizations has made great progress in stud- Introduction 7 ying positive traits and state-like capacities (Hackman, 2009; Luthans & Youssef, 2007). However, Hackman (2009) observes that organizational scholars tend to follow their colleagues from the positive psychology movement in primarily studying intrapersonal phenomena (such as hope, resilience, optimism, and self-efficacy) and not genuine organizational phenomena. Hence, the present dissertation focuses on relational practices that genuinely unfold within an organizational context (i.e., team boundary activities and intraorganizational social network initiative). Team boundary activities are defined as actions that team members carry out within an organization to interact with stakeholders in their external environment (Ancona & Caldwell, 1992b; Faraj & Yan, 2009). Employees’ network building initiative refers to employees’ use of their informal social networks within an organization (Thompson, 2005). Both types of relational practices − team boundary activities and employees’ network building initiative − are not feasible without an organizational environment. Hence, both concepts are by definition closely related to the organizational context (Johns, 2006). Furthermore, reviews of the POS literature suggest that most organizational scholars tend to analyze positive behaviors at the individual level (Cameron et al., 2003; Hackman, 2009; Wright & Quick, 2009). For instance, prior research has studied the positive dynamics of individual employees’ flow (Quinn, 2005), high-quality relationships (Carmeli & Gittell, 2009b), and thriving (Porath, Spreitzer, Gibson, & Garnett, 2012). However, research on POS has only begun to study variables at the level of groups and organizations (see Owens, Johnson, & Mitchell [2013]; West, Patera, & Carsten [2009] for exceptions). To approach this gap, the present dissertation examines concepts at the levels of teams and organizations. In particular, Studies 1 and 2 observe positive team dynamics related to team boundary activities, whereas Study 3 explores the positive effect of employees’ network building initiative at the organizational level. Hackman (2009) suggests that, at its best, the field of organizational behavior explores cross-level interactions among individuals’ relational practices and their broader organizational context. Accordingly, in Study 3, we specifically examine the cross-level interaction between individual employees’ network building initiative (relational practice of individuals) and high-performance work systems (organizational context). Moreover, Hackman’s (2009) reading of the POS literature raised questions regarding the empirical validity of several constructs of that field. Conversely, to date a considerable number of individual-level POS constructs have been rigorously validat- 8 Introduction ed, such as authenticity (Walumbwa, Avolio, Gardner, Wernsing, & Peterson, 2008), thriving (Porath et al., 2012), and expressed humility (Owens et al., 2013). However, Cameron and colleagues (2003) point to the fact that validated POS scales at higher levels, such as the team and organizational level, are particularly rare. One of the few exceptions that we are aware of is a unit-level measure of a concept called productive energy (Cole, Bruch, & Vogel, 2012). Productive energy is defined as “shared experience and demonstration of positive affect, cognitive arousal, and agentic behavior among unit members in their joint pursuit of organizationally salient objectives” (p. 447). Hence, we contribute to the POS literature by further examining the relationships between the productive energy construct and its positive dynamics in Studies 1 and 2. Also, the bulk of the POS research that genuinely focuses on organizational phenomena has either been conceptual (e.g., Dutton, Roberts, & Bednar, 2010; Heaphy & Dutton, 2008; Quinn & Dutton, 2005; Roberts & Dutton, 2009; Spreitzer, Sutcliffe, Dutton, Sonenshein, & Grant, 2005) or guided by qualitative research (Quinn & Worline, 2008; Sonenshein, in press; Sonenshein, Dutton, Spreitzer, Sutcliffe, & Grant, 2013). Given that established measurement instruments for the focal constructs of this dissertation exist (i.e., team boundary activities [Faraj & Yan, 2009], employees’ network building initiative [Thompson, 2005], and productive energy [Cole et al., 2012]) and given that the corresponding literature is relatively mature (Edmondson & McManus, 2007), this dissertation uses quantitative research methods in the three empirical studies included in this dissertation. However, that is not to say that I advocate any metaphysics of positivism, nor does it imply that I favor quantitative over qualitative research methods. In doing so, I simply aspire to extend the prior focus on qualitative research methods. Last but not least, POS research has been criticized for being ahistorical (Hackman, 2009). Hackman (2009) argues that POS researchers tend to cite relatively recent literature from their own perspective and ignore literature from past decades. To help integrate the POS literature with past organizational behavior research, this dissertation strives to link ideas from the POS perspective, for example on human energy in organizations (Quinn, Spreitzer, & Lam, 2012), with established arguments from the literature on team boundary activities (Ancona & Caldwell, 1992b; Faraj & Yan, 2009) and intraorganizational social networks (Tsai & Ghoshal, 1998). Introduction 9 1.2.3 Practical Relevance Besides theoretically contributing to the literature of POS, this dissertation offers three practical contributions to the field of management. First, it adds to the dialogue between management scholars and practitioners. In a widely cited article, Ghoshal (2005) describes this dialogue as drawing upon the concept of double hermeneutics, meaning a double-sided relationship (Giddens, 1987). In one direction, management scholars interpret the reality in their field, which ultimately shapes the way they craft theories. In the other direction, practitioners interpret these theories in such a way that shapes their practice in the field (Giddens, 1987). For example, a theory that assumes that managers act opportunistically and in turn draws its conclusions based on this belief will likely reinforce opportunistic behavior among managers (Ghoshal & Moran, 1996). Furthermore, a theory that draws implications for corporate governance on the presumption that managers are not trustworthy may also influence managers to act less credibly (Osterloh & Frey, 2003). Overall, Ghoshal (2005) argues that several of the worst recent management excesses originated in ideas developed by management scholars in recent decades. Inspired by examples of managerial misconduct at the beginning of this century, Ghoshal (2005) argues that this problem was aggravated by management scholars who uncritically carried over their model of explanation from the natural sciences. The classical model of the natural sciences draws upon a causal mode of explanation while neglecting intentionality and human agency as valid sources of scientific reasoning (Ghoshal, 2005). In order to adopt this scientific mode of explanation, many scholars in the field of management have precluded intentionality and human agency from the agenda of their theory building efforts (Ghoshal, 2005). Accordingly, for many scholars, moral reflections and ethical reasoning became an illegitimate aspect of scientific inquiry (Ghoshal, 2005). Ghoshal (2005) concludes that the idea of “value-free” scholarship has been particularly harmful, because it actively discharges practitioners from any sense of moral obligation in their everyday decision-making. In line with Ghoshal’s (2005) argument, this dissertation incorporates its value assumptions as an explicit part of the research agenda. Particularly, this dissertation offers a more positive view of the feasibility of intentionality and the human agency of managers’ behavior. Furthermore, this dissertation reinforces the idea that certain states of mind (e.g., appreciation, collaboration, virtuousness) are more desirable than others (e.g., greed, selfishness, manipulation) and aims at facilitating the former while discouraging the latter. 10 Introduction Second, POS offers a fresh lens through which to view the organizational sciences by drawing attention to a broader domain of outcomes that have not been sufficiently studied (Cameron et al., 2003). A review of outcome measures of studies published in the Academy of Management Journal between 1958 and 2000 revealed that, by far, most papers reported solely on economic performance measures and tended to overlook measures of social welfare (Walsh, Weber, & Margolis, 2003). In their study, economic performance incorporated measures of efficiency, productivity, and accounting- and market-related indices of value creation. Social welfare included measures of health, satisfaction, justice, social responsibility, and environmental stewardship (Walsh et al., 2003). Research from a POS perspective emphasizes that economic performance is not an end in itself (Roberts, 2006). On the contrary, Roberts (2006) argues that organizations should not strive for economic performance by any means. One of the generative POS constructs that has been studied recently is the emergent state of productive energy, which is also examined in this dissertation. Past research shows that productive energy is a concept that enhances both economic performance and social welfare (Cole et al., 2012; Raes, Bruch, & De Jong, 2013). Third, this dissertation contributes to the conversation on organizational sustainability. Pfeffer (2010) suggested that the previous debate on sustainability has primarily focused on economic and environmental arguments but disregarded the human aspect of this topic. Nevertheless, organizational members have experienced increased levels of psychological distress and disorders (e.g., burnout) within the last decades (OECD, 2012). For example, almost one-third of all employees in the European Union regularly experience psychological distress in their workplaces (Steinmann, 2005). As a consequence, the follow-up costs of stress-related diseases add up to 3-4% of the EU countries’ overall gross national product (GNP, [Steinmann, 2005]). Similarly, in Switzerland, the resulting costs of those disorders account for approximately 1.2% of GNP (Ramaciotti & Perriard, 2003). This number corresponds to expenses of more than 4 billion CHF (Ramaciotti & Perriard, 2003). In general, until very recently the discussion on psychological strain focused on lower-ranked employees, because they usually possess fewer psychological resources (e.g., less decision-making autonomy [Stansfeld, Fuhrer, Head, Ferrie, & Shipley, 1997]). However, recently, the public eye has witnessed several incidents in which top managers voluntarily quit their jobs for reasons related to psychological distress. For instance, in 2011, Hartmut Ostrowski, the former CEO of the media group Bertelsmann, resigned because he doubted he could preside over the firm for another five years while also retaining his full psychological integrity (von Terpitz & Siebenhaar, Introduction 11 2011). Similarly, in 2011, António Horta-Osório, the former CEO of the banking group Lloyds, after only eight months on the job, took a two-month absence after receiving a diagnosis of extreme job fatigue (Kwoh, 2013). However, there might be reasons why, especially to date, it remains difficult for organizations to sustain the human energy of their workforces. First, driven by global market forces and accelerated innovation cycles, organizations face an augmented need for organizational adaption (Bruch & Menges, 2010). As a result, organizational members are confronted with various threats, including higher job demands (e.g., greater workload), greater competition, and increased risk of being laid off (Fritz, Lam, & Spreitzer, 2011). There might be two reasons why providing positive social interactions and human energy in this situation may play a decisive role for organizations. First, drawing on the logic of economic rationality (which will be discussed further in the next chapter), sustaining organizational members’ human energy may offer organizations a competitive advantage (Fritz et al., 2011; Pfeffer, 1994, 2010). Second, referring to the logic of the POS perspective, providing organizational members with a generative organizational context could prove an important value in its own right. 1.3 Motivation and Research Focus 1.3.1 Can Organizations Be Economically Productive and Simultaneously Provide Space for Positive Social Interactions? In the following section, this dissertation offers an overview of the motivation and focus of the research included in the dissertation. Drawing from this motivation and focus, this dissertation will advance three specific research questions at multiple organizational levels. The POS perspective builds on different macro-level lenses to develop an understanding of life-giving, capability-enhancing, and capacity-creating dynamics in organizations. One of them is the resource-based view of the firm (Dutton, Glynn, & Spreitzer, 2006). This view aims to explain why certain firms achieve an aboveaverage return on investment, whereas others do not. As a basic premise, this lens suggests that, in order to generate a competitive advantage, firms have to develop a bundle of valuable resources (Wernerfelt, 1984). Resources are determined to be valuable when they are rare and neither perfectly imitable nor substitutable without huge expense (Barney, 1991). Furthermore, these resources must allow an organization to 12 Introduction generate a value-creating strategy that will not be adopted by any present or potential competitor (Barney, 1991). Past research proposes that several intangible assets, such as organizational culture or human resource systems, may function as a valuable resource for organizations (Barney, 1986; Lado & Wilson, 1994). Furthermore, research from a POS perspective suggests that employees’ positive work-related identification can create a competitive advantage (Dutton, Roberts, & Bednar, 2010). The resource-based view of the firm complements the traditional neoclassical theory, which builds on a market-based “outside-in” perspective by applying an “inside-out” view of organizations. The resource-based view emphasizes the role of organizations’ valuable resources as a foundation for above-average returns on investment, whereas the neoclassical market-based view focuses on achieving a superior market position. In principle, the neoclassical theory and its later derivatives, such as transaction cost theory and principal agent theory, draw from the assumption that organizations evolve as a consequence of market failure (Nahapiet & Ghoshal, 1998; Williamson, 1975). By definition, these theories conceptualize social interactions in organizations as motivated by economic interest and opportunism (Coase, 1937; Jensen & Meckling, 1976). On the contrary, the resource-based view of the firm is more flexible regarding its behavioral assumptions (Amit & Schoemaker, 1993). One stream of literature stemming from the resource-based view particularly focuses on knowledge-based value creation (Grant, 1996). This stream of literature stresses innovation capability as a valuable resource for organizations (Argote, McEvily, & Reagans, 2003; Osterloh & Frey, 2000). However, to successfully innovate, organizational members have to put aside their self-interest in order to coordinate their joint efforts toward fulfillment of the higher goals of the organization (Lindenberg & Foss, 2011). Whereas recent derivatives of the neoclassical theory refer to the nature of organizations as a nexus of contracts (e.g., Jensen & Meckling, 1976), literature stemming from this resource-based view of the firm describe organizations as social communities (Kogut & Zander, 1992). For example, Kogut and Zander suggest that “organizations are social communities in which individual and social expertise is transformed into economically useful products and services by the application of a set of higher-order organizing principles. Firms exist because they provide a social community of voluntaristic action structured by organizing principles that are not reducible to individuals” (1992, p. 384). Accordingly, past social capital literature has proposed that social interactions may provide a valuable resource for organizations (Leana & Van Buren III, 1999; Introduction 13 Nahapiet & Ghoshal, 1998; Tsai, 2001). However, prior research has scarcely examined specifically positive social interactions (e.g., Baker, Cross, & Wooten, 2003). Positive social interactions are characterized “by the pursuit of rewarding and desired outcomes” of the involved individuals (Heaphy & Dutton, 2008, p. 139). This dissertation focuses on positive social interactions, because POS and positive psychology scholars have argued that the mechanisms through which social interactions are experienced as beneficial are not simply the opposite of those through which social interactions are felt as distressing and harmful (Heaphy & Dutton, 2008; Reis & Gable, 2002). Past research defines positive social interactions as appetitive, which means that their consequences are desired and welcome from the perspective of the involved individuals (Heaphy & Dutton, 2008; Reis & Gable, 2002). On the contrary, negative social interactions are regarded as aversive, which means that individuals experience them as punishing and harmful (Heaphy & Dutton, 2008; Reis & Gable, 2002). For example, positive social interactions may include experiences of growth, respect, and mutuality (Miller & Stiver, 1997), whereas negative social interactions might include feelings of distrust and exclusion (Cacioppo et al., 2002; Fleischmann, Spitzberg, Andersen, & Roesch, 2005). Furthermore, prior conceptual work distinguishes between two fundamental types of social interactions: connections and relationships. A connection supposes that two individuals have socially interacted with each other and are mutually aware of it (Dutton & Heaphy, 2003). As Heaphy and Dutton (2008) state, connections differ in length, varying from one moment to many, and may be recurring. When these connections recur, they are referred to as relationships (Heaphy & Dutton, 2008). Hence, in a nutshell, connections are the micro-unit of relationships (Heaphy & Dutton, 2008). Past research has demonstrated that positive social interactions have many beneficial physiological consequences for individuals’ health, such as lowering one’s heart rate and blood pressure, strengthening the immune response, and inducing a healthier pattern of the stress hormone cortisol (Heaphy & Dutton, 2008). However, aside from these beneficial individual-level consequences, it is not fully understood whether and how positive social interactions may also prove a valuable resource for organizations. Research motivation: Can organizations constitute social communities that encourage positive social interactions, with beneficial consequences for the involved individuals, while at the same time being economically productive? 14 Introduction 1.3.2 Analysis of Positive Social Interactions at Multiple Organizational Levels In addition to evidence from the medical literature showing many favorable physiological consequences of positive social interactions at the individual level, a growing body of POS literature examines a specific type of positive social interaction called high-quality relationships. Among other aspects, these relationships are characterized by positive regard, mutuality, and feelings of vitality (Stephens, Heaphy, & Dutton, 2012). Most studies in this stream of research show that high-quality relationships have a positive effect on innovation. For example, Vinarski-Peretz, Binyamin, and Carmeli (2011) found that high-quality relationships positively influence employees’ engagement in innovative behaviors. Accordingly, Carmeli and Spreitzer (2009) showed that another aspect of high-quality relationships, connectivity, increased employees’ thriving, which ultimately supported their innovative performance. Finally, Carmeli and Gittell (2009) found that high-quality relationships increase organizational members’ psychological safety, which in turn facilitates their ability to learn from failure. Furthermore, previous POS studies have demonstrated that positive social interactions do not emerge by themselves or simply by refraining from harmful practices. Research particularly points to the important role of supervisors in establishing positive work relationships. For example, Atwater and Carmeli (2009) showed that, when employees perceive the relationship with their supervisor as positive, they feel an increased sense of energy, which ultimately produces higher levels of creative work involvement. Carmeli, Atwater, and Levi (2011) demonstrated that employees’ relational identification with their supervisors increased their knowledge exchange and their identification with the organization. Furthermore, Carmeli and Spreitzer (2009) found that employees’ trust among each other positively affected their connectivity. However, the vast majority of studies on high-quality relationships have applied to the individual level of analysis. Exceptions include two studies situated at the team level. Brueller and Carmeli (2011) showed that team members’ high-quality relationships with their team leaders increase teams’ psychological safety climate, whereas team members’ high-quality relationships with external stakeholders increase team learning. Stephens, Heaphy, Carmeli, Spreitzer, and Dutton (2013) found that a particular facet of high-quality relationships called emotional carrying capacity (i.e., the capacity to express both positive and negative emotions in a constructive way) increased the resilience of members of top management teams. Nevertheless, this line of POS Introduction 15 research has been constrained by the fact that a validated scale of high-quality relationships has yet to be published. In this dissertation, I aim at extending prior POS research by examining different types of positive social interactions at multiple organizational levels. In doing so, I draw upon a multilevel perspective of organizations. At its base, the multilevel perspective builds on ideas of the general systems theory (GST, [Boulding, 1956; von Bertalanffy 1972]). The basic idea of GST is traced back to the ancient Aristotelian principle that the whole is more than the sum of its parts (Kozlowski & Klein, 2000). This principle stands in stark contrast to the reductionist, respective atomistic strategies of explanation, such as in economics and parts of the natural sciences (Kozlowski & Klein, 2000). The central purpose of GST is to establish principles that generalize across phenomena, disciplines, and levels of explanation. In particular, this dissertation refers to the so-called meso paradigm of organizational behavior (House, Rousseau, & Thomashunt, 1995). This paradigm is characterized by careful consideration for the context of organizational behavior (House, et al., 1995). Traditionally, organizational scholars have utilized either the macro perspective (often referred to as organizational theory) or the micro perspective (often referred to as organizational behavior) to explain organizational phenomena (Kozlowski & Klein, 2000). However, the former tends to devote little attention to the processes of human agency, whereas the latter tends to forget the organizational context of behavior (Heath & Sitkin, 2001; House, et al., 1995; Johns, 2006). The term context originates from Latin and means “to weave together.” To take something out of its context is to remove it from its relationships to other parts, such as the larger whole or the setting in which it operates (House, et al., 1995). However, given the lack of meso-level research on positive social interactions, this dissertation aims at linking established concepts of social interaction (i.e., team boundary activities and employees’ network building initiative) at multiple levels with the emergent state of productive energy and performance-relevant outcomes. Overall research focus: How do different types of positive social interactions at multiple organizational levels influence performance-related outcomes? 16 Introduction 1.3.3 Team Boundary Activities In the following section, this dissertation will develop three specific research questions at multiple organizational levels, drawing upon the literatures of team boundary activities, human energy in organizations, and intraorganizational social networks. Before exploring boundary activities at the level of teams, two streams of macrolevel research are to be considered that sought to explain how organizations interact across their organizational boundaries with their external environment. The first stream of research explains boundary activities using an open systems perspective (Katz & Kahn, 1966; Scott, 1992). However, this literature applies this open systems view rather metaphorically, referring to structural and materialistic components of organizations rather than behaviors of humans (Klein, Tosi, & Cannella, 1999). For example, Scott (1992) proposes that organizations are technical systems that transform inputs into outputs. Drawing upon this argument, he suggests that organizations seek to buffer their core technologies from environmental influences through a variety of strategies. For instance, they reduce the fluctuation of their inputs, stockpile raw materials, or forecast conditions that determine supply and demand in the market (Scott, 1992). Furthermore, Katz and Kahn (1966) state that organizations, viewed as open systems, need to steadily import energy and information from their external environment in order to maintain their functioning. However, when referring to energy, Katz and Kahn (1966) also use the term metaphorically in the sense of material inputs (such as raw materials) and not specifically in the sense of human activities. The second macro-level stream of research examining boundary activities at the levels of organizations is the organizational design perspective (Galbraith, 1977). This perspective emphasizes the importance of processing technical information between different units of research and development (R&D) organizations (Galbraith, 1977; Tushman & Nadler, 1978). Primarily, this stream of research has focused on how individuals span the boundaries of their R&D laboratory, respective departments, and organizations as a whole in order to improve innovative outcomes (Tushman, 1977). For instance, this research described several organizational communication roles (e.g., communication stars, gatekeepers, and liaisons) that improve the organizational innovation process (Tushman, 1977; Tushman & Scanlan, 1981a). Overall, this research shows that there is a positive link between cross-boundary communication and organizational innovation and performance (e.g., Allen, 1984). By exploring boundary activities at the team level, Ancona (1987) was among the first to particularly take into account the external context of teams embedded with- Introduction 17 in organizations. Team boundary activities are defined as team processes directed toward establishing and managing external social linkages with stakeholders in their external environment (Marrone, 2010). In a series of pioneering papers, Ancona (formerly Gladstein) and Caldwell empirically explored the role of these team boundary activities by teams embedded within organizational contexts (Ancona, 1990; Ancona & Caldwell, 1992a; Gladstein, 1984). Before this seminal work, scholars had studied teams primarily in the laboratory setting (Ancona, 1987). In a sample of service teams, Gladstein (1984) showed that not only internal team processes (maintenance and task behaviors) influence team effectiveness but also team boundary activities. Building on this insight, Ancona and Caldwell (1992a) mapped the different types of team boundary activities among research and development (R&D) teams. In general, they found that R&D teams engage in vertical communication in order to meet the expectations of upper management and horizontal communication in order to coordinate work, obtain feedback, and scan the technical and market environment. Furthermore, Ancona (1990) demonstrated that R&D teams were most effective when their supervisors supported team members’ management of social linkages across team boundaries. This research on team boundary activities has traditionally focused on team actions that involve engagement with external environments. Usually, these actions are directed toward importing important resources and support from the external environment. This process is defined as team boundary-spanning activities (Ancona & Caldwell, 1992a). A huge body of research shows that these boundary-spanning activities help teams to increase their innovative performance (Hulsheger, Anderson, & Salgado, 2009). However, past research has scarcely paid attention to the opposite team actions of team boundary-buffering activities. These actions involve disengagement from the environment in order to manage external demands. For example, Faraj and Yan (2009, p. 606) describe team boundary-buffering activities as “formal strategies and procedures and informal codes and norms for deflecting and managing external demands, on team members.” These activities involve monitoring the information and resources that external stakeholders request from the team (Ancona & Caldwell, 1992a). However, prior research has not yet examined whether and how team boundary-buffering activities increase teams’ innovative performance. Research question 1: How do team boundary-buffering activities influence team innovative performance? 18 Introduction 1.3.4 Collective Human Energy in Organizations Human energy is a concept that POS scholars became interested in because it is theorized to reflect life-giving dynamics in organizations (Dutton, 2003; Quinn & Dutton, 2005). Prior conceptual work distinguished between two distinct but related aspects of human energy: physical energy and energetic activation. Physical energy is described as the capacity to do work. Work in turn is defined as the product of the force that is exercised on an object and the distance that it moves (Quinn, Spreitzer, & Lam, 2012). At the level of humans, physical energy manifests in two ways: either as potential energy (which is available but unused and stored chemically within the body) or as kinetic energy, which animates human activities. These human activities are either intentional (such as conscious reflection or purposeful movement) or unintentional (such as breathing or the beating of the heart [Quinn, et al., 2012]). Energetic activation, on the other hand, refers to the subjective component of human energy. It explains the degree to which people experience themselves as invigorated (Quinn, et al., 2012). Physical energy, the somatic component of human energy, and energetic activation, the subjective component of human energy, are two corresponding but separate constructs (Quinn, et al., 2012). In the following section, this dissertation will primarily focus on energetic activation. Several streams of research offer valuable insights to understand the subjective aspects of human energy at different organizational levels. These literatures include the conservation of resources theory, attention restoration theory, ego-depletion theory, broaden and build theory, self-determination theory, and ritual chain theory (Quinn, et al., 2012). Table 1 provides an overview of these literatures and related constructs. Most of these literatures are situated at the individual level of analysis. At the individual level, scholars have drawn from conservation of resources theory to explain how the interplay between job demands and job resources influences individuals’ experience of being energized (Demerouti, Bakker, Nachreiner, & Schaufeli, 2001). Furthermore, researchers have applied ego-depletion theory to illustrate how individuals’ energetic activation and physical energy are depleted through the exercise of selfcontrol (Baumeister, Bratslavsky, Muraven, & Tice, 1998). Additionally, POS scholars have applied self-determination theory to investigate the influence of fulfilling individual psychological needs on the subjective component of individuals’ human energy at work (Spreitzer, Sutcliffe, Dutton, Sonenshein, & Grant, 2005). In sum, this individual-level research teaches us that different kinds of resources, such as job resources (e.g., autonomy, social support, supervisory coaching, performance feedback, and op- Introduction 19 portunities for professional development [Xanthopoulou et al., 2009]) and personal resources (e.g., recovery, self-efficacy, organizational-based self-esteem, and optimism [Sonnentag, Mojza, Demerouti, & Bakker, 2012; Xanthopoulou, Bakker, Demerouti, & Schaufeli, 2009]) play an instrumental role in sustaining individuals’ subjective experience of feeling invigorated. Finally, researchers have established several individual-level constructs, such as work engagement (Schaufeli, Bakker, & Salanova, 2006), thriving (Porath, Spreitzer, Gibson, & Garnett, 2012), vigor (Shraga & Shirom, 2009), and subjective well-being (Diener, 2000) that measure different aspects of the subjective component of human energy. Table 1-1 Literatures and Constructs Related to the Human Energy Concept Levels of Analysis Literatures Constructs Individual - Conservation of resources (Hobfoll, 2011) - Attention restoration (Kaplan, 2001) - Self-determination (Ryan & Deci, 2000) - Energetic activation (Fredrickson, 2001) - Ego depletion (Baumeister, Bratslavsky, Muraven, & Tice, 1998) - Work engagement (Schaufeli, Bakker, & Salanova, 2006) - Vigor (Shraga & Shirom, 2009) - Thriving (Porath et al., 2012) - Subjective well-being (Diener, 2000) Dyadic - Interaction ritual chains (R. Collins, 2004) Collective - Organizational climate (Schneider & Reichers, 1983) - Productive energy (Cole et al., 2012) At the dyadic level, research on human energy has applied ritual chain theory to explain energizing relationships (R. Collins, 2004). Ritual chain theory is a micro-level sociological theory that suggests that human energy emerges within social interactions of individual actors (R. Collins, 1981). Furthermore, this theory posits that macro-level social structures (e.g., organizations, markets, and social trends) are built on, and ultimately created by, energizing social interactions (R. Collins, 1993). Applying social network data, Casciaro and Lobo (2008) found that employees tend to avoid colleagues whom they perceive as de-energizing, even when these colleagues possess 20 Introduction information that they urgently need. At the dyadic level, a validated scale on relational energy has not yet been published. At the collective level, past research has used the construct of productive energy to encompass a sense of collective human energy. Productive energy is defined as “the shared experience and demonstration of positive affect, cognitive arousal, and agentic behavior among unit members in their joint pursuit of organizationally salient objectives” (Cole, Bruch, & Vogel, 2012, p. 447). Theoretically, prior research has embedded the construct of productive energy within the literature of psychological climate (Raes, Bruch, & De Jong, 2013). The construct of productive energy shares several characteristics with other constructs from the organizational behavior literature but is also distinct from these constructs. For example, it shares an emotive aspect with the individual-level concept of work engagement (Schaufeli, Bakker & Salanova, 2006). However, productive energy is grounded in unit members’ collective striving toward goals at a higher level (Cole et al., 2012). Furthermore, in line with the circumplex model of affect (Russell, 1980), productive energy is characterized by high levels of arousal and positive valence similar to affective states, such as enthusiasm, excitement, happiness, or alertness. However, contrary to individual-level affective states, productive energy is defined as a collective-level construct. Furthermore, contrary to traditional work motivation concepts, productive energy is not framed primarily around cognitive processes (e.g., Chen, Kanfer, DeShon, Mathieu, & Kozlowski, 2009) but is instead closely related to motivation, because it encompasses the potentiality of devoting efforts to a joint course of action (Cole et al., 2012). Past research shows that productive energy positively influences several positive outcomes and antecedents. For example, research has found that productive energy at the organizational level is associated with internal measures of organizational effectiveness such as goal and organizational commitment and organizational performance (Cole, et al., 2012). Furthermore, prior studies demonstrated that productive energy at the organizational level is related to negative turnover and increased employee job satisfaction (Raes, et al., 2013). In addition to these consequences, scholars have begun to disentangle antecedents of productive energy. Prior research has found that top management teams’ behavioral integration and organizations’ transformational leadership climate were associated with productive energy at the organizational level (Raes et al., 2013). At the level of teams, Kunze and Bruch (2010) show that transformational leadership buffers the negative effect of age-based faultlines on team productive energy. Introduction 21 As mentioned, prior research has revealed that transformational leadership increases productive energy (Kunze & Bruch, 2010; Walter & Bruch, 2010). The second research question of this dissertation examines how transformational leadership positively influences team productive energy. Specifically, this dissertation proposes that transformational leadership increases productive energy at the team level through the mediation of team boundary-spanning activities. The basic argument is that transformational leaders enable their team members to engage in resource-gaining social interaction across team boundaries which, in turn, increases team productive energy. Research question 2: Do team boundary-spanning activities mediate the positive link between transformational leadership and team productive energy? 1.3.5 Intraorganizational Social Networks The literature on social networks distinguishes between intraorganizational and interorganizational social networks. This dissertation focuses on intraorganizational social networks, because social interactions within an organization may function differently from those within a market environment (Brass, Galaskiewicz, Greve, & Tsai, 2004). In the following discussion, this dissertation will briefly review the literature on social networks at the business-unit level, analyze the literature at the team level, and finally review the literature at the dyadic level. The vast majority of this intraorganizational research examines the consequences, rather than antecedents, of social networks. At the level of business units, Tsai and Ghoshal (1998) showed that units that are more central within an inter-unit resource exchange network tend to produce more product innovations than less central units. Accordingly, Tsai (2001) found that the positive association between a unit’s more central position in the network and its product innovation increases when it has a superior ability to successfully replicate new knowledge (i.e., absorptive capacity). Furthermore, Tsai (2002) demonstrated that social interactions between units have a positive effect on inter-unit knowledge sharing, specifically among units that compete in the same market segments. Moreover, Hansen (1999) found that particularly strong ties (e.g., friendship of specific persons) between organizational units enable the transfer of complex knowledge, whereas weak ties (e.g., mere acquaintance) speed up project execution when less complex knowledge is involved. Additionally, Tortoriello, Reagans, and McEvily (2012) suggest that knowledge transfer between different organizational units is particularly effective when social interactions are frequent, pleasant and transmit non-redundant information. Accordingly, Tsai (2000) found that network centrality and trustworthiness 22 Introduction explain the formation of new ties between newly formed units and already-existing units when their strategic relatedness was high. In sum, research at the business unit level emphasizes that informal social networks increase the transfer of knowledge and product innovation. At the level of teams, prior research has revealed the positive effects of inter- and intrateam social networks. A meta-analysis by Balkundi and Harrison (2006) points to evidence that teams that are more central in interteam networks show superior task performance than those that are less central. Furthermore, this meta-analysis demonstrated that teams with dense intrateam networks show higher levels of task performance and team viability. However, recent studies challenge the evidence of these linear effects of inter- and intrateam networks. Gibson and Dibble (2013) found that engagement in external activities has a curvilinear effect on team effectiveness. Furthermore, Oh, Chung, and Labianca (2004) showed that moderate levels of intrateam networks have the strongest impact on group effectiveness because engagement in internal social networks may reach a point of diminishing returns. Accordingly, Chung and Jackson (2013) demonstrated that the intrateam network of a specific form of instrumental ties, trust strength, has a curvilinear effect on team performance. Furthermore, the research on team-level interaction examined the association between social networks and leadership. For example, the meta-analysis by Balkundi and Harrison (2006) showed that teams in which the formal leaders are more central in intrateam networks achieved higher task performance. Additionally, Balkundi, Harrison, and Kilduff (2011) demonstrated with time-lagged data that leaders who are more central in intrateam networks are perceived as transformational by their team members. In sum, the team-level literature shows that internal and external social networks have a positive effect on team performance, although there might points of diminishing returns for both kinds of networks. At the dyadic level, prior research has shown that individuals with central roles in social networks are associated with greater access to resources, stronger organizational attachment, higher job satisfaction, and greater job performance (Brass et al., 2004; Sparrowe, Liden, Wayne, & Kraimer, 2001). Furthermore, a vast number of studies demonstrate that social similarity increases the likelihood of having reciprocal and trustful social relationships (Brass, et al., 2004). Generally, this positive effect has been found for a large variety of different similarity dimensions, such as age, sex, education, prestige, social class, tenure, and occupation (Joshi, 2006; McPherson, SmithLovin, & Cook, 2001). Additionally, physical and temporal proximity determine Introduction 23 whether and how individuals interact with each other socially (Brass et al., 2004). Festinger, Schachter, and Back (1950) even suggest that this proximity is more important than the effect of social similarity. In the same vein, past research has emphasized that formal organizational structure can also constrain informal social networks (Brass et al., 2004). For example, prior studies show that, in organic organizational structures, individuals can interact in a more unconstrained and flexible manner than in mechanistic ones (Tichy & Fombrun, 1979). Moreover, past research has shown that personality has an effect on informal social networks (Brass et al., 2004). These studies propose that two personality traits, proactive personality and self-monitoring, positively influence individuals’ initiative to build informal social networks. A proactive personality is a disposition directed toward taking action to influence one’s environment (Thompson, 2005). Self-monitoring is a personality characteristic indicating the extent to which individuals monitor environmental cues and modify their behavior to meet external expectations (Mehra, Kilduff, & Brass, 2001). Past social network research suggested that there might be a conflict between social network practices at different organizational levels (Ibarra, Kilduff, & Tsai, 2005). At the organizational level, a bundle of human resource practices referred to as highperformance work systems (HWPSs) has been proposed to facilitate a social structure by bridging ties between different organizational sub-units (Evans & Davis, 2005). HPWSs involve rigorous selection procedures, high levels of training, merit-based promotions, skill-based pay, group-based rewards, cross-functional and cross-trained teams, grievance procedures, information sharing, and internal participatory mechanisms (Datta, Guthrie, & Wright, 2005). Past research has shown that HPWSs are associated with numerous positive organizational outcomes, such as lower turnover rates (Sun, Aryee, & Law, 2007), higher worker productivity (Arthur, 1994; Datta et al., 2005), improved manufacturing quality (Datta et al., 2005; MacDuffie, 1995), greater firm innovation (Chang, Gong, Way, & Jia, 2013), enhanced firm growth (Patel, Messersmith, & Lepak, 2013), and superior financial performance (C. J. Collins & Clark, 2003; Huselid, 1995). However, this literature has seldom examined organizational-level absenteeism as an outcome of interest. The few prior studies found a positive effect of HPWSs on organizational-level absenteeism (Guthrie, Flood, Liu, & MacCurtain, 2009; Zhou, Chew, & Spangler, 2005; Wood, Van Veldhoven, Croon, & de Menezes, 2012). The third research question of this dissertation seeks to examine whether HPWSs (an organizational-level practice to facilitate social networks) and individuals’ social network building (an individual-level practice) may impede each other and thus result in a detrimental effect on organizational-level absenteeism. 24 Introduction Research question 3: Does the interplay between high-performance work systems and employees’ network building detrimentally affect organizational-level absenteeism? 1.4 Outline of the Dissertation As elaborated in the previous chapters, this dissertation examines positive social interactions at multiple organizational levels. Studies 1 and 2 examine boundary activities and their outcomes at the level of teams. Hence, for these studies, data needed to be collected at the level of teams. Study 3 explores cross-level interactions of high-performance work systems (HPWSs) and employees’ social network building initiative. Thus, for this study, data needed to be gathered at the level of organizations. Figure 12 provides the chapter structure of this dissertation. The following paragraphs provide a short summary of these five chapters. Chapter 1: Introduction. This chapter familiarizes the reader with the POS perspective. It emphasizes the theoretical and practical relevance of the research topic and explains the motivation and specific research focus of the dissertation. Next, based on this research focus, this dissertation derives three research questions for the subsequent empirical studies. Finally, this chapter provides an overview of the overall design and structure of this dissertation. Chapters 2 through 4 present the three empirical studies. The structure of these studies follows the standard format of quantitative deductive theory-testing papers in the field of management. Chapter 2: Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance. Chapter 2 presents the first empirical study of this dissertation. It examines whether and how team boundary-buffering activities affect team innovative performance. After introducing the theoretical rationale of this study, hypotheses are developed based on the conceptual framework of the job demands-resources model. These hypotheses are tested and discussed against the background of the literature of team boundary activities, job demands and resources, and productive energy. Introduction Figure 1-1 25 Overview of Chapter Structure Chapter 1: Introduction The positive organizational scholarship perspective Theoretical and practical relevance of the dissertation Motivation and research focus Research questions Outline of the dissertation Chapter 2: Study 1 Linking team boundary-buffering activities and innovative performance Chapter 3: Study 2 How does transformational leadership increase team productive energy? Chapter 4: Study 3 Are high-performance work systems always beneficial? Chapter 5: Overall Discussion and Conclusion Summary Theoretical integration of most important research findings Limitations and directions for future research Practical implications Conclusion Chapter 3: Study 2 – How Does Transformational Leadership Increase Team Productive Energy? Chapter 3 includes the second study of this dissertation. This study explores whether the link between transformational leadership and team productive energy is mediated by team boundary-spanning activities. This chapter develops and tests a theoretical model drawing from the conservation of resources theory and social networks literature. The results of the study are discussed, referring to the literatures of team productive energy, transformational leadership, and diversity. 26 Introduction Chapter 4: Study 3 – Are High-Performance Work Systems Always Beneficial? Chapter 4 explores potential negative effects of the interactions between highperformance work systems and employees’ network building initiative on organizational-level absenteeism. This chapter in particular contributes to the literatures of high-performance work systems, positive social interactions, and absenteeism. Chapter 5: Overall Discussion and Conclusion. The final chapter revisits the research motivation and research questions and discusses the most important results of the three empirical studies against the background of the literatures on team boundary activities, collective human energy, and intraorganizational social networks. Finally, it summarizes the overall limitations and opportunities for future research and offers practical implications. Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 27 2 Linking Team Boundary-Buffering Activities and Innovative Performance: A Moderated Mediation Model1 2.1 Abstract Research on team boundary activities has traditionally focused on team actions that involve engagement with external environments for important resources and support (i.e., boundary spanning) and paid significantly less attention to team actions that involve disengagement from the environment as a way to manage external demands (i.e., boundary buffering). As a result, little is known about how and when team boundarybuffering activities influence team innovative performance. To address this gap, this chapter draws from research and theory of the job demands-resources model (Demerouti, Bakker, Nachreiner, & Schaufeli, 2001) to argue that (1) boundary-buffering activities protect teams from distracting information, disruptive events, and negative emotions from the external environment, thereby enhancing team productive energy (Cole, Bruch, & Vogel, 2012), (2) team productive energy, in turn, is associated with higher levels of team innovative performance, and (3) the effect of boundarybuffering activities on team innovative performance via team productive energy is stronger among teams experiencing higher levels of chronic job demand overload. Using a multi-source field study of 89 operational automotive research and development (R&D) teams comprising 813 employees and their team leaders, full support was found for the hypothesized model. Keywords: team innovative performance, team boundary-buffering activities, team productive energy, chronic team job demand overload, moderated mediation 1 Earlier versions of this paper have been accepted and/or presented at several international, peer-reviewed conferences, namely the 73rd AOM Annual Meeting 2013, the EAWOP Small Group Meeting on Innovation 2013, and the 16th EAWOP Conference 2013. 28 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Perfor- mance 2.2 Introduction As organizations become increasingly de-bureaucratized and less hierarchically-structured (Cross, Yan, & Louis, 2000; Yan & Louis, 1999; Zammuto, Griffith, Majchrzak, Dougherty, & Faraj, 2007), research and development (R&D) teams face increased levels of pressure and demands from various stakeholders inside and outside of the organization (Faraj & Yan, 2009). For example, upper management frequently expects R&D teams to deliver innovative solutions to technical problems in order to meet market demands, even if these have not been thoroughly explored (Keller, 2001). Similarly, customers habitually expect organizations to deliver low-cost, highly innovative products quickly, placing additional demand on R&D teams (Edmondson & Nembhard, 2009). Finally, in an increasingly competitive business landscape, organizations often put employees on multiple projects simultaneously in order to reduce costs and to exploit their functional expertise in different cross-functional contexts. As a result, members of R&D teams are often asked to divide their time and commitment among multiple teams and projects, causing conflicting priorities that can work against team effectiveness (Marrone, 2010). To manage the external pressures, demands, and interference placed on R&D team members (Keller, 2001), these teams engage in what Faraj and Yan (2009, p. 606) described as boundary-buffering activities, defined as “formal strategies and procedures and informal codes and norms for deflecting and managing external demands on team members.” These activities, which were previously labeled “guard” and “sentry” activities (Ancona & Caldwell, 1988), involve monitoring the information and resources that external stakeholders request from the team (Ancona & Caldwell, 1992b). Furthermore, these activities include deciding how the team will react to these external demands as well as controlling the information and resources that external agents want to send into the team (Faraj & Yan, 2009). Boundary-buffering activities are a strategy of disengagement in which teams close themselves off from exposure to the external environment, thereby helping teams focus on group tasks and objectives to achieve high team performance. Similarly, Yan and Louis (1999) suggest that boundary-buffering activities aim at sealing off the productive core of team activities, smoothing the variability of inputs and outputs, and forecasting variation and uncertainty. In sum, teams utilize boundary-buffering activities to respond to environmental disturbances and disruptive environmental forces (Cross et al., 2000). Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 29 Although boundary-buffering activities are theorized to be an important activity that helps protect an entity from environmental demands and pressures, a dearth of research has examined how and when these activities influence team innovative performance, defined as a team’s ability to generate innovative ideas, processes, productions, or procedures (West & Farr, 1990). One reason for the lack of research on these activities that involve disengagement from the environment might be that past research has primarily focused on how teams employ activities that include engagement with the external environment, or what is known as boundary-spanning activities (Ancona & Caldwell, 1992b). A rich body of literature suggests that boundary-spanning activities help improve the innovation process within organizations (Ancona & Caldwell, 1992b; Hulsheger, Anderson, & Salgado, 2009; Tushman, 1977; Tushman & Scanlan, 1981b). However, past literature on team boundary activities does inform about whether and how the complementary approach of team boundary buffering also increases teams’ innovative performance. Given the dearth of research on team boundary-buffering activities, this chapter examines whether, how, and when boundary-buffering activities influence team innovative performance. In this study, we draw from research and theory of the job demands-resources model (JD-R) to explain why and how team boundary-buffering activities increase team innovative performance by enhancing team productive energy. Productive energy is defined as unit members’ “experience and demonstration of positive affect, cognitive arousal, and agentic behavior among unit members in their joint pursuit of organizationally salient objectives” (Cole et al., 2012, p. 447). According to the JD-R model, individuals who experience higher levels of job resources (e.g., autonomy and social support) through a motivational mechanism will be more likely to sustain their energy and hence show higher levels of in-role and extra-role performance (Schaufeli & Taris, in press). The JD-R model defines job resources as “those physical, psychological, social, or organizational aspects of the job that (a) reduce job demands and the associated physiological and psychological costs, (b) are functional in achieving work goals, or (c) stimulate personal growth, learning, and development” (Demerouti, Bakker, Nachreiner, & Schaufeli, 2001, p. 501). Applying this insight to the team level, we propose that R&D teams engaging in boundary-buffering activities (a set of job resources that protects them from external demands) have more team productive energy as compared to those that do not engage in these activities, which ultimately increases team innovative performance. 30 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Perfor- mance However, a recent extension of the JD-R model from the stress literature (Seers, McGee, Serey, & Graen, 1983), the so-called coping hypothesis, proposes that the existence of considerable job demands (e.g., time pressure and work overload) may actually increase the salience of job resources (Bakker, Hakanen, Demerouti, & Xanthopoulou, 2007). Building on this idea, it is suggested that team boundary-buffering activities are more effective in teams that experience higher levels of chronic job demand overload (defined as teams having too much work to do in the time available [Beehr, Walsh, & Taber, 1976]), as compared to those that suffer low levels of chronic job demand overload. Specifically, it is proposed that this is the case because team boundary-buffering activities help teams with chronic job demand overload to focus on their job and thus maintain a sense of team productive energy. This study offers several important contributions. First, it is one of the first to explore the underlying theoretical processes that explain the consequences of team boundary-buffering activities on team innovative performance. This is an important contribution because past research on team boundary activities has predominantly focused on team boundary-spanning activities, assuming that team boundary-buffering activities have little or even negative effects on team innovative performance (DrachZahavy & Somech, 2010). At the same time, the study improves the general conceptual understanding of team boundary activities. Prior work has called for a deeper consideration of how teams carry out critical team boundary activities (Marrone, 2010). This dissertation responds to this call by introducing the idea of productive energy and examining whether this construct may help to explain more about critical mechanisms linking boundary-buffering activities and team innovative performance. Furthermore, prior theoretical work has suggested that the effectiveness of different kinds of boundary activities is contingent upon unique boundary conditions (Choi, 2002; Marrone, 2010). Hence, the literature suggests that a more detailed understanding of the moderating conditions of specific boundary activities is needed. The scarce empirical work that has studied moderating conditions of team boundary-buffering activities has applied an organizational design perspective (Galbraith, 1977; Tushman & Nadler, 1978) and focused on structural contingency factors, namely, task uncertainty and resource scarcity (Faraj & Yan, 2009). Complementing this perspective, this study contributes by adding chronic team job demand overload as a psychological boundary condition. Furthermore, we suggest that past research has insufficiently studied the role of team boundary-buffering activities, in part because it primarily considered team Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 31 boundary activities as a strategy to overcome problems of information processing between different organizational units (Galbraith, 1977; Tushman & Nadler, 1978). To complement this functional, cognitive perspective, we apply a person-centered, emotive perspective, drawing upon the construct of team productive energy as a mediator that comprises cognitive, affective, and behavioral aspects (Cole et al., 2012). Productive energy is one of those constructs – along with humility (Owens et al., 2013) and thriving (Spreitzer et al., 2005) – that emerged in response to the positive organizational scholarship movement (Cameron et al., 2003). This movement has called for enlarging the realm of generative states and outcomes that can be legitimately studied in their own right in the organizational sciences (Cameron et al., 2003). Past research has demonstrated several beneficial effects of productive energy (Cole et al., 2012; Raes et al., 2013; Walter & Bruch, 2010). We add to this literature by linking team boundary-buffering activities as antecedent and team innovative performance as a consequence of team productive energy. Last but not least, our study contributes to the conceptual and empirical work that is directed toward extending the JD-R model. Specifically, it adds to recent JD-R literature that aims at incorporating the so-called coping hypothesis from the stress literature (Seers et al., 1983). These studies have found that high job demands can “boost” the effect of job resources (Bakker et al., 2007; Bakker, van Veldhoven, & Xanthopoulou, 2010). The current study investigates whether this coping effect also holds at the team level and enhances the effectiveness of team boundary-buffering activities. Additionally, this dissertation is one of the first to apply the JD-R model at the level of teams. It does so by applying unique unit-level theory and concepts (team boundary-buffering activities, team productive energy) and not simply adopting the reference of individual-level constructs to the team level and then aggregating them (Bakker, Van Emmerik, & Van Riet, 2008a; Torrente, Salanova, Llorens, & Schaufeli, 2012b; Xanthopoulou, Bakker, Demerouti, & Schaufeli, 2009). In using this unique team-level construct, this dissertation responds to a desideratum stated in recent JD-R literature (Schaufeli & Taris, in press). 2.3 Theoretical Background and Hypotheses Development Early research on boundary activities built upon an organizational design perspective (Galbraith, 1977), predominantly emphasizing the importance of processing technical information between different organizational units (Tushman & Nadler, 1978). Overall, this initial research showed that there is a positive link between cross-boundary 32 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Perfor- mance communication and organizational performance (e.g., Allen, 1984). For instance, this research described several organizational communication roles (e.g., communication stars, gatekeepers and liaisons) that improve the organizational innovation process (Tushman, 1977; Tushman & Scanlan, 1981a). Predominantly, this stream of research has focused on how individuals span the boundaries of their R&D laboratories, respective departments, and organizations as a whole in order to improve innovative outcomes (Tushman, 1977). Although this research has taught us much about how R&D laboratories can improve their innovation process through inter-unit communication, it does not explain how the opposite activity of boundary buffering may influence the innovation process. Subsequent research has studied team boundary activities with R&D teams. This work has either followed the initial research of boundary activities with its narrow focus on cross-boundary communication (Ancona & Caldwell, 1992a; Keller, 2001) or conceptually confounded the inside-out process of boundary spanning with the outside-in process of boundary buffering (e.g., Ancona & Caldwell, 1990; Ancona & Caldwell, 1992b). Although this line of inquiry has offered us a more in-depth understanding of how R&D teams engage in vertical communication in order to meet the expectations of upper management and horizontal communication in order to coordinate work, obtain feedback, and scan the technical and market environment (Ancona & Caldwell, 1992b), it has still mainly followed the conceptualization of boundary activities as a strategy to improve information processing between different organizational units (Galbraith, 1977; Tushman & Nadler, 1978). Consequently, it has yet to elaborate upon the specific roles of team boundary-buffering activities. 2.3.1 Team Boundary-Buffering Activities and Team Productive Energy Conceptually, this chapter draws upon the JD-R model to explain why team boundarybuffering activities maintain a collective sense of team productive energy (Schaufeli & Taris, in press). Referring to the JD-R model, job resources help individuals, through a motivational mechanism, to feel more ready to work and hence show higher levels of in-role and extra-role performance (Schaufeli & Taris, in press). With few exceptions, the JD-R model has mainly been applied at the level of individuals (Salanova, Agut, & Peiro, 2005; Salanova, Llorens, Cifre, & Martinez, 2012; Salanova, Llorens, Cifre, Martinez, & Schaufeli, 2003). However, this dissertation suggests that team boundarybuffering activities influence productive energy primarily at the team level because Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 33 these activities trigger processes of cognitive and affective contagion (Barsade, 2002; Gibson, 2001) and behavioral entrainment (Ancona & Chong, 1996). Accordingly, the following will conceptually link these team boundary-buffering activities with team productive energy at a cognitive, affective and behavioral level. On a cognitive level, team boundary-buffering activities positively influence team productive energy by deflecting distracting external information. These activities include several actions to maintain a team’s information processing capacity. For example, one specific activity implies filtering of external information (Ancona & Caldwell, 1988). In the case that a certain piece of external information is given to specific team members, and they decide that it is not relevant for the team’s mission, they will not pass it on to the whole team. Another activity involves evaluating external requests (Ancona & Caldwell, 1988). In the case of external stakeholders requesting certain efforts from a team and team members deciding that these efforts are not relevant to their mission, the team will not conform to this request. Additionally, team members show helping behavior when high external demands are placed on individual members (Faraj & Yan, 2009). This specific activity hinders cognitive overload of individual members and balances the cognitive load within a team. At the same time, when team boundary-buffering activities are not present, external distractions hit a team without being absorbed and lower its information-processing capacity and thus its cognitive energy. On an affective level, team boundary-buffering activities preserve team productive energy by buffering negative events in the external environment. For example, when members of a boundary-buffering team are involved in a conflict with an external stakeholder, they try not to pass their negative affect on to their teammates. Furthermore, the members are careful with how they internally communicate external information that might cause insecurity and disturbances. In the case that they have to communicate bad news, they do it in a way that preserves a team’s positive affective state as much as possible. However, when teams do not exhibit boundary-buffering activities and team members forward bad news and gossip without caution (e.g., about lay-offs, failure of an important product, or a new firm strategy), this might immediately cause the affective state of a team – and ultimately its affective energy – to deteriorate. Finally, on a behavioral level, team boundary-buffering activities increase behavioral readiness, and thus productive energy, by limiting external demands to a degree that team members are capable of executing. For example, members of boundary-buff- 34 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Perfor- mance ering teams do so by clearly communicating to external stakeholders when they feel overloaded with work. Furthermore, they decline external requests when they perceive them as not legitimate. Additionally, in the case of external requests tending to overload the team members, they preserve their readiness to act by setting clear priorities about what tasks to execute first. However, when teams fail to buffer their boundaries, they might become burdened with external demands and lose their agility and behavioral energy. H1: Team boundary-buffering activities are positively related to team productive energy. 2.3.2 The Moderating Effect of Chronic Team Job Demand Overload The literature on the JD-R model has incorporated two alternative arguments from the stress literature to explain a moderating effect between job demands and job resources (Schaufeli & Taris, in press; Seers et al., 1983). The first argument is the so-called buffering hypothesis, which suggests that the negative effect of job stress (respective job demands) on job-related outcomes will be diminished for individuals who experience high levels of social support (respective job resources [Caplan, Cobb, French, Van Harrison, & Pinneau, 1975]). However, this buffering hypothesis is not strongly supported by empirical evidence (Beehr, 1976; Cohen & Wills, 1985). Hu, Schaufeli, and Taris (2011) showed in a comprehensive study that job resources buffered the negative effect of job demands on burnout only in one of two samples. Moreover, the predictive power of this buffering effect dropped dramatically when controlling for the additive main effect of a composite measure of job demands and job resources. The second argument incorporated from the stress literature is the so-called coping hypothesis, which posits that the effect of social support (respective job resources) on job-related outcomes is especially beneficial when individuals experience high levels of job strain stress (respective job demands [Seers et al., 1983]). For example, Jenkins (1979) suggested that, in the case of individuals suffering high levels of strain, their requests for social support might be an adaptive coping strategy because it signals the need to reduce stress on co-workers. However, in turn, asking for social support is unnecessary if individuals experience low levels of strain. The argument of the coping hypothesis is also in line with prior individual-level studies drawing upon the JD-R model. For example, Bakker, van Veldhoven, and Xanthopoulou (2010) found that Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 35 employees’ job resources (i.e., skill utilization, learning opportunities, autonomy, colleague support, leader support, performance feedback, participation in decisionmaking, and career opportunities) increased their task enjoyment and organizational commitment, especially when their job demands (i.e., workload and emotional demands) were high. Likewise, Bakker, Hakanen, Demerouti, and Xanthopoulou (2007) revealed that teachers’ job resources (i.e., job control, supervisor support, information, organizational climate, innovative teaching methods, and appreciation) increased their work engagement, particularly when their pupils showed high levels of behavioral misconduct. Finally, Xanthopoulou, Bakker, and Fischbach (2013) demonstrated that employees’ personal resources (i.e., self-efficacy and optimism) specifically improved their work engagement when job demands (i.e., emotional demands and dissonances) were high. Drawing on the argument of the coping hypothesis, this study proposes that team boundary-buffering activities sustain and even increase productive energy, especially when chronic team job demand overload is high, because boundary-buffering activities then represent an active coping strategy to deflect additional external demands and other types of outside pressures and inferences. However, when teams are not chronically overloaded with job demands, these team boundary-buffering activities are not necessary and do not add any extra benefit. H2: Chronic team job demand overload moderates the relationship between team boundary-buffering activities and team productive energy: The positive effect is stronger when chronic team job demand overload is higher. 2.3.3 Team Productive Energy and Team Innovative Performance Innovation has been described as a discontinuous process rather than separate, progressive stages (Schroeder, Van de Ven, Scudder, & Polley, 1989). However, Scott and Bruce (1994) suggest that this process involves three distinct activities: idea generation, idea promotion, and idea realization. Drawing on those insights, we assume that members of R&D teams carry out any combination of these innovation activities at any given time. In the following, to explain why team productive energy increases team innovative performance, we will again conceptually distinguish between the cognitive, emotional, and behavioral levels. On a cognitive level, team productive energy increases team innovative performance because it broadens team members’ repertoire of thoughts (Fredrickson, 2003). 36 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Perfor- mance Broadening the repertoire of thoughts helps in developing new ideas, which is most important for the activity of idea generation (Scott & Bruce, 1994). In particular, we suggest that a broader repertoire of thought increases the fluency, originality, and flexibility of ideas. Idea fluency refers to the number of non-redundant ideas that are being generated, originality to their uncommonness or infrequency, and frequency to the use of a variety of different cognitive categories and perspectives (De Dreu, Baas, & Nijstad, 2008). Teams with a broader repertoire of thoughts can choose from a greater number of alternative, more original ideas from a wider range of cognitive categories. This increases their chances of finding an innovative solution to a given, novel problem at hand (De Dreu & West, 2001). However, teams with a narrow repertoire of thoughts focus on ideas that have already been developed and successfully applied in the past. On an affective level, team productive energy increases team innovative performance because it provides an affective climate that enables team members to connect among themselves and with external stakeholders. Our argument why this is the case is twofold: First, on an affective level, team productive energy supports team members’ sociability. Second, this sociability increases team members’ interconnectedness. Although there is not much empirical evidence demonstrating a positive link between positive affect and sociability at the level of teams, there is a huge body of experimental evidence pointing to this link at the level of individuals (Eisenberg, Fabes, & Murphy, 1995; Pavot, Diener, & Fujita, 1990; Watson, 1988; Watson, Clark, McIntyre, & Hamaker, 1992). For example, Burger and Caldwell (2000) showed that college seniors with high positive affect were more successful in subsequent social job search activities and job interviews than those seniors with low positive affect. On the contrary, Eisenberg and colleagues (1995) found that low emotional intensity was associated with individuals’ lack of sociability. However, most informative to support our theoretical argument is a study that combines a laboratory and a field experiment: In the first experiment, Berry and Hansen (1996) examined positive affect within dyadic social interactions. They found that individuals’ positive affect was positively related to the quality of their social interactions (as rated by themselves, their interaction partners, and independent observers). In the second experiment, individuals kept diaries of their social interactions in a field setting for one week. The results of this study revealed that participants’ positive affect was positively related to both the quantity of their social interactions (rated as the absolute number and total time) and the quality of these social interactions (in terms of recreation and enjoyment). Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 37 In turn, we suggest that team members’ increased level of sociability supports their innovative performance because it helps them to connect among themselves as well as with external stakeholders. As van de Ven (1986) states, most organizational innovation challenges require solutions that can only be created and developed collectively. Consequently, connecting with others (inside and outside of the team) should improve all three aforementioned innovation activities. Again, to the best of our knowledge, there is no empirical evidence at the level of teams, but we may support our argument with evidence at the level of individuals. For example, Estrada, Isen, and Young (1997) demonstrated that individuals with induced positive affect better integrated divergent information and different perspectives than those in the control group with no treatment. Accordingly, a meta-analysis found a positive link between positive affect and creativity (Baas, De Dreu, & Nijstad, 2008). In particular, a recent study showed that individuals’ highly activated positive affect predicted time lagged effects of the previously mentioned innovation activities of idea generation, promotion, and realization (Madrid, Patterson, Birdi, Leiva, & Kausel, 2014). Finally, on a behavioral level, team productive energy increases team innovative performance because it increases team members’ proactive behaviors (Grant & Ashford, 2008) and broadens team members’ repertoire of actions (Fredrickson, 2003). We suggest that both aspects contribute to the activities of idea promotion and realization. For example, to convince external stakeholders of the usefulness of new ideas, team members have to proactively approach these stakeholders and appropriately adjust their behavior to the social context. Furthermore, realizing a new idea requires team members to proactively tackle a new idea and change their usual behavioral patterns to explore new procedures, processes, or techniques. Again, on the individual level of analysis, past research drawing on the JD-R model demonstrated that individuals’ personal initiative was positively related to innovation (Hakanen, Perhoniemi, & Toppinen-Tanner, 2008). H3: Team productive energy is positively related to team innovative performance. 2.3.4 The Mediating Effect of Team Productive Energy We expect that team boundary-buffering activities and team innovative performance are linked through team productive energy. Drawing upon the JD-R model, developing Hypothesis 1, we explained how team boundary-buffering activities are conceptually 38 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Perfor- mance linked with team productive energy at cognitive, affective, and behavioral levels. In turn, in Hypothesis 3, we explicated how productive team energy is associated with team innovative performance at the same three levels. Furthermore, in Hypothesis 2, drawing upon the coping hypothesis from the stress literature, we illustrated why we suggest that team boundary-buffering activities are especially effective in creating team productive energy, and ultimately team innovative performance, when chronic team job demand overload is high. Binding together our complete conceptual research model, we suggest the following: H4a: Team productive energy positively mediates the link between team boundary-buffering behaviors and team innovative performance. H4b: Chronic team job demand overload positively moderates the positive indirect link between team boundary-buffering activities and team innovative performance (as mediated through team productive energy): The positive indirect link will be stronger with high chronic team job demand overload. 2.4 Description of Study Methods 2.4.1 Data Collection We collected data from operational R&D teams in the R&D division of a multinational automotive company based in Germany. These teams were especially suitable to our investigation of team boundary activities because they had to work within a highly interconnected, project-based organizational structure (Marrone, 2010). During the data collection, several actions were taken to maximize the response rate. The head of the division sent an e-mail to all employees, encouraging them to participate in our study. This e-mail highlighted the importance of the study to the company and guaranteed the confidentiality of their responses. At two and three weeks after the data collection had started, we sent a reminder e-mail to non-respondents. Each R&D team received a written report of the results shortly after the survey. Furthermore, we offered train-theleader workshops to provide team leaders the opportunity to discuss the results with their teams. To reduce common method effects, we collected data from three different sources (Podsakoff, MacKenzie, Lee, & Podsakoff, 2003). First, we gathered answers Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 39 on team boundary-buffering activities and chronic team job demand overload from the team members, because they were best suited to describe processes that take place within their teams (Mathieu, Maynard, Rapp, & Gilson, 2008). Furthermore, we conceptualized team productive energy and team innovative performance as holistic properties of a dynamic system rather than properties of specific team members (Bell & Fisher, 2012). Thus, second, we asked team leaders to rate the overall productive energy of their teams. This approach is in line with prior research (Kunze & Bruch, 2010). Third, we gathered responses on team innovative performance from the supervisors of the team leaders. In doing so, we aimed at preventing a self-serving bias, because members and leaders of a team might rate their own team innovative performance more positively than would a team’s external stakeholders (Ancona & Caldwell, 1988). 2.4.2 Sample The original sample included 105 teams (786 team members, 95 team leaders, and 18 supervisors of team leaders). The overall response rate added up to 73%. Responses represented 95 teams with matched data from all three different data sources. Following the team definition of McIntyre and Salas (1995), we excluded four teams from the analysis that were comprised of fewer than three persons, because we explicitly aimed at studying at least triads as opposed to smaller entities, such as dyads. Our final sample was comprised of 89 teams (724 team members, 89 team leaders, and 18 supervisors of team leaders), including six teams with only two responding team members, six teams with three responding team members, nine teams with four responding team members, and 68 teams with five or more responding team members. The vast majority of team members had a university degree (93%) and were male (91%). The average team member was between 36 and 40 years old and had worked for the company for 12.7 years (SD = 10.0 years). Almost all participants’ first language was German. 2.4.3 Measures We acquired responses for all items on a Likert-type scale ranging from (1) "strongly disagree" to (5) "strongly agree", unless otherwise indicated. Team boundary-buffering activities (α =.89). We measured team boundarybuffering activities using a four-item scale from Faraj and Yan (2009). These four 40 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Perfor- mance items had the stem “To what extent …” and continued as follows: (1) “are outside pressures deflected or absorbed so that the team can work free of interference,” (2) “are outsiders prevented from ‘overloading’ the team with either too much information or too many requests,” (3) “does the team or team leader help team members manage the demands placed on them by other organizational units,” and (4) “do you feel that team members work in a well-buffered or protected environment.” Team members rated the extent to which their team showed the activities described. The aggregation procedure was justified by satisfactory aggregation statistics (ICC1 = .18; p < .001; ICC2 = .64, median rwg = .85). Team chronic job demand overload (α =.73). To measure team chronic job demand overload, we adapted a scale from Beehr and colleagues (1976). This measure had the following three items: (1) “In my team, we frequently see ‘light at the end of the tunnel’ after phases of intense work (reverse coded),” (2) “In my team, we regularly have the opportunity to rest and relax (reverse coded), (3) “Members of this team have so much work to do that they are often overstrained.” A confirmatory factor analysis (CFA) revealed that these three items had sufficient high factor loadings (λ=.97, λ = .45, and λ = .75, respectively). However, we could not perform Chi2-based fit indices because a CFA of a three-item measure does not provide any degrees of freedom. Aggregating this scale to the team level was justified by satisfactory aggregation statistics (ICC1 = .20; p < .001; ICC2 = .66; median rwg = .83). Team productive energy (α = .77). We measured team productive energy using a 14-item scale from Cole and colleagues (2012) that builds upon a three-dimensional reflexive measurement model (Jarvis, MacKenzie, & Podsakoff, 2003). Five items capture how the emotional aspects of team productive energy are perceived (e.g., “People in my team feel enthusiastic in their job”); five items on how its cognitive aspects are perceived (e.g., “My work group is ready to act at any given time”); and four items on how its behavioral aspects are perceived (e.g., “People in my work group go out of their way to ensure that the company succeeds”). The overall model fit of a second-order CFA showed satisfactory results (χ2 [74] = 96.24, CFI = .90, IFI = .91, SRMR = .07). In line with prior research (Kunze & Bruch, 2010), we averaged all items to build an overall productive energy score. Team innovative performance (α = .83). We quantified innovative team performance with a nine-item scale developed by Janssen (2001). This scale builds upon Kanter’s (1988) model of different development stages in the innovation process. Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 41 Three items refer to idea generation ([1] “creating new ideas for improvement,” [2] “searching out new working methods, techniques, or instruments,” and [3] “generating original solutions for problems); three items refer to idea promotion ([4] “mobilizing support for innovative ideas,” [5] “acquiring approval for innovative ideas,” and [6] “making important organizational members enthusiastic about innovative ideas”); and three items refer to idea realization ([7] “transforming innovative ideas into useful applications,” [8] “introducing useful ideas into the work environment in a systematic way,” and [9] “evaluating the utility of innovative ideas”). Supervisors of the team leaders rated the extent to which teams showed the described activities (Bell & Fisher, 2012). Consistent with Janssen (2001), we averaged all item responses to build an overall score for team innovative performance. Controls. Most of the members within the R&D teams of our sample under study were members of numerous project teams simultaneously. We expected that this multiple team membership might influence team productive energy and team innovative performance. Hence, we controlled for team members’ average number of project team memberships. Additionally, prior research suggests that the degree to which teams reach across their team boundaries in order to acquire important information, resources, and support (i.e. team boundary spanning [Ancona & Caldwell, 1992b]) might positively affect team productive energy and team innovative performance (Hulsheger et al., 2009) Thus, we controlled for team boundary spanning using a fouritem scale from Faraj and Yan (2009). 2.5 Analyses and Results Table 2-1 shows the descriptive statistics and correlations of our study. As suggested by our hypotheses, team boundary-buffering activities were positively related to team productive energy (r = .33, p < .01). Furthermore, as predicted, team productive energy was positively correlated with team innovative performance (r = .23, p < .01). However, team boundary-buffering activities did not directly relate to team innovative performance (r = .05, p = ns). And although chronic team job demand overload was highly negatively associated with team-boundary buffering (r = -.67, p = .001), it did not directly relate to team productive energy (r = -.16, p = ns) and team innovative performance (r = .01, p = ns). 42 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Perfor- mance 2.5.1 Discriminant Validity of Measurement Model After aggregating the data to the level of teams, we performed CFAs to assess the convergent and discriminant validity of our constructs 2. Following Bentler’s (2007) and Hu and Bentler’s (1999) advice for sample sizes smaller than 200, we reported two incremental fit indices – the comparative fit index (CFI) and the incremental fit index (IFI) – combined with the standardized root mean square residuals (SRMR). For an acceptable fit, the SRMR should be below .08 (Browne & Cudeck, 1993) and the incremental fit indices should be above .90. Table 2-1 Means, Standard Deviations, and Zero Order Correlationsa Variable Controls Average number of project 1. team memberships Team boundary-spanning 2. activities Predictors Team boundary-buffering 3. activities 4. Team job demand overload 5. Team productive energy Dependent 6. Team innovative performance a M SD 1 2 3 4 5 4.74 2.41 3.12 0.30 -.15 2.81 0.47 -.16 3.50 0.47 .21 3.99 0.35 -.21 3.97 0.47 -.06 .51 *** * -.36 *** -.67 *** * .30 ** .33 ** .07 .05 -.16 .01 .23 ** N = 89 (teams); * p < .05; ** p < .01; *** p < .001 (two-tailed). The CFA of the measurement model yielded a good fit (Table 2-2, model I: χ2 [59] = 74.44, CFI = .97, IFI = .93, SRMR = .07). Furthermore, the results indicated a better fit was not provided by an alternative one-factor model (χ2 [65] =227.39, CFI=.70, IFI = .67, SRMR = .14, Δχ2 = 152.95, Δdf = 6, p < .001), a two-factor model in which team boundary-buffering activities with team chronic job demand overload as well as team productive energy with innovative performance represented a single latent variable (χ2 [64] = 151.73, CFI = .84, IFI = .80, SRMR =.12, Δχ2 = 77.29, Δdf = 5, p < .001), or a three-factor model in which team boundary-buffering activities with The items within the subscales of team productive energy and team innovative performance were parceled (a total aggregation model) prior to model estimation. No other constructs were parceled. 2 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 43 team chronic job demand overload, team productive energy and team innovative performance represented single latent variables (χ2 [62] = 100.66, CFI = .93, IFI = .90, SRMR = .07, Δχ2 = 26.22, Δdf = 3, p < .001). In sum, this analysis proposes that the constructs of our measurement model are distinct from each other and thus that our measurement model shows satisfactory discriminant validity. 2.5.2 Analysis of Research Model Structural equations modeling (SEM) with the statistical software package Mplus 5.2 was used to test the hypothesized research model. SEM offers three advantages over the traditional OLS regression framework. First, SEM offers the opportunity to take measurement errors into account by modeling latent variables. Second, it provides a simultaneous test of all hypothesized relationships at once. And third, it offers an overall assessment of how well the research model fits the data (Bollen, 1989). 2.5.3 Test of Hypotheses Figure 2-1 provides an overview of the tested relationships of our hypothesized research model. Main effects. Hypothesis 1 suggested that team boundary-buffering activities increase team productive energy. The corresponding path in our model was significant, supporting Hypothesis 1 (Figure 2-1: γ = .27, SE = .11, one-sided p < .05). Hypothesis 3 posited that team productive energy increases team innovative performance. Also, this corresponding path weight was positive and significant and thus supported Hypothesis 3 (Figure 2-1: β = .39, SE = .21, p < .05). However, the direct effect of team boundary-buffering activities on team innovative performance was not significant, neither in the presence of team productive energy (Figure 2-1: γ = -.06, SE = .13, p=ns) nor in its absence (γ = .00, SE = .14, p = ns). 44 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance Table 2-2 Model I Measurement model II Mediation-only modela III Moderated mediation modela a Overall Structural Equation Model Fit Comparison χ2 df CFI IFI SRMR AIC BIC 74.44 137.05 59 79 .97 .93 .07 1305.73 1417.72 .93 .93 .07 1728.55 1202.38 Including control variables (average number of project team memberships, team boundary spanning) ΔAIC ΔBIC 1855.47 422.82 437.75 1344.23 -428.30 -433.28 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance Figure 2-1 Moderated Mediation Structural Equation Model N = 89 (Teams); standardized path coefficients are reported. The values in the parentheses are standard errors. † p < .10, * p < .05, ** p < .01, *** p < .001 (two-tailed). 45 46 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance Moderation effect. Hypothesis 2 proposed that the interaction of team boundarybuffering activities and team chronic job demand overload positively influences team productive energy. To model this interaction effect, we used the latent moderated SEM procedure suggested by Klein and Moosbrugger (2000) as implemented in Mplus (Muthén & Muthén, 1998-2012). One advantage of this approach is that it takes into account the non-normal distribution of an interaction between latent constructs; however, as a downside, it provides no Chi2-based overall fit statistics, such as the CFI or IFI. Alternatively, we used two comparative fit indices to assess the fit of our moderated mediation model: the Akaike information criterion (AIC) and the Bayesian information criterion (BIC). The lower the values of these comparative fit statistics, the better the fit of the model (Burnham & Anderson, 2004). At first, we only tested the mediation model without including the interaction term. This step allowed us to assess the mediation-only model using the widely known Chi2-based fit statistics, such as CFI and IFI. In a second step, we added the latent interaction term (Klein & Moosbrugger, 2000), comparing the AIC and BIC values of the prior mediation-only model and this final moderated mediation model. Table 2-1 summarizes the overall fit statistics of those two models. The mediation model without an interaction term showed a good fit of the data (Table 2-2, model II: χ2 [79] = 137.05, CFI = .93, IFI=.93, SRMR =.07, AIC = 1728.55, BIC = 1855.47). However, entering the interaction term lowered the AIC and BIC and thus further improved the fit of this model (Table 2-2, model III: AIC = 1202.38, BIC = 1344.23, ΔAIC = -428.30, ΔBIC = -433.28). As expected, the interaction between team boundary-buffering activities and team chronic job demand overload was positively and significantly related to team productive energy (Figure 21: γ = .28, SE = 06, p < .01), supporting Hypothesis 2. Furthermore, as illustrated in Figure 2-1, we visually inspected the shape of this interaction following a procedure outlined by Aiken and West (1991). To provide these graphs, the slopes of team boundary-buffering activities on team productive energy were plotted under the condition of high versus low team chronic job demand overload (using one standard deviation below and above the mean as reference points). A supplementing simple slope test proved that the slope of team boundary-buffering activities on team productive energy was positive and significant when team chronic job demand overload was high (γ = .40, SE = .12, p < .001) and non-significant when team chronic job demand overload was low (γ = .13, SE = .11, p = ns), adding further support for Hypothesis 2. Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance Figure 2-2 47 Interaction between Team Productive Energy and Team Chronic Job Demand Overload on Team Innovative Performance 5.0 Team productive energy 4.5 4.0 3.5 Team chronic job demand overload high 3.0 2.5 Team chronic job demand overload low 2.0 1.5 1.0 0.5 0.0 Low High Team boundary-buffering activities Mediation effect. Hypothesis 4 posited that team productive energy mediates the relationship between team boundary-buffering activities and team innovative performance. Prior research proposed the use of non-parametric bootstrapping to analyze such an indirect effect, because the distribution of an indirect effect does not meet the assumption of normality (due to the fact that an indirect effect is the product of the associated paths [Edwards & Lambert, 2007]). Technically, Mplus is not able to apply non-parametric bootstrapping in conjunction with the latent interaction technique (Klein & Moosbrugger, 2000). Thus, we utilized parametric bootstrapping by means of the moderated mediation procedure outlined by Preacher and Hayes (2007). We applied 10,000 resamples to test the indirect effect between team boundary-buffering activities and team innovative performance as mediated through team productive energy. We found a significant indirect effect (Table 2-3: effect size [a × b] = .08, SE = .05, p < .05, 95% bias corrected confidence intervals: CILower limit = .01, CIUpper limit= .22), supporting Hypothesis 4a. 48 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance Table 2-3 Conditional Indirect Effects via Team Productive Energy predicting Team Innovative Performance Moderator value Low chronic job demand overload, - 1 SD (-.47) Average chronic job demand, (.00) High chronic job demand overload, + 1 SD (.47) a Bootstrapped conditional indirect effect Indirect effect SE .05 .08 .11 .05 .05 .06 CI95%LL CI95%UL -.01 .01 .02 .19 .22 .27 N = 89 (Teams). CI95%LL = lower limit 95% confidence interval; CI95%UL = upper limit 95% confidence interval; bootstrap sample size = 10,000. Conditional indirect effect. Furthermore, to test Hypothesis 4b, we examined the conditional effect of chronic team job demand overload on the indirect effect of team boundary-buffering activities on innovative team performance (through the mediation of team productive energy). To do so, we used the moderated mediation procedure outlined by Preacher and Hayes (2007). The conditional effect is the value of the indirect effect conditioned on the values of the moderator, at one standard deviation above and below the mean. Table 2-3 shows the indirect effect with 10,000 nonparametric bootstrapped resamples conditional on team chronic job demand overload. The indirect effect was significant with high chronic team job demand overload (Table 2-3: effect size [a × b] = .11, SE = .06, p < .05, 95% bias corrected confidence intervals: CILower limit = .02, CIUpper limit = .27) but not significant with low team chronic job demand overload (Table 2-3: effect size [a × b] = .05, SE = .05, p = ns, 95% bias corrected confidence intervals: CILower limit = -0.01, CIUpper limit = .19). These findings support Hypothesis 4b. 2.5.4 Robustness Checks Following Becker’s (2005) advice, we reran all of the analyses excluding the control variables. The path weight of the interaction between team boundary-buffering activities and chronic team job demand overload remained nearly the same (β = .28, SE=.07, p < .01) while the effect of team productive energy on team innovative performance was slightly smaller (β = .36, SE = .20, p < .05); finally, the influence of team boundary-buffering activities on team productive energy (γ = .38, SE = .11, p < .05) and the indirect effect between team boundary-buffering activities and team innovative performance mediated through team productive energy were somewhat higher (effect size [a × b] = .09, SE = .05, p = .05, 95% bias corrected confidence intervals: CILower limit = Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 49 0.02, CIUpper limit = .23). However, this reanalysis did not change the conclusions of any hypothesized relationships. 2.6 Discussion 2.6.1 Summary and Theoretical Contribution In this paper, we have examined whether we can explain the link between team-boundary buffering activities and team innovative performance by using team productive energy as a mediator. The results of our study show that the mediation of team productive energy indirectly explains the positive link between team boundary-buffering activities and team innovative performance. Furthermore, we found that this relationship was increased under the condition of high chronic team job demand overload. Under the condition of low chronic team job overload, team boundary-buffering activities did not contribute to team productive energy and ultimately to team innovative performance. Our paper offers several important theoretical contributions. First, this study helps explain how and why team boundary-buffering activities and team innovative performance are related. To the best of our knowledge, no prior study has yet examined this relationship. Only one prior study has explored the relationship between team boundary-buffering activities and team performance (Faraj & Yan, 2009). Within a sample of software development teams, this study did not find a direct effect, nor did it find an indirect effect as mediated through psychological safety climate (Faraj & Yan, 2009). We extend this prior research by showing that team boundary-buffering activities positively influence team innovative performance through the mediation of team productive energy. Expanding the established functional, cognitive view on team boundary activities by a more person-centered, emotive approach, our study suggests that not only cognitive mechanisms explain the effect of team boundary-buffering activities on team innovative performance but also emotional and behavioral ones. Our study is the first to demonstrate that team boundary-buffering activities also have a positive effect on team innovative performance. Past research has only found a positive effect for team boundary-spanning activities (Ancona & Caldwell, 1992b; Hulsheger et al., 2009; Tushman, 1977; Tushman & Scanlan, 1981b). 50 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance Furthermore, past research has examined structural contingency factors of team boundary-buffering activities drawing upon an organizational design perspective (Faraj & Yan, 2009; Tushman & Nadler, 1978). This research found that task uncertainty positively moderates the effect of team boundary-buffering activities on psychological safety climate, but neither task uncertainty nor resource scarcity influenced the effect of boundary-buffering activities on team performance (Faraj & Yan, 2009). We extend this functional, cognitive approach of the organizational design perspective, referring to the more person-centered, emotive view of the JD-R model (Schaufeli & Taris, in press). Specifically, our study shows that a psychological factor (i.e., chronic team job demand overload) supports the effect of team boundary-buffering activities on team innovative performance. Applying the JD-R model in a broader sense, the results of our study suggest that the overall level of job demands might moderate the positive link between team-level job resources and positive work-related team outcomes. Second, our study expands literature on the JD-R model. Recently, work stemming from this field has incorporated the so-called coping hypothesis from the stress literature (Schaufeli & Taris, in press; Seers et al., 1983). This recent JD-R research found that a number of different job demands (such as workload, emotional demands, students’ behavioral misconduct, and dissonances) boost the effect of job resources (such as skill utilization, learning opportunities, autonomy, colleague support, leader support, performance feedback, participation in decision-making, career opportunities, job control, supervisor support, information, organizational climate, innovative teaching methods, appreciation, self-efficacy, and optimism) on task enjoyment, organizational commitment, and work engagement (Bakker et al., 2007; Bakker et al., 2010; Xanthopoulou et al., 2013). Theoretically, this literature suggests that job resources do not only buffer the negative effect of specific job demands. Rather, job resources become more effective under these circumstances because they help individuals to cope with high job demands. This argument is in line with the conservation of resources theory, (COR [Hobfoll, 1989]), which posits that resources by themselves only modestly affect positive well-being. However, referring to this theory, job resources only become salient when job demands are high. Our study is the first to empirically demonstrate this coping effect at the level of teams. Additionally, our study is one of the first to conceptualize the JD-R model with genuine team-level constructs. For example, two prior studies applied individual-level Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 51 constructs (e.g., emotional demands, autonomy, exhaustion, cynicism, and work engagement) with references to the individual level and then simply aggregated them to the team level (Bakker, Van Emmerik, & Van Riet, 2008b; Xanthopoulou et al., 2009). Furthermore, to account for the motivational mechanism of the JD-R model at the team level, prior work has used an individual-level work engagement scale and adapted its references to the level of teams (Torrente et al., 2012b). However, this scale has not demonstrated its discriminant validity in comparison with established constructs at the team level (Cronbach & Meehl, 1955; Torrente, Salanova, Llorens, & Schaufeli, 2012a). Hence, we contribute by using the genuine collective-level construct of team productive energy, which has been already been shown to be distinct from established team-level constructs, such as cohesion and collective efficacy (Cole et al., 2012). Third, our paper adds to the literature on productive energy. At the level of whole organizations, past research found that top management teams’ behavioral integration and transformational leadership climate increase productive energy (Raes et al., 2013; Walter & Bruch, 2010). At the level of teams, a prior study showed that transformational leadership can buffer negative effects of age/gender-based team faultines on team productive energy (Kunze & Bruch, 2010). Furthermore, past work demonstrated that productive energy is associated with positive outcomes, such as higher goal commitment and organizational commitment of employees (Cole et al., 2012), greater employee satisfaction and reduced turnover intention (Raes et al., 2013), and enhanced work performance (Cole et al., 2012). This paper contributes by adding team boundary-buffering activities as an antecedent and team innovative performance as a consequence of team productive energy. Last but not least, prior conceptual work on team innovation has argued that past research in this field has predominantly relied on laboratory studies (Nijstad & De Dreu, 2002; West, 2002). These laboratory studies have focused primarily on the behavioral activity of idea generation, neglecting other important activities of the innovation process, such as idea implementation (Nijstad & De Dreu, 2002; West, 2002). Consequently, Nijstad and De Dreu (2002) and West (2002) have called for the combination of these crucial activities of the innovation process and the study of them within the context of “real” teams. We have responded to these calls with two courses of action: First, we operationalized team innovative performance with a scale that comprises three major activities of the innovation process (idea generation, idea promotion, and idea implementation [Kanter, 1988; Janssen, 2001]). And second, we test- 52 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance ed our theoretical model within a field study, relying on “real” automotive R&D teams. 2.6.2 Practical Contribution This paper shows that team boundary-buffering activities are effective in maintaining a team’s productive energy and ultimately its innovative performance. Specific team boundary-spanning activities include filtering and evaluating external requests and showing helping behavior when external demands are placed on individual team members. Additionally, those activities comprise carefully communicating information that might cause insecurity and disturbance and clearly communicating to external stakeholders when team members feel overloaded with work. Finally, team boundary-buffering activities consist of declining external requests when they are not legitimate and setting clear priorities. Hence, organizations might want to systematically train their teams to show these activities. Furthermore, our study demonstrates that team boundary-buffering activities become even more effective when teams face high levels of chronic job demand overload. Nevertheless, in practice, it might be difficult to buffer the team boundaries in the face of chronic team job demand overload. We think that might be the case because these two constructs are very highly negatively correlated (as Table 2-1 shows). Thus, particularly when teams experience high levels of chronic job demand overload, it might be difficult for them to direct their energies toward disengaging from the environment. 2.6.3 Limitations and Future Research Our study has some limitations that offer opportunities for future research. First, in this paper, we have argued for a specific chain of effects between team boundary-buffering activities, team productive energy, and team innovative performance. However, our cross-sectional dataset does not allow us to draw any causal inferences. Nevertheless, the correlations in Table 2-1 point to the fact that, at least in our dataset, neither chronic team job demand overload can mediate the relationship between team boundarybuffering activities and team innovative performance nor can team boundary-buffering activities mediate the relationship between team productive energy and team innovative performance. Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance 53 Second, the activities of team boundary buffering might be more complex than our research model assumes. Although we theoretically advanced a unidirectional chain of relationships between team boundary-buffering activities and team productive energy, we cannot rule out a reciprocal relationship between these two constructs. Literature from the conservation of resources theory suggests that people at first have to invest resources in order to gain them again at later stages (Hobfoll, 1989). Hence, we admit that teams might have to partly commit their productive energy to keep up boundary-buffering activities in order to sustain their productive energy at later stages of the process. Future research could explore the potential reciprocal nature of this relationship using a cross-lagged panel design (Kenny, 2005). Third, the generalization of our findings is limited to the specific nature of the teams under study. We suggest that our findings are particularly relevant for teams that work in highly interconnected and project-oriented organizational settings, such as R&D teams or project teams. Generally, we suggest that our results are more applicable to teams executing knowledge-intense tasks, as compared to teams that perform manual tasks (Hollenbeck, Beersma, & Schouten, 2012). In this study, we focused on internal effects of team boundary-buffering activities. Future research could extend this view by simultaneously examining effects on external stakeholders. 2.6.4 Conclusion This study is one of the first to explore the underlying theoretical process that explains the consequences of team boundary-buffering activities on team innovative performance. We propose that past research has insufficiently studied the role of team boundary-buffering activities because it primarily used a functional, cognitive view. To complement this view, we apply a person-centered, emotional perspective. To do so, we introduce the idea of productive energy and show that this construct can explain the link between team boundary-buffering activities and team innovative performance. At the same time, drawing upon a job demands-resources framework, our study is one of the first to examine the so-called coping hypothesis at the level of teams. We demonstrate that the effect of a set of specific job resources (i.e. team boundary buffering) is especially enhanced when teams face higher levels of chronic job demand overload. 54 Study 1 – Linking Team Boundary-Buffering Activities and Innovative Performance Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 55 3 How Does Transformational Leadership Increase Team Productive Energy? The Role of Team Boundary-Spanning Activities and Diversity 3 3.1 Abstract Prior human energy research has found that transformational leadership (TFL) increases productive team energy. Team productive energy is the demonstration of positive affect, cognitive arousal, and agentic behavior among team members in their joint pursuit of organizationally salient objectives. In this paper, we examine whether team boundary-spanning activities mediate the positive link between TFL and team productive energy. Furthermore, we propose that demographic (age, gender, and educational level) diversity accentuates the relationship between transformational leadership and team boundary-spanning activities. We tested our moderated mediation model, based on multilevel structural equation modeling of data from 121 R&D teams, comprising 896 employees and 98 team leaders. Our results supported a full mediation of team boundary-spanning activities and partly supported the interaction between TFL and demographic diversity. Our study contributes to the emerging field of human energy in organizations by providing first insights into which mechanisms create collective energy in teams. Keywords: Transformational leadership, team productive energy, team boundary-spanning activities, diversity, demographic diversity 3 Earlier versions of this paper have been presented at the conference of the DGPs 2012 and the 73nd AOM Annual Meeting 2013. 56 Study 2 – How Does Transformational Leadership Increase Team Productive Ener- gy? 3.2 Introduction The topic of productive energy in organizations has received growing interest from scholars (Cole et al., 2012) as well as from practitioners (Bruch & Ghoshal, 2003). Productive energy is defined as experience and demonstration of positive affect, cognitive arousal, and agentic behavior among unit members in their joint pursuit of organizationally salient objectives (Cole et al., 2012). Recent research shows that productive energy is associated with positive outcomes such as higher goal commitment and organizational commitment of employees (Cole et al., 2012), more employee satisfaction and reduced turnover intention (Raes et al., 2013), and enhanced work performance (Cole et al., 2012). Until now, scholars have mainly explored antecedents of productive energy at the organizational level. This research has found that the behavioral integration of top management teams and the overall climate of transformational leadership (TFL) in organizations positively affect the productive energy climate in organizations (Raes et al., 2013). However, only one previous study examined productive energy on the level of teams (Kunze & Bruch, 2010). This study found that, besides buffering potential negative effects of diversity, TFL increases team productive energy. We suggest that TFL is an important antecedent of team productive energy because TFL is one of few constructs in organizational behavior that is able to explain how followers transcend their own self-interest in order to work toward the goals of a higher-level entity (Shamir, 1990). This higher-level goal attainment is also a distinct feature of the productive energy construct (Cole et al., 2012). Although Kunze and Bruch (2010) found that TFL increased team productive energy, they did not demonstrate by which mechanism this is achieved. To explain how TFL positively affects team productive energy, we examine team boundary-spanning activities as a mediator. Team boundary-spanning activities are defined as team actions through which teams reach out to their environment to obtain critical resources, information, and support (Ancona & Caldwell, 1992b). Following the team taxonomy of Marks, Mathieu, and Zaccaro (2001), team boundary-spanning activities can be described as an action process of system monitoring in which a team tracks its resources and environmental conditions as they are relevant to the team tasks. Extending literature on the motivational potential of resources to the level of teams (Schaufeli & Bakker, 2004), we build theory on how transformational leaders Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 57 increase team productive energy by acquiring additional external resources through team boundary-spanning activities. Furthermore, drawing from literature on homophily (McPherson, Smith-Lovin, & Cook, 2001), we assess whether the interplay between demographic (age, gender, and educational level) diversity and TFL influences team boundary-spanning activities and ultimately team productive energy. Prior research has yet only considered the role of job-related team diversity (functional background and tenure) on team boundary- spanning activities (Ancona & Caldwell, 1992a). We argue that, although demographic diversity has the potential problem of destabilizing social identification within the team, it likewise may increase the range of potential external stakeholders outside of team boundaries. Unchecked, the problems of demographic diversity prevail but, when teams experience transformational leadership, the potential of demographic diversity might increase TFL’s influence on team boundary-spanning activities and ultimately on team productive energy. By examining the mediating effect of team boundary-spanning activities and the moderating effect of demographic diversity, we offer three contributions to the literature. First, we build theory on how additional external resources increase team productive energy. Second, we bridge the internal and external perspective on the effectiveness of TFL teams. Third, we extend the literature on team boundary-spanning activities by exploring demographic diversity as a moderator. We develop hypotheses and test a multilevel structural equation model of data from 121 functional ongoing automotive R&D teams, comprising 896 employees and 98 team leaders. 3.3 Theoretical Background and Hypotheses Development 3.3.1 The Motivational Potential of Resources We refer to resources as those aspects of a job that are functional in achieving work goals, reducing job demands and their associated physiological and psychological costs, and, finally, stimulating personal growth, learning, and development (Demerouti et al., 2001). Several lines of research, for example the job characteristics theory (Hackman & Oldham, 1980), have recognized that resources have a motivational potential. The conservation of resources theory (Hobfoll, 2001) posits that human motivation is directed toward the building, preservation, and proliferation of resources. This theory states that individuals value resources in their own right or because they allow them to acquire or protect other valued resources. According to the job de- 58 Study 2 – How Does Transformational Leadership Increase Team Productive Ener- gy? mands-resources literature (Schaufeli & Bakker, 2004), resources are the antecedents of a motivational process. Thus, the presence and ability of resources inspires personal growth and increases motivation (Salanova et al., 2005). In the present paper, we extend this argument from the individual level to the level of teams. According to the team taxonomy of Marks, Mathieu, and Zaccaro (2001), productive energy is an emergent state of motivation and confidence building. As opposed to team processes, emergent states do not directly describe the social interaction among team members but the subsequent cognitive, motivational, and affective states of team interactions (Marks et al., 2001). Building on the input-processoutput (IPO) model of team research, Marks and colleagues (2001) suggest that emergent states may either act as an input or output of a process within the IPO model. In line with the circumplex model of affect (Russell, 1980), productive energy is a state that shares high levels of arousal and positive valence with affective states such as enthusiasm, excitement, happiness, or alertness, but it is directed toward the goals of an organization. Productive energy is closely related to motivation because it taps the potentiality of devoting joint efforts to a certain course of action (Cole et al., 2012). Nevertheless, members of teams with high productive energy will not take these actions when they assume that these efforts will not result in any consequences of importance (Vroom, 1995). 3.3.2 Team Boundary-Spanning Activities and Team Productive Energy We propose that team boundary-spanning activities increase team productive energy by providing additional resources from the environment outside of the team. We expect that teams that are able to capitalize on external resources build more team productive energy as compared to those that only capitalize on their internal resources. Productive energy manifests itself on a cognitive, emotional, and behavioral level (Cole et al., 2012). Team boundary-spanning activities positively influence all three of these sub-dimensions. Related to the cognitive dimension, team members gain additional external resources (e.g., information or knowledge) that help them to solve cognitive challenges at hand and execute their tasks successfully. In line with that argument, previous motivation literature on the individual level has found that the experience of competence (Ryan & Deci, 2000) and mastery (Sonnentag, Binnewies, & Mojza, 2008) is positively associated with individuals’ motivation. Previous job demands-resources literature Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 59 on the individual level has found that information and knowledge can act as motivating resources (Schaufeli & Taris, in press). On the level of teams, prior literature from a job demands-resources perspective has shown that feedback and successful coordination increase teams’ motivational state (Salanova et al., 2012). Related to the emotional dimension, team members gain additional resources (e.g., support from external stakeholders) that are important for their positive recognition within the organization. Supporting this argument, prior motivation literature has found that individuals’ feelings of relatedness are associated with motivation (Baumeister & Leary, 1995). On the individual level, a huge body of evidence from the job demands-resources literature has found a motivational effect of social support (e.g., Rich, Lepine, & Crawford, 2010; Sonnentag, Binnewies, & Mojza, 2010). In the same vein, prior job demands-resources literature on the level of teams has shown that a supportive climate is beneficial for teams’ motivational state (Salanova et al., 2012). Related to the behavioral dimension, team members acquire additional external resources (e.g. financial resources, time for projects) that enable teams to execute their tasks free of inference (Faraj & Yan, 2009). In line with that argument, prior research has found that individuals’ autonomy is related to their motivation (Hackman & Oldham, 1980). The motivational role of autonomy is supported by literature from the job demands-resources perspective on the level of individuals (Schaufeli, Bakker, & Van Rhenen, 2009) and teams (Salanova et al., 2005; Salanova et al., 2012). On the individual level, prior literature from the job demands-resources perspective has shown the motivational potential of financial resources (Schaufeli & Taris, in press). H1: Team boundary-spanning activities are positively related to team productive energy. 3.3.3 Transformational Leadership and Team Boundary-Spanning Activities Transformational leaders increase team boundary-spanning activities by influencing the team as a whole as well as the individual team members. First, transformational leaders act as boundary-spanning role models themselves (Pastor, Mayo, & Shamir, 2007). TFL research has shown that leaders who are considered transformational by their employees are more central within the informal organizational advice networks than their non-transformational counterparts (Balkundi, Kilduff, & Harrison, 2011; Bono & Anderson, 2005). Second, they align their team toward exceptional group goals. To achieve these exceptional goals, teams have to acquire additional resources 60 Study 2 – How Does Transformational Leadership Increase Team Productive Ener- gy? from external sources above and beyond their internal resources (Marrone, 2010). And third, they establish an overarching vision for the team that incorporates the use of team boundary-spanning activities. Besides collectively influencing the team as a whole, transformational leaders individually support their team members in spanning team boundaries. First, they influence the interpersonal self-concept of their team members such that the team members are able to build role-based relationships with stakeholders external to the team (Hogg, van Knippenberg, & Rast, 2012; Howell & Shamir, 2005). Second and third, they intellectually challenge their team members and, corresponding to the exceptional group goals, expect high performance from the individual team members in order to successfully span the team boundaries and acquire additional resources for the team. Team leaders possess better access to important stakeholders than team members. Consequentially, they use their access to acquire additional external resources for the team. Having said this, team members have a more fine-grained knowledge of the concrete tasks of a team. Members of teams that experience TFL tap into their own as well as their leaders’ networks to acquire the resources they need to contribute to exceptional team goals. With TFL, team leaders and members transcend their self-interest in order to work toward common team goals (Shamir, House, & Arthur, 1993) and best match their networks and task relevant knowledge to acquire the necessary external resources. In the absence of TFL, team members might use their personal networks to only promote their own goals (such as career improvement). H2: Transformational leadership is positively related to team boundary-spanning activities. 3.3.4 The Mediating Role of Team Boundary-Spanning Activities We expect that team boundary-spanning activities mediate the relationship between TFL and team productive energy. Two prior studies, one at the team level and one at the organizational level, showed that TFL raises productive energy (Kunze & Bruch, 2010; Walter & Bruch, 2010). However, the mechanism by which TFL increases productive energy is not yet clear. We suggest that, especially at the team boundaries, team members have the opportunity to capitalize on new social interactions as compared to within the team. Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 61 However, prior team research suggests that the impact of internal social team interactions is limited (Chung & Jackson, 2013; Oh et al., 2004). It showed that the strength of relationships among team members within a team has an inverted U-shaped influence on performance where, after a turning point of saturation, further strengthening these internal relationships diminishes team performance (Chung & Jackson, 2013; Oh et al., 2004). Strong internal relationships do not only lead to inner team satisfaction and social identification but also potentially to in-group favoritism and out-group deevaluation (Brewer, 1979). We expect that especially teams with a transformational leader utilize team boundary-spanning activities as a strategy to acquire additional resources, because these teams share exceptionally aligned group goals (Podsakoff, MacKenzie, & Fetter, 1993). H3: Team boundary-spanning activities mediate the positive relationship between transformational leadership and team productive energy. 3.3.5 The Moderating Role of Demographic Diversity We propose that teams’ demographic diversity accentuates TFL’s impact on team boundary-spanning activities. We suggest that teams that are capable of managing high demographic diversity within the team are able to establish relationships with a greater range of external stakeholders, based on a mutual perception of social similarity and social identity, as compared to teams with low demographic diversity. This point of view is supported by works of literature on organizational demography (Joshi, 2006) and homophily (see McPherson et al., 2001). In a seminal paper on organizational demography, Pfeffer (1985) proposed that common demographic characteristics (such as age, gender, and educational level) partly shape the perception of social similarity and social identification. For example, employees of the same age are more likely to have a similar life history, share a set of common live experiences, and be at a similar point in their life courses, thus jointly producing a feeling of shared social similarity and social identification between them (Pfeffer, 1985). Homophily is the principle that contact between similar people occurs at a higher rate than among dissimilar people (McPherson et al., 2001). Literature on homophily has found ample evidence that people tend to build their informal social networks based on demographic characteristics (McPherson et al., 2001). Within a team, demographic diversity has potentially harmful effects because it may decrease social identification with the team itself (Kearney & Gebert, 2009). Prior 62 Study 2 – How Does Transformational Leadership Increase Team Productive Ener- gy? TFL research has shown that, by advancing team members’ collective self-concept (Shamir et al., 1993; Howell & Shamir, 2005), transformational leaders buffer the negative effects of demographic diversity within the team that are related to the potential threat of team social identification (Kearney & Gebert, 2009; Kunze & Bruch, 2010; Shin & Zhou, 2003). H4: Demographic diversity moderates the relationship between transformational leadership and team boundary-spanning activities; the relationship is stronger with increased demographic diversity. 3.4 Methods 3.4.1 Data Collection We gathered data from the R&D division of a multinational automotive company through an online survey. The R&D division was situated at the company’s headquarters in Germany. Almost all participants’ first language was German. R&D teams are especially appropriate to the study of team boundary-spanning activities because they have to perform in a highly interconnected, project-based organizational context (Ancona & Caldwell, 1992a). During the data collection process, several actions were taken to ensure a high participation rate. The head of the R&D department sent a personalized e-mail to all employees working in the sub-units targeted by this study. This e-mail emphasized the importance of the study and encouraged all employees to take part. Furthermore, the head of the R&D department assured the confidentiality of all employees. At two and three weeks after the data collection had started, we sent emails to remind non-respondents to take part. Each team received a written feedback report with the team results after the data collection was finished. We also offered participation in a train-the-leader workshop for team leaders to enable them to discuss the results with their team members. To avoid a common source bias, we collected data on team productive energy and TFL, the dependent and the independent variable, from different sources (Podsakoff et al., 2003). Following Bell and Fisher (2012), we conceptualize team productive energy as a holistic property of a dynamic system rather than a property of specific team members. Hence, and in accordance with prior literature (Kunze & Bruch, 2010), we collected responses on productive energy at the level of the team Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 63 leaders. Furthermore, we collected responses on TFL from team members because they have the closest social proximity to their team leaders and are thus better suited to rate them regarding TFL than, for example, leaders’ direct supervisors (Kark, Shamir, & Chen, 2003). We also collected responses on team boundary-spanning activities at the level of the individual team members because team members are best suited to describe processes that take place within their team (Marrone, 2010). 3.4.2 Sample The original sample included 131 teams with responses from 108 team leaders and 906 team members. The overall response rate added up to 72.11% 4. Following the definition of a team from Salas, Dickinson, Converse, and Tannenbaum (1992), we excluded 10 teams from the analysis that comprised fewer than three persons, because we were explicitly urged to study at least triads as compared to smaller entities, such as dyads. To account for the missing data situation, we did not further reduce the dataset by matching the variables under study using a listwise deletion procedure. We will further explain our missing data approach in the analysis section. Our final sample comprised 121 teams, with responses from 102 team leaders and 896 team members. Most of the team leaders and team members in our final sample were male (team leaders: 96.08%, team members: 89.75%) and hold a university degree (team leaders: 94.12%, team members: 77.27%). On average, team leaders have been working for the company for 14.87 years (SD = 7.63 years) and team members for 12.64 years (SD = 9.33 years). Because of the data security policy of the company, we were merely able to collect categorical data for age. The average team leader was between 41 and 45 years old, and the average team member was between 36 and 40 years old. 3.4.3 Measures All answers were collected on a Likert-type scale ranging from (1) "strongly disagree" to (5) "strongly agree." Professional translators translated the items of the constructs to German following a double-blind back-translation procedure to guarantee semantic similarity with the English original (Schaffer & Riordan, 2003). 4 Team leaders: 83.97%, team members: 70.89% 64 Study 2 – How Does Transformational Leadership Increase Team Productive Ener- gy? Transformational leadership. At present, different instruments are available to measure transformational leadership (Bass & Avolio, 1995; Podsakoff, MacKenzie, Moorman, & Fetter, 1990). We decided to use the Transformational Leadership Inventory (TLI) (Podsakoff et al., 1993; Podsakoff et al., 1990) because prior research has faced difficulty replicating the factor structure of the most commonly used instrument, the Multifactor Leadership Inventory (MLQ, Bass & Avolio, 1995; Heinitz & Rowold, 2007), in a German-speaking context. The TLI, however, showed satisfactory results in a validation study of the German translation of the scale (Heinitz & Rowold, 2007). Also, the TLI taps into a slightly different range of transformational leadership behaviors from those of the MLQ. One dimension explicitly represents how leaders foster acceptance for group goals, which we regard as an important precondition of successfully acquiring resources outside the team. To the best of our knowledge, prior validation studies of the TFL construct exclusively tested the factor structure of TFL scales on the individual employee level (Bass & Avolio, 1995; Heinitz & Rowold, 2007; Podsakoff et al., 1990). However, Dyer, Hanges, and Hall (2005) point out that the equivalence between the individual and team level factor structure should be explicitly tested empirically to safely use the same factor structure on the team as on an individual level. Following Dyer, Hanges, and Hall (2005), we applied a multilevel confirmatory factor analysis (MCFA) to test the factor structure of the TLI (see Appendix: Figure 7-1). Concerning the criteria of Hu and Bentler (1999), the overall model attained a good fit (χ2 [409] = 964.72, p<.001, CFI = .95, TLI = .95, RMSEA = .04, SRMRwithin= .05, SRMRbetween= .13). At the level of teams, as on an individual level, the latent second-order TFL factor significantly explains all latent second-order dimensions except for the dimension of high performance expectations, which received mixed results. Although at the level of teams, the factor loading of high performance expectations exceeded the conventional cut-off value of .40, the second-order TFL factor did not significantly explain leaders’ high performance expectations. Nevertheless, we retained the dimension of high performance expectations in our team-level model because, as Podsakoff and colleagues (1990) have argued, based on an extensive literature review, high performance expectations are an essential part of leaders’ TFL behaviors, and prior studies also incorporated this dimension (e.g., Podsakoff et al., 1993; Podsakoff et al., 1990). Nevertheless, through a robustness check, we will test whether our proposed research model will also hold when this dimension is excluded from the team-level analysis. The TLI Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 65 showed very good reliability (Cronbach’s αindividual level = .94, Cronbach’s αteam level = .95). Team boundary-spanning activities. We measured team boundary-spanning activities with a four-item scale developed by Faraj and Yan (2009). These four items had the stem “To what extent does the team…” and continued (1) “encourage its members to solicit information and resources from elsewhere in and/or beyond the division,” (2) “encourage its members to try to influence important actors elsewhere in and/or beyond the division on behalf of the team and its work,” (3) “value team members for making use of their relationships with others on behalf of the team,” and (4) “depend upon information and resources actively solicited by team members, that is, information and resources beyond what comes through official channels?” We applied the same MCFA approach as described above (Dyer et al., 2005; 2 χ [5] = 25.38, p < .001, CFI = .96, TLI = .89, RMSEA = .07, SRMRwithin = .04, SRMRbetween = .04). The overall model revealed an acceptable fit except for the TLI value (Hu & Bentler, 1999). However, item (4), “To what extent does the team depend upon information and resources actively solicited by team members, that is, information and resources beyond what comes through official channels?” did not load significantly on the common factor for team boundary-spanning activities (standardized λinidividual-level = .01, SD = .09, p = ns standardized λteam-level = -.23, SD = .31, p = ns). Hence, we excluded the last item from the analysis and gained an excellent overall model fit (χ2[1] = .43, p = .51, CFI = 1.00, TLI = 1.01, RMSEA = .00, SRMRwithin = .00, SRMRbetween= .01). The scale on team boundary-spanning activities showed satisfactory reliability (Cronbach’s αindividual level = .76, Cronbach’s αteam level = .72). Team productive energy. We measured team productive energy with a scale developed by Cole and colleagues (2012). Team productive energy is a threedimensional reflective construct (Jarvis, MacKenzie, & Podsakoff, 2003) that measures three dimensions of a global entity of human energy within teams. Five items measure how the teams’ energy is perceived on a cognitive level (e.g., "My work group is ready to act at any given time."), five items measure how it is perceived on an emotional level (e.g., "People in my team feel enthusiastic about their jobs."), and four items measure how it is perceived on a behavioral level (e.g., “People in my work group go out of their way to ensure that the company succeeds.”). We applied a second-order confirmatory factor analysis to test the three-dimensional structure of the team productive energy construct. The overall model received a good fit (χ2[62]= 83.52, p = .21, CFI=.94,TLI = .93, RMSEA = .04, with a 90% confidence interval be- 66 Study 2 – How Does Transformational Leadership Increase Team Productive Ener- gy? tween .00 and .07). The reliability of the team productive energy scale was good (Cronbach’s αteam level = .81). Demographic diversity. We operationalized demographic diversity as age, gender, and educational level diversity and measured these variables separately with the heterogeneity index suggested by Blau (1977), because we refer to diversity as variety (Harrison & Klein, 2007). Team members had to classify themselves regarding age diversity into one of eight categories: 20 to 25 years (n = 14), 26 to 30 years (n = 127), 31 to 35 years (n = 178), 36 to 40 years (n = 150), 41 to 45 years (n = 168), 46 to 50 years (n = 136), 51 to 55 years (n = 69), and 56 to 65 years (n = 36). The 18 remaining respondents did not indicate their age. Age diversity ranged from .00 to .88 (M = .64, SD = .23), showing a good variation in the data. 788 team members were male, 80 were female, and 18 did not indicate their sex. Gender diversity ranged from .00 to .50 (M = .15, SD = .18), pointing to a rather low variation of gender. All respondents within our study shared a professional engineering background and had to classify themselves in terms of their educational level into one of seven categories: no formal degree (n = 2), only high school education (n = 20), vocational training (n = 17), technical college (n = 128), university of cooperative education (n = 16), university (of applied science) (n = 596), and doctorate (n = 77). Forty respondents did not indicate their level of education. Educational diversity ranged from .00 to .81 (M = .33, SD = .23), showing a low to medium variation of levels of education. Control variables. We added team size, team longevity, and team response rate as control variables to our model. Stewart (2006) argues that large teams have higher coordination costs and small teams fewer resources, conditions that could influence the team productive energy. We measured team size as the sum of team members (Ancona & Caldwell, 1992b). We included team longevity because Katz (1982) has shown that external and internal team communication diminishes as team longevity increases. We measured team longevity as the average time team members had been on the team (Kearney & Gebert, 2009). We included team response rate as a control variable to rule out differences in response rates as an alternative mechanism of explanation. We measured the team response rate as the ratio of the number of all team members to the number of members who participated in our study. Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 67 3.5 Analysis 3.5.1 Missing Data Analysis Researchers confronted with missing data cannot assume that that data is missing completely at random (MCAR, e.g., Maloney, Johnson, & Zellmer-Bruhn, 2010; Schafer & Graham, 2002). To take a conservative point of view, we assumed for the variables under study a mixed situation of missing at random (MAR) and not missing at random (NMAR, Schafer & Graham, 2002). For our analysis, we thus applied full maximumlikelihood estimation (Schafer & Graham, 2002). To attenuate the potential bias of the parameter estimations in a data situation of NMAR, we included gender, age, and educational level as auxiliary variables (Graham, 2003). Although we gathered these demographic characteristics as questionnaire items, they should be rather objective and do not introduce any further measurement error to the model. 3.5.2 Assessment of Team Properties and Measurement Model Prior to the analysis of our multilevel research model, we assessed whether the use of TFL and team boundary-spanning activities as team properties was justified (Klein & Kozlowski, 2000). We did not consider team productive energy for this analysis because we directly assessed it at the team level. First, we conducted F-tests to assess whether TFL and team boundary-spanning activities significantly explain variance between teams. That was the case for both TFL and team boundary-spanning activities (TFL: F [120,766] = 3.72, p < .001, team boundary-spanning activities: F [120,764] = 2.14, p < .001). Next, we determined within-group agreement for TFL and team boundary-spanning activities using rwg-values. For both constructs, median rwg-values exceeded the conventional cutoff value of .70 (James, Demaree, & Wolf, 1984, 1993) (TFL: median rwg = .97, team boundary-spanning activities: median rwg = .85). Finally, we examined intra-class correlation coefficients for TFL and team boundary-spanning activities (Bliese & Halverson, 1998) (TFL: ICC[1] = .26, ICC[2] = .73, team boundary-spanning activities: ICC[1] = .15, ICC[2] =.53). The ICC[1]s of TFL and team boundary-spanning activities exceeded the conventional cutoff value of .12, and only the ICC[2] of team boundary-spanning activities fell below the conventional cutoff value of .70 (Glick, 1985). Jointly, these statistics justify analyzing the data for TFL and team boundary-spanning activities at the team level. 68 Study 2 – How Does Transformational Leadership Increase Team Productive Ener- gy? After the evaluation of the team properties, we performed MCFAs to test the discriminant validity of the involved constructs. The fit of the measurement model was satisfactory (χ2 [77] = 302.28, p < .001, CFI = .93, TLI = .91, RMSEA = .06, SRMRwithin= .04, SRMRbetween= .11). Alternative models reached a significantly worse model fit. A one-factor model, with TFL, boundary-spanning activities, and team productive energy loading on the same factor 5, achieved a significantly worse model fit (χ2[81]= 585.12, p < .001, CFI = .85, TLI = .81, RMSEA = .08, SRMRwithin= .06, SRMRbetween= .17, Δχ2 = 282.20,ΔF= 4, p < .001). In addition, a two-factor model, with TFL and team boundary-spanning activities loading on the same factor2 (χ2[81]= 550.19, p < .001, CFI = .86, TLI = .82, RMSEA = .08, SRMRwithin= .06, SRMRbetween= .13, Δχ2 = 247.27, Δdf= 3, p < .001) and a two-factor model with team boundary-spanning activities and team productive energy loading on the same factor (χ2[80]= 326.81, p < .001, CFI = .93, TLI = .91, RMSEA = .06, SRMRwithin= .04, SRMRbetween= .17, Δχ2 = 23.88, Δdf= 2, p < .001) achieved significantly fit worse with the data. Jointly, these analyses show a satisfactory discriminate validity of our measurement model. 3.5.3 Multilevel SEM Mediation Multilevel structural equation modeling (SEM) can account for the contextual effect of team processes. A contextual effect exists when the between-level effect of two constructs is higher than the corresponding within-level effect (Preacher, Zyphur, & Zhang, 2010). In our study, we assessed whether a contextual effect between TFL and team boundary-spanning activities exists. Multilevel SEM enables us to examine the between- and within-level effect simultaneously (Preacher et al., 2010). Ordinary multilevel modeling analyzes the between-level effect by aggregating constructs to the higher level (Preacher et al., 2010), which produces biased estimates when the between- and within-level effects differ (Muthén, 1994). Also, multilevel SEM handles emergent team processes that predict outcomes from the bottom up on the higher level (Klein & Kozlowski, 2000). In the case of contextual effects, multilevel SEM mediation is superior to ordinary multilevel analysis (Ludtke et al., 2008; Preacher et al., 2011). We used full maximum-likelihood estimation with robust standard errors, as implemented in the software package Mplus, to account for the unbalanced group sizes of our data set (Muthén & Muthén, 1998-2007). 5 In this model, we forced the items of TFL and team boundary-spanning activities on an individual level to load on one factor. Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 69 3.6 Results 3.6.1 Descriptives Table 3-1 shows the descriptive statistics of the variables under study. The means, standard deviations, and zero correlations were simultaneously produced with full maximum-likelihood estimation in MSEM. Obtaining correlations within the traditional OLS regression framework would have required pairwise deletion of variables to account for the missing values. The OLS regression framework would also have required aggregating the individual-level data to obtain team-level correlation. Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 71 TFL and team boundary-spanning activities were more highly correlated at the team level (r = .84, p < .001) than at the individual level (r = .48, p < .001). This result is in line with the definition of a contextual effect in which the effect at the higher level is stronger than the corresponding effect at the individual level (Preacher et al., 2010). 3.6.2 Multilevel Analysis We tested the research model building on a procedure proposed by Preacher et al. (2010). First, as a necessary but not sufficient condition to fit the MSEM mediation model, we solely tested the within-level structure. In this step, we allowed the between-level constructs to covary freely. In the second step, we added the between-level structure of the model. After assuring an appropriate model fit for the MSEM mediation model, we entered the control variables in an additional step. The overall model fit for the different steps of our model-building process is shown in Table 3-2. The only-within model fit well with the data (model I: χ2[78] = 301.78, p < .001, CFI = .93, TLI = .91, RMSEA = .06, SRMRwithin = .04, SRMRbetween = .11), as did the MSEM mediation model with the included between-level model (model II: χ2[78] = 301.80, p < .001, CFI = .93, TLI = .91, RMSEA = .06, SRMRwithin = .04, SRMRbetween= .11, Δχ2 = 0.02, Δdf = 0). The addition of the control variables significantly decreased the model fit. However, it remained acceptable (model III: χ2[111] = 373.97, p < .001, CFI = .93, TLI = .91, RMSEA = .05, SRMRwithin = .03, SRMRbetween = .14, Δχ2 = 72.17, Δdf = 33, p < .001). 72 Study 2 – How Does Transformational Leadership Increase Team Productive Energy? Table 3-1 Variable Team level (N = 121) Controls 1. Team size 2. Team longevity 3. Team participation rate Predictors 4. Transformational leadership 5. Team boundary spanning 6. Age diversity 7. Gender diversity 8. Educational level diversity Dependent 9. Productive team energy a Variable Individual level (N = 896) 1. Transformational leadership b 2. Team boundary spanning c a Means, Standard Deviations, and Zero Order Correlations Mean SD 1 10.47 6.45 0.72 5.69 3.21 0.21 .54 -.07 -.25 3.45 3.38 0.64 0.15 0.33 0.44 0.41 0.23 0.18 0.23 -.16 -.31 .61 -.07 .23 4.05 0.36 -.14 Mean SD 1 3.41 3.35 0.68 0.75 (.94) .48 2 * *** ** 3 * - -.31 -.61 .47 .00 .35 * -.02 .14 .27 .15 .21 -.30 * * ** ** -.03 ** * 4 (.96) .84 -.32 .11 -.17 .38 *** ** ** 5 (.76) .07 -.09 .53 .53 6 *** *** .16 .40 .27 7 * *** ** .41 -.13 8 9 *** -.15 (.81) 2 *** (.72) N = 102; b N = 887; c N = 889. Full maximum likelihood estimation with robust standard errors; coefficient alpha reliabilities in the main diagonal in parentheses. *** p < .001; ** p < .01; * p < .05 two-tailed. Study 2 – How Does Transformational Leadership Increase Team Productive Energy? Table 3-2 Models I Only within model specified Within and between mediation model specified Within and between mediation III model specified with controlsa II a 73 Overall Multi-Level SEM Model Fit Comparison χ2 df CFI TLI RMSEA Δχ2 Δdf 301.78*** 78 0.93 0.91 .06 .04 .11 301.80*** 78 0.93 0.91 .06 .04 .11 0.02 0 373.97*** 111 0.93 0.91 .05 .03 .14 72.17*** 33 SRMRwithin SRMRbetween Including control variables team size, team longevity, team participation rate; all models include auxiliary variables gender, age, and education. ***p < .001. 74 Study 2 – How Does Transformational Leadership Increase Team Productive Energy? Figure 3-1 Multilevel SEM Model with Decomposed Between and Within Effects Vision I1 *** .88 (.06) Common Goals *** .98 (.08) *** .97 (.02) Role Modeling *** .91 (.03) Individualized Support Transformational Leadership *** .87 (.06) Intellectual Stimulation *** .83 (.08) I3 I2 *** *** .91 (.10) Cognitive .99 (.01) *** .76 (.08) Team Boundary- Spanning Activities *** .78 (.12) Team Productive Energy ** .93 (.32) Emotional *** .76 (.08) *** .56 (.09) .37 (.25) Behavioral Indirect effect: .73*(.43) High Performance Expectations Between level Within level Vision *** .87 (.01) Common Goals Full maximum likelihood estimation with robust standard errors; standardized path coefficients are reported. The values in the parentheses are standard errors. Effects of control variables (team size, team longevity, team participation rate, and transformational leadership) are not shown in the figure. *** .85 (.01) Role Modeling *** .81 (.02) Individual Support *** .64 (.03) Intellectual Stimulation Individual Perceptions of Transformational Leadership *** .67 (.02) High Performance Expectations *** .33 (.05) Individual Perceptions of Team Boundary-Spanning Activities *** .63 (.05) *** .58 (.04) *** *** .69 (.04) .63 (.05) I2 I3 *** p < .001, **p < .01 two-tailed. Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 75 3.6.3 Test of Hypotheses Main effects. Figure 3-1 depicts an overview of the tested relationships of our hypothesized research model controlling for the direct effect of TFL on team productive energy. Hypothesis 1 posited that team boundary-spanning activities increase team productive energy. The significant corresponding path weight in our mediation model supported that hypothesis (β = .93, SE = .32, p < .01). Hypothesis 2 suggested that TFL promotes team boundary-spanning activities. Also, the significant path weight confirmed Hypothesis 2 (γ = .78, SE = .12, p < .001). The direct effect of TFL on team productive energy becomes non-significant in the presence of team boundary-spanning activities (γ = -.36, SE = .37, p = ns). 6 Mediation analysis. Preacher et al. (2010) argued that neither non-parametric bootstrapping nor the stepwise approach by Baron and Kenny (1986) is applicable to test the mediational analysis in MSEM. Thus, we utilized the delta method (Sobel, 1982). The effect size of the indirect effect between TFL and team productive energy via team boundary-spanning activities was significant when controlling for TFL’s effect on team productive energy and thus confirmed Hypothesis 3 (effect size [a × b] = .72, SE = .35, < .05). 7 To check for common method bias between TFL and team boundary-spanning activities, we instrumented TFL with Ragins’s (1989) five-item leadership effectiveness scale as rated by the supervisors of the team leaders (Antonakis, Bendahan, Jacquart, & Lalive, 2010). The first-stage F statistic exceeded .10, indicating that the instrument is not weak (F = 11.42, df = 1, 111, p < .001, Stock & Yogo. 2005). The Wu-Hausman test (Hausman, 1978; Wu, 1973) was non-significant, indicating that the instrument is exogenous (F = 1.78, df = 1, 110, p =ns). The reanalysis with the included instrument did not change the conclusion of any hypothesized relationships. TFL’s influence on team boundary-spanning activities even increased slightly (standardized γ = .82, SE = .12, p < .001). 7 Ludtke et al. (2011) showed that the MSEM approach is more reliable than the traditional aggregation approach as long as the higher-level sample size exceeds 50 units. Nevertheless, MSEM has a tendency to overestimate contextual effects (Ludtke et al., 2011). Thus, in a post-hoc analysis, we recalculated the model with OLS regression based upon aggregated team-level data. As with the MSEM approach, we confirmed the hypotheses, although standardized estimates were smaller (H1: β = .51, SE = .07, p < .001; H2: β = .30, SE .12, p<.05; H3: effect size [a × b] = .15, SE .06, p < .05). 6 76 Study 2 – How Does Transformational Leadership Increase Team Productive Energy? Table 3-3 Variable OLS Regression Results for Simple Moderation Team boundary-spanning activitiesa Model 1a Model 1b Controls Team size -.12 (.01) Team longevity -.13 (.01) Team participation rate .10 (.18) Predictors Transformational leader.49 *** (.03) ship (TFL) Team boundary-spanning activities Age diversity .15 (.21) Educational level diversity -.07 (.21) Gender diversity .01 (.17) TFL × age diversity TFL × gender diversity TFL × educational level diversity 2 .53 R .22*** ΔR2 -.09 -.10 .10 .59 *** Team productive energyb Model 2a (.01) (.01) (.17) .08 -.04 -.01 (.01) (.01) (.19) .08 -.03 -.01 (.01) (.01) (.19) (.03) .10 (.05) .11 (.05) (.05) .31 (.23) (.22) (.18) -.24 .11 .02 .00 .05 (.24) (.22) (.18) (.05) (.04) .05 (.04) .31 .03 -.08 .02 .44 .03 -.22 *** * .62 .10** Model 2b (.20) (.20) (.16) (.03) (.03) -.24 .11 .02 * (.04) .46 .18*** * (.05) .46 .00 a N = 121 teams. b N = 102 teams. Standardized regression coefficients are reported. The values in the parentheses are the standard errors. * p < .05; ** p < .01; *** p < .001 two-tailed. The moderating role of demographic diversity. According to Bauer, Preacher, and Gil (2006), multilevel moderated mediation is not well suited for analysis with structural equation modeling. Thus, we tested Hypothesis 4 within an OLS regression framework using aggregated team-level data and a listwise deletion missing data procedure. The variance inflation factors of all regression analyses were below 2.5, indicating that multicollinearity was not a problem in our analyses with the aggregated level data. After centering TFL and the demographic diversity characteristics (age, gender, and educational level diversity), we tested the simple interactions of the demographic diversity characteristics with TFL on team boundary-spanning activities following the approach of Aiken and West (1991). The results of the moderation analysis are shown in Table 3-3. In line with Hypotheses 4, the interaction between TFL and age diversity was positively and significantly related to team boundary-spanning activities (model 1b: β = .44, SE = 03, p < .001). Not in line with Hypotheses 4, the interaction between TFL and gender diversity was not significantly related to team boundary- Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 77 spanning activities (model 1b: β = .03, SE = 03, p = ns). Furthermore, contrary to Hypothesis 4, the interaction of TFL and educational diversity was negatively and significantly related to team boundary-spanning activities (model 1b: β = -.22, SE= .04, p < .05). To rule out a second-stage interaction as an explanation mechanism, after centering team boundary-spanning activities, we tested the interaction between age, gender, and educational diversity on the relationship between team boundary-spanning activities and team productive energy. None of these interactions gained significance (model 2b: age diversity β = .00, SE = 05, p = ns, gender diversity β = .05, SE = .04, p= ns, educational diversity β = .05, SE = .04, p = ns). In the case of age and educational diversity, these results indicate a first-stage moderated mediation (Edwards & Lambert, 2007). Following Aiken and West (1991), Figures 3-2 and 3-3 illustrate the shape of the first-stage interactions of age and educational diversity: To provide the graphs, the regression lines of TFL on team boundary-spanning activities were plotted under the condition of high versus low age-respective educational diversity (using one SD below and above the mean as a reference point). We found that the slope of TFL’s effect on team boundary-spanning activities becomes steeper with high age diversity (figure 2a: β = .94, SE = .04, p < .001) than with low age diversity (β = .25, SE = .04, p < .05). In contrast, we found that the slope of TFL’s effect on team boundary-spanning activities becomes steeper with low educational diversity (figure 2b: β = .82, SE = .04, p < .001) than with high educational diversity (β = .37, SE = .04, p < .05). To further test our results, we used the moderated mediation procedure outlined by Preacher and Hayes (2007). With this procedure, we examined the conditional effect, which is the value of the indirect effect conditioned on the values of the moderator, of TFL on teams’ productive energy (through the mediation of team boundary spanning) at three values of age respective educational diversity: the mean, one standard deviation above the mean, and one standard deviation below the mean. Table 3-4 shows the indirect effect, with 10,000 non-parametric bootstrapped resamples, conditional on age and educational diversity. The indirect effect was greater with high age diversity (95% bias corrected confidence intervals: CILower limit = .07, CIUpper limit = .37) than with low age diversity (CILower limit = .03, CIUpper limit = .29). However, the indirect effect was 78 Study 2 – How Does Transformational Leadership Increase Team Productive Energy? greater with low educational diversity (CILower limit = .05, CIUpper limit = .39) than with high educational diversity (CILower limit = .06, CIUpper limit = .26). 8,9 Figure 3-2 Interaction between Transformational Leadership and Age Diversity on Team Boundary-Spanning Activities Team boundary spannning activities 5.0 4.5 4.0 3.5 3.0 Age diversity high 2.5 Age diversity low 2.0 1.5 1.0 0.5 0.0 Low High Transformational leadership 8 Following Becker’s (2005) advice, we reran all of analyses excluding the control variables. This reanalysis did not change the conclusions of any hypothesized relationships. 9 Finally, we reran our all analyses, excluding the team level TFL dimension of high performance expectation because this did not significantly load on the TFL factor. Likewise, this reanalysis did not change the conclusions of any hypothesized relationships. Study 2 – How Does Transformational Leadership Increase Team Productive Energy? Figure 3-3 79 Interaction between Transformational Leadership and Educational Diversity on Team Boundary-Spanning Activities Team boundary spannning activities 5.0 4.5 4.0 3.5 Educational level diversity high 3.0 2.5 Educational level diversity low 2.0 1.5 1.0 0.5 0.0 Low High Transformational leadership Table 3-4 Conditional Indirect Effects via Team Boundary-Spanning Activities predicting Team Productive Energy Moderator value Low age diversity, - 1 SD (-.21) Average age diversity (.00) High age diversity, + 1 SD (.21) Low educational level diversity, - 1 SD (-.23) Average educational level diversity (.00) High educational level diversity, + 1 SD (.23) a Bootstrapped conditional indirect effect CI 95% CI 95% Indirect effect SE .12 .16 .21 .17 .15 .13 .06 .06 .07 .08 .06 .05 LL .03 .06 .07 .05 .06 .06 UL .29 .29 .37 .39 .29 .26 N = 102 teams. 95 % bias corrected confidence intervals; lower limit = LL, upper limit = UL; bootstrap resamples: 10,000 80 Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 3.6.4 Additional Exploratory Analysis To further explain the non-significant interaction between TFL and gender diversity, respective of the negative interaction between TFL and educational diversity, we posthoc tested a multilevel SEM model with added main effects of the ratio of female team members and team members’ average educational level on team boundary-spanning activities. We found that the ratio of female team members had no effect on team boundary-spanning activities (standardized γ = .27, SE = .19, p = ns), whereas the average education level had a significant positive effect on team boundary-spanning activities (standardized γ = .61, SE = .16, p < .001). The overall model fit of the multilevel SEM model remained acceptable (χ2[160] = 454.47, p < .001, CFI = .92, TLI=.91, RMSEA = .05, SRMRwithin= .04, SRMRbetween= .14). 3.7 Discussion 3.7.1 Summary and Theoretical Implications In this study, we have sought to shed light on the question of how TFL positively affects team productive energy. We proposed that TFL enables team members to span the team boundaries and gather external resources for their team. As hypothesized, the results showed that team boundary-spanning activities fully mediate the positive relationship between TFL and team productive energy. The results of the facilitating role of demographic diversity on the link between TFL and team productive energy were mixed. TFL’s positive interaction with age diversity on team boundary-spanning activities was in line with the positive hypothesized effect, whereas the interaction with gender diversity showed no effect, and the interaction with educational level diversity even showed a negative effect on team boundary-spanning activities. Our research extends existing human energy research by developing a more detailed understanding of how productive energy emerges at the level of teams. In a broader sense, our findings bridge the knowledge of how human energy emerges on the individual and collective levels. On the individual level, energy research has found that personal resources (e.g., recovery, self-efficacy, and optimism [Sonnentag, Mojza, Demerouti, & Bakker, 2012; Xanthopoulou, Bakker, Demerouti, & Schaufeli, 2009]) as well as job-related resources (e.g., autonomy, performance feedback, and opportunities for professional development [Xanthopoulou et al., 2009]) contribute to team members’ individual feelings of energy. On the level of social networks, prior research Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 81 has found that social interactions within companies can energize individuals (Cross, Baker, & Parker, 2003). Bridging the individual and the collective level, the results of our study show that social interaction across team boundaries can raise the collective human energy within teams. Our findings also expand our understanding of how TFL functions on the level of teams and show the important role of team boundary-spanning activities in explaining TFL’s effectiveness in teams. Prior TFL research at the team level solely investigated internal team processes (e.g., Bass et al., 2003; Kark & Shamir, 2002; Kark et al., 2003). The results of this study suggest that the internal perspective of the explanation mechanism should be complemented by a perspective that focuses on how transformational leaders enable their team members to reach beyond their team boundaries. Our findings also add to the boundary-spanning literature by incorporating a homophily perspective. Our findings only partly supported the view that demographic diversity increases the range of reachable external stakeholders when facilitated by TFL. We found this effect only in the situation of age diversity. This finding regarding age diversity is in line with prior evidence from the homophily (McPherson et al., 2001; Reagans, 2011) and diversity literatures (Kearney & Gebert, 2009; Kunze & Bruch, 2010; Shin & Zhou, 2003). However, there might be different reasons for why we did not find the expected effect for gender and educational level diversity. Prior homophily research has found that, within organizations, men tend to build their informal networks more strongly according to the homophily principle than women (Ibarra, 1992). However, within our post-hoc analyses, we did not find a negative relationship between the ratio of female team members and team boundary-spanning activities. The most difficult finding to explain is the negative interaction between TFL and educational level diversity. However, one reason why TFL does not increase the impact of educational level diversity might be that higher levels of education also cover lower levels of education. For example, an employee with a doctoral degree also holds Master’s and Bachelor’s degrees as well as a school-leaving certificate for university entry. Thus, building on the homophily principle, employees with higher educational levels can also connect with employees with less formal education but not vice versa (McPherson et al., 2001). Given that the average educational level in our sample was very high (77.27% of the team members in our sample held a university degree), this high degree of educational level can be expected to already facilitate boundaryspanning activities by itself. This interpretation is supported by a positive relationship 82 Study 2 – How Does Transformational Leadership Increase Team Productive Energy? between average educational level and team boundary-spanning activities in our posthoc analysis. However, diversity of educational level might weaken transformational leaders’ ability to create an overarching vision that embraces the self-concepts of all team members, regardless of their educational level. All in all, our findings show that the impact of different dimensions of demographic diversity on team boundaryspanning activities is more complex than previously assumed. Last but not least, we methodologically expand the management literature by applying multilevel structural equation modeling (MSEM, Preacher et al., 2010). We show that the effect between TFL and boundary-spanning activities was higher at the team level than at the individual level, indicating a contextual effect (Preacher et al., 2010). This contextual effect supports the idea that the research question under study is a collective phenomenon (Ludtke et al., 2008). Muthén (1994) showed that, in the presence of a contextual effect, the aggregation approach to higher-level data conflated the lower- and higher-level data. Thus, as shown by several methodologists (e.g., Ludtke et al., 2008; Preacher et al., 2011), in the present case, the MSEM approach is less biased than the traditional aggregation approach. 3.7.2 Practical Implications Companies might want to monitor and strengthen TFL and team productive energy. Particularly in the context of project-based organizations (Faraj & Yan, 2009), individual managers could think of how they may enable their teams to acquire external resources across team boundaries. Furthermore, managers could act as boundaryspanning role models themselves and utilize their own as well as the social network of their teams to jointly capitalize on these network opportunities. Furthermore, to benefit from positive effects of age diversity on team boundary-spanning activities, managers might want to strengthen a collective sense of team identity (e.g., by reinforcing a common narrative of the team’s past challenges and successes). 3.7.3 Limitations and Future Research Besides the need to extend our knowledge on how human energy manifests on the level of teams, our study has several limitations that offer opportunities for future research. The generalizability of our findings is limited due to the specific nature of our sample of R&D teams with highly educated, mostly male team members. Collaboration with other external stakeholders and gathering of resources (e.g. information, Study 2 – How Does Transformational Leadership Increase Team Productive Energy? 83 equipment, and support) are especially critical in this organizational context. Within a less knowledge-driven and more standardized team context, team boundary spanning might be less requisite. Furthermore, a more demographically diverse composition within and among teams would facilitate a deeper examination of the impact of demographic diversity on team boundary spanning and its boundary conditions. We gathered our dependent, productive team energy and the independent variable TFL from different sources to prevent a common method bias (Podsakoff et al., 2003). However, we collected the data from TFL, team boundary spanning, and demographic diversity from the same source. To check for potential common method bias in the relationship between TFL and boundary spanning, we instrumented TFL with a variable from a different source following a procedure outlined by Antonakis et al. (2010). This approach derived the same hypothesized conclusions. Regarding the interaction between TFL and demographic diversity, Siemsen, Roth, and Oliveira (2010) showed that interaction effects as a matter of principle cannot be artifacts of common method variance. Thus, we assume that common method variance is not a severe problem in our analyses. Although we have proposed a certain sequence of the constructs within our model, we cannot draw any causal conclusions due to the cross-sectional nature of our data. Thus, future research should empirically assess the potential reversed causality between productive team energy and team boundary spanning. This might be realized with a cross-lagged-panel design or a nonrecursive framework with instrumental variables (Antonakis et al., 2010). In a strictly methodological sense, only an experimental design would enable us to draw any causal conclusions of the relationship between team boundary spanning and productive team energy. 3.7.4 Conclusion In this study, we hypothesized that transformational leadership (TFL) enables team boundary-spanning activities which, in turn, increase team productive energy. Accordingly, we showed that team boundary-spanning activities largely explain the positive influence of transformational leadership on team productive energy. Furthermore, we expected that the effect of TFL on team boundary-spanning activities would be more pronounced in teams with high demographic diversity because transformational leaders may buffer potentially harmful effects. At the same time, we expected that, based 84 Study 2 – How Does Transformational Leadership Increase Team Productive Energy? on a perception of social similarity, teams with high demographic diversity are better able to reach a great variety of external stakeholders. We confirmed this facilitating effect only for age diversity and not for educational and gender diversity. Our study advances knowledge on antecedents of team productive energy. 85 4 Are High-Performance Work Systems Always Beneficial? The Limiting Interaction with Employees’ Social Network Building10 4.1 Abstract Past research has found ample evidence that high-performance work systems (HPWSs) positively affect organizational performance (Combs, Liu, Hall, & Ketchen, 2006). However, this research has scarcely considered absenteeism as a focal outcome of interest. Drawing upon social exchange theory (Blau, 1964) and the literature on positive social interactions (Heaphy & Dutton, 2008), we develop a theoretical model for why HPWSs may have beneficial and detrimental effects on organizational-level absenteeism. Using a multi-source study with time-lagged field data, comprising 161 organizations with 15,401 employees, we found full support for our hypothesized model. Our paper challenges the assumption that HPWSs are always beneficial. However, it suggests that their effect on absenteeism depends on employees’ network building. Keywords: absenteeism, cross-level interaction, high-performance work systems, network building initiative, time-lagged data 10 An earlier version of this paper has been accepted for the 74nd AOM Annual Meeting 2014. 86 Study 3 – Are High-Performance Work Systems Always Beneficial? 4.2 Introduction A huge body of strategic HRM literature points to evidence that high-performance work systems (HPWSs) are positively related to organizational performance (Combs et al., 2006). Although neither conceptual (e.g., Lawler, 1992; Levine, 1995; Pfeffer, 1998) nor empirical efforts (e.g., Arthur, 1994; Huselid, 1995) have reached a strict definition of what an HPWS is, there is general agreement that it includes rigorous selection procedures, high levels of training, merit-based promotions, skill-based pay, group-based rewards, cross-functional and cross-trained teams, grievance procedures, information sharing, and internal participatory mechanisms (Datta, Guthrie, & Wright, 2005). Past research has shown that the use of HPWSs is associated with numerous positive organizational-level outcomes, such as higher worker productivity (Arthur, 1994; Datta et al., 2005), improved manufacturing quality (Datta et al., 2005; MacDuffie, 1995), greater firm innovation (Chang, Gong, Way, & Jia, 2013), enhanced firm growth (Patel, Messersmith, & Lepak, 2013), and superior financial performance (C. J. Collins & Clark, 2003; Huselid, 1995). However, past HPWS research has relatively scarcely studied absenteeism as a focal outcome of interest (Kehoe & Wright, 2013; Zatzick & Iverson, 2011). The majority of this research proposes that, overall, HPWSs reduce organizational-level absenteeism (Guthrie, Flood, Liu, & MacCurtain, 2009; Ramsay, Scholarios, & Harley, 2000; Way, Lepak, Fay, & Thacker, 2010; Zhou et al., 2005). However, prior research suggests that there might be a “dark side” of HPWSs that limits the beneficial influence on organization absenteeism. For example, Wood, Van Veldhoven, Croon, and de Menezes (2012) found that HPWSs indirectly encourage organizational-level absenteeism through increased levels of stressful emotions, whereas they did not find such a harmful effect on financial performance and workers’ productivity. Accordingly, Jensen, Patel, and Messersmith (2013) showed that HPWSs can increase employee anxiety, role overload, and turnover intention, particularly when job control is low. The lack of research explaining these inconsistent findings is remarkable, given that absenteeism causes annual costs of millions of dollars for organizations and society as a whole (Dalton & Mesch, 1991; Mason & Griffin, 2003). A recent national survey of HR professionals in Great Britain revealed that the median yearly direct costs of absences amounted to approximately $1,000 per employee (CIPD, 2013). However, in addition to these direct costs, absenteeism causes significant indirect costs related to Study 3 – Are High-Performance Work Systems Always Beneficial? 87 replacing absent employees and delaying schedules through the loss of work hours (Dansereau, Alutto, & Markham, 1978). In this paper, we will put forward a theoretical model for why HPWSs may have both beneficial and detrimental effects on organizational-level absenteeism: Contrasting arguments from social exchange theory (Blau, 1964) with literature on positive social interactions (Heaphy & Dutton, 2008), this paper puts forward the idea that an HPWS may have the unintended effect of detrimentally interacting with employees’ network building initiative. Network building initiative is a behavior that aims at proactively influencing others within social interactions to realize self-determined objectives (Thompson, 2005). It emerges discretely at the individual employee level in a voluntary way. Our central argument is that when employees tend to build few social networks on their own initiative, HPWSs help to reduce organizational-level absenteeism by providing employees with a supportive social structure from the top down (Evans & Davis, 2005). On the contrary, when employees proactively build strong social networks on their own, HPWSs rather impair their bottom-up initiatives and increase organizational-level absenteeism by demanding additional extra-role behavior (Bolino, Klotz, Turnley, & Harvey, 2013; Van Dyne & Ellis, 2004). Our paper offers three main theoretical contributions. First, it contributes to the literature on HPWSs. A large body of research demonstrates that HPWSs positively affect various dimensions of organizational performance (Combs et al., 2006). In this paper, we challenge the implicit assumption that HPWSs are always beneficial by considering boundary conditions of the link between HPWSs and organizational-level absenteeism. Furthermore, Jiang, Takeuchi, and Lepak (2013) suggest that future crosslevel studies would do well to not only consider the top-down effect of HPWSs on outcomes at lower levels but also the bottom-up effects of aggregated lower-level variables on outcomes at the unit level. We contribute to this literature by exploring the cross-level interaction between HPWSs and the bottom-up effect of employees’ ability to build social networks on organizational-level absenteeism. Second, our paper contributes to the absenteeism literature. Rentsch and Steel (2003) point out that – as compared to research at the individual level – absenteeism research at the unit level is particularly rare and deserves additional research attention. More specifically, past research focused on the level of groups and work units, but almost no research has considered absenteeism at the organizational level (see [Markham, 1985] for an exception). For this reason, Rentsch and Steel (2003) call for a more fine-grained examination of contextual characteristics of absenteeism at higher 88 Study 3 – Are High-Performance Work Systems Always Beneficial? levels. Accordingly, Harrison and Martocchio (1998) urge that more research is needed to better understand the organizational context of absenteeism. Responding to these calls, we examine how HPWSs and employees’ network building initiative are related to organizational-level absenteeism. Third, this paper contributes to the literature of positive organizational scholarship. Heaphy and Dutton (2008, p. 156) propose that future research ought not to exclusively study positive social interactions at the individual level but also “address questions about people’s larger relational landscape.” Accordingly, Cameron et al. (2003) emphasize that proving effects at one level of analysis does not necessarily mean that the effects exist at another. Based on this observation, the authors suggest that future research should specifically explore whether positive dynamics at the individual level also reproduce themselves at higher levels, such as that of entire organizations. We contribute to this literature by exploring how organizational-level absenteeism is mitigated by a behavior that induces positive social interactions: employees’ network building initiative. 4.3 Theory and Hypotheses Development 4.3.1 Why Are High-Performance Work Systems Effective? Drawing upon prior conceptual work, we consider an HPWS as an organization’s strategy for intentionally managing the organization-employee relationship (Tsui, Pearce, Porter, & Tripoli, 1997). Firms adopt an HPWS when their employees’ job roles are difficult to define, tasks are complex, and short-term efforts are difficult to evaluate (Sun, Aryee, & Law, 2007). By applying an HPWS, firms aim to encourage their employees to engage in a long-term employment relationship, in which they flexibly adjust their work roles in response to varying tasks, invest in firm-specific knowledge and skills, and voluntarily show extra-role behavior (Tsui et al., 1997). Extra-role behavior refers to activities that lie beyond the scope of a formal job description (Organ, 1988). The so-called relational perspective on HPWSs uses social exchange theory (Blau, 1964) to explain why HPWSs positively affect employees’ attitudes and behaviors (Sun et al., 2007). This perspective assumes that the organization-employee relationship is built upon the premises of interdependency, mutuality, and reciprocity (Sun et al., 2007). Grounded on the norm of reciprocity (Gouldner, 1960), the relational per- Study 3 – Are High-Performance Work Systems Always Beneficial? 89 spective posits that employees reciprocate in ways akin to how they are treated by their organization. When organizations appreciate employees’ contributions and demonstrate concern about their positive well-being by investing in HR practices, employees are expected to reciprocate by exerting positive work attitudes and behaviors toward the organization (Jiang et al., 2013). Supporting this theoretical argument, prior empirical work found that the link between HPWSs and organizational performance was partly mediated by the quality of social exchange (Takeuchi, Lepak, Wang, & Takeuchi, 2007). Furthermore, numerous studies have affirmed that HPWSs increase several positive attitudes (e.g., higher organizational commitment and job satisfaction) and invoked behaviors (e.g., lower turnover and increased extra-role behaviors; [Jiang et al., 2013; Messersmith, Patel, & Lepak, 2011; Sun et al., 2007)]. However, the above-mentioned logic of social exchange proposes that these positive work attitudes and behaviors might not be as discretionary as they appear at first glance, because they are linked with certain inducements and expectations by the organization (Hom et al., 2009; Tsui et al., 1997). Exploring the idea that extra-role behavior may lose its relatively voluntary nature, Van Dyne and Ellis (2004, p. 181) developed a conceptual model of job creep, which occurs when “employees feel ongoing pressure to do more than the requirements of their jobs”. The authors suggest that, when extra-role behaviors are performed regularly, tasks that were formerly considered beyond the scope of their job requirements gradually become part of employees’ ordinary and expected obligations (Van Dyne & Ellis, 2004). They suggest that employees start feeling exhausted, cynical, frustrated, and angry when exposed to job creep. Ultimately, job creep causes psychological resistance because it reduces employees’ personal control and their ability to voluntarily decide how they will engage in extra-role behavior. Supporting this idea, past research has found that employees’ perceptions of the utilization of HPWSs predicted their anxiety, role overload, and turnover intentions when employees were unable to exercise job control (Jensen et al., 2013). This prior conceptual and empirical work suggests that the influence of an HPWS on employees’ positive attitudes and behaviors may be moderated by employees’ degree of job control and their ability to voluntarily decide on their extra-role behavior. However, this line of research has not considered the possible cross-level nature of an interaction between an HPWS’s unit-level effects and the effect of individual employee behaviors that detrimentally influence outcomes at the unit level. We suggest that such an effect is not unlikely, because the beneficial effects of an HWPS, in terms of providing social structures and support for employees, may depend on the 90 Study 3 – Are High-Performance Work Systems Always Beneficial? extent to which employees have already provided such opportunities for themselves. In the following, we will first theorize why employees’ network building initiatives reduce organizational-level absenteeism from the bottom up (Kozlowski & Klein, 2000). Second, we will explain why an HPWS may lose its advantage and even harm organizational-level absenteeism when employees build rich social networks on their own initiative. 4.3.2 Employees’ Network Building Initiative and Organizational-Level Absenteeism Contrary to HPWSs, employees’ network building initiative emerges at the individual level. We suggest that employees’ network building initiative may reduce organizational-level absenteeism through at least three mechanisms. First, it strengthens individual employees’ positive well-being (Heaphy & Dutton, 2008). Second, it promotes individual employees’ ability to cope with work stress (Cohen & Wills, 1985). And third, by initiating social interaction between employees, even across boundaries that exist between distal organizational units, it contributes to employees’ social support networks and the evolution of a shared absence culture (Rentsch & Steel, 2003). Past work has characterized absence culture as “the beliefs and practices influencing the totality of absences – their frequency and duration – as they currently occur within an employee group or organization (that is, forming a characteristic pattern)” (ChadwickJones, Nicholson, & Brown, 1982, p. 7). At the individual level of analysis, the absenteeism literature proposes two distinct theoretical mechanisms for why employees choose to be absent from work (Johns, 1997). The first explanation posits that employees are voluntarily absent because they aim to avoid an aversive work situation (Harrison & Martocchio, 1998). The second explanation suggests that employees are involuntarily absent because they experience high levels of work stress (Darr & Johns, 2008). Both points of view are supported by extensive empirical evidence (Darr & Johns, 2008; Hackett, 1989). We propose that employees’ network building initiative enhances positive well-being and reduces work stress because it initiates positive social interactions. Following Heaphy and Dutton (2008, p. 139), positive social interactions are characterized “by the pursuit of rewarding and desired outcomes”. Past empirical research has shown that positive social interactions predict positive well-being and reduce stress, even when controlling for psychological diseases and health-related behaviors such as diet, exercise, and smoking (Seeman & McEwen, Study 3 – Are High-Performance Work Systems Always Beneficial? 91 1996; Uchino, Holt-Lunstad, Uno, & Flinders, 2001). Additionally, physiological research points to evidence that positive social interactions increase beneficial cardiovascular, immune, and neuroendocrine responses (Heaphy & Dutton, 2008). First, cardiovascular studies demonstrate that positive social interactions are significantly associated with lower heart rates (e.g., Evans & Steptoe, 2001; Undén, Orth-Gomér, & Elofsson, 1991) and that – under stress – co-worker support lowers employees’ blood pressure (Karlin, Brondolo, & Schwartz, 2003). Second, research on immune responses has accumulated a huge body of evidence that positive social interactions can strengthen the immune system (Kiecolt-Glaser, McGuire, Robles, & Glaser, 2002). Last but not least, neuroendocrine research has found that workers with high social support have healthier patterns of the “stress” hormone cortisol compared to those with low social support (Schnorpfeil et al., 2003). Furthermore, this research shows that social interactions increase the level of the hormone oxytocin (Zak, Kurzban, & Matzner, 2004). Oxytocin has been proposed to be related to mechanisms of trust and reciprocity (Heaphy & Dutton, 2008). All in all, we suggest that this evidence supports the argument that employees’ social network building initiative induces positive social interactions, which in turn positively affect well-being and work stress. At the unit level, conceptual research on absenteeism proposes that the opportunity for social interaction reinforces the evolution of a shared absence culture (Rentsch & Steel, 2003). The concept of an absence culture refers to absence-related behavioral patterns that are shared among organizational members who possess a common organizational understanding of what is appropriate (Johns & Nicholson, 1982). When employees build strong social networks within their organization, they have richer social support networks available to them (Uchino, 2004). Although network building initiative emerges bottom-up from the individual level of analysis, it contributes to a shared absence culture by providing an opportunity for social interaction and an exchange of resources among employees (Rentsch & Steel, 2003). Empirically, cross-level research on absenteeism supports the idea that employees adjust their absenteeism behavior to the underlying norms of their social context. This cross-level work on absenteeism empirically demonstrates that the concept of absence culture is capable of explaining a variability in individual-level employee absences that goes beyond what can be explained by individual-level constructs (Gellatly, 1995; Markham & McKee, 1995; Mathieu & Kohler, 1990). These studies operationalize an absence culture as individuals’ aggregated group-level absence rates (Mathieu & Kohler, 1990). Furthermore, absenteeism research at the group and workunit level provides evidence that group positive affective tone and aggregated attitudes 92 Study 3 – Are High-Performance Work Systems Always Beneficial? (e.g., job satisfaction and organizational commitment) are negatively related to absenteeism at the group and work-unit level (Dineen, Noe, Shaw, Duffy, & Wiethoff, 2007; George, 1990; Hausknecht, Hiller, & Vance, 2008; Mason & Griffin, 2003). However, past research has not directly examined the relationship between employees’ network building initiative and absenteeism. In a qualitative review, Porter and Steers (1973) stated that social interactions between employees are among the most influential forces within organizations. They go on to say that these social interactions support and reinforce socialization within an organization and that their absence may conversely result in employees’ serious alienation from their workplace. Accordingly, Waters and Roach (1971) demonstrated that satisfaction with co-workers is negatively related to absenteeism, whereas Hogan and Hogan (1989) found that high levels of social insensitivity and hostility are positively related to absence rates. H1: Employees’ network building initiative is negatively related to organizationallevel absenteeism. 4.3.3 The Interaction of High-Performance Work Systems and Employees’ Network Building Initiative We propose that, when employees tend to build few social networks on their own initiative, HPWSs help in reducing organizational-level absenteeism from the top down by providing employees with a supportive social structure (Evans & Davis, 2005). On the other hand, when employees proactively build strong social networks on their own, HPWSs rather impair their bottom-up initiative and increase organizational-level absenteeism by demanding additional extra-role behavior (Bolino et al., 2013; Van Dyne & Ellis, 2004). Our argument builds on the idea that a social structure increases opportunity for social interactions (Evans & Davis, 2005). In turn, social interactions enable positive social interactions (Heaphy & Dutton, 2008). Furthermore, drawing upon the norm of reciprocity (Gouldner, 1960) and previous empirical work (C. J. Collins & Smith, 2006; Nahapiet & Ghoshal, 1998), we propose that an HPWS facilitates a social climate of cooperation, trust, and a shared language among employees, which increases the likelihood that employees will experience their social interactions as “positive”. In addition, an HWPS encourages exchange of resources among employees at the unit level and, therefore, the creation of stronger social ties and richer support networks, Study 3 – Are High-Performance Work Systems Always Beneficial? 93 which reduce organizational-level absenteeism (Rentsch & Steel, 2003; Sun et al., 2007). We propose that, when employees build few social networks on their own initiative, they are aware of the fact that they greatly benefit from the social structure. Thus, we expect them to feel explicitly obligated to reciprocate to the organization (Blau, 1964). Hence, they will demonstrate considerable amounts of extra-role behavior. However, when employees show strong network building on their own initiative, an HPWS will not positively influence – and might even impair – organizational-level absenteeism. Hence, many aspects of this social structure do not add any value for those employees; it hinders rather than helps, because it partly absorbs these employees’ time and energy. Accordingly, they might feel less obligated to reciprocate to the organization because they know that those aspects of an HPWS’s social structure that aim to facilitate social networks do not provide a benefit for them. Nevertheless, we do not hold that employees who proactively build social networks on their own do not need the opportunity for social interactions and a cooperative and trustful social climate. However, we do suggest that these employees are less dependent on an HPWS and the corresponding social structure (Evans & Davis, 2005). Furthermore, employees who proactively build strong social networks on their own might already regard this activity as a voluntarily form of extra-role behavior. When organizations expect additional extra-role behavior (Tsui et al., 1997), employees with high network building initiative might regard this demand as a pressure. Bolino, Turnley, Gilstrap, and Suazo (2010) introduced the construct of citizenship pressure to explain situations in which employees feel pressured to exhibit extra-role behaviors. The authors demonstrated that citizenship pressure is related to work-family conflict, work-leisure conflict, job stress, and intentions to quit. In line with this argument, Vigoda-Gadot (2006) uses the concept of compulsory citizenship behaviors to describe a situation in which extra-role behavior loses its voluntary nature and supervisors or other powerful individuals increase employees’ workloads beyond their job descriptions. Empirically, Vigoda-Gadot (2006) showed that compulsory citizenship behaviors are positively related to job stress, organizational politics, intentions to quit, negligent behavior, and burnout. We propose that both citizenship pressure and compulsory citizenship behaviors contribute to both voluntary and involuntary absenteeism. Additionally, when employees already show high levels of self-initiated network building behavior, an HPWS may push employees to show additional initiative extra- 94 Study 3 – Are High-Performance Work Systems Always Beneficial? role behaviors, which might lead to role overload. In line with this argument, Bolino and Turnley (2005) showed that high overall levels of individual initiative (which includes behaviors such as coming to work early or staying late, working at home, rearranging personal plans because of work, and taking on special projects) was positively associated with role overload, work-family conflict, and job stress. H2: High-performance work systems and employees’ network building initiative positively interact in the following way: High-performance work systems are negatively related to organizational-level absenteeism when employees’ network building initiative is low. They are positively related to organizational-level absenteeism when employees’ network building initiative is high. 4.4 Method Section 4.4.1 Sample For our study, we collected data in collaboration with a German-based benchmarking agency. To participate, these organizations had to be located in Germany and not have more than 5,000 employees. In exchange for their participation, they obtained a written benchmarking report. Overall, we contacted 179 companies, out of which 16 provided insufficient data, resulting in an organizational-level response rate of 90% (N= 161). The incorporated businesses were active in a range of industries, including production (27%), wholesale (6%) and retail (7%) trade, service (55%), and finance (5%). On average, these companies employed 275 employees (SD = 607). To avoid common source and method effects (Podsakoff et al., 2003), we gathered data from five different sources by means of three different methods. We surveyed three unique groups of employees with an IT-based questionnaire, interviewed firms’ key HR representatives via telephone, and made use of firms’ archival HR data. Akin to standard employee surveys and other prior studies (Kunze, Boehm, & Bruch, 2013; Kunze, de Jong, & Bruch, in press), participating firms sent a standardized email invitation to all of their employees briefly describing the study’s purpose. The email contained a link to a Web-based survey hosted by an independent IT company. Overall, 15,401 employees voluntarily participated in the survey, resulting in a withinorganization response rate of 61% (SD = 23.9). Participants had a mean age of 37 years (SD = 10.5), included more males (59%) than females (41%), and had on average worked 9 years for their organization (SD = 8.5). Study 3 – Are High-Performance Work Systems Always Beneficial? 95 A Web-based algorithm randomly assigned participants to one of four versions of the employee survey. In our study, we used only three of the four versions, which were each answered by a randomly selected 25% of employees from each firm. With these three unique data sources, we collected responses on employees’ network building initiative (survey 1), job satisfaction and organizational commitment (survey 2), and positive affective climate (survey 3). Furthermore, the key HR representative of each firm responded to questions on HPWSs and provided information on firm size and industry affiliation. The absenteeism data was directly imported from the companies’ archival HR records. 4.4.2 Measures Unless otherwise noted, we collected the answers of our measures on a Likert-type scale ranging from (1) “strongly disagree” to (5) “strongly agree”. High-performance work systems (α = .72). We used a scale developed by Datta and colleagues (2005) comprised of 18 high-performance human resource practices, based on the work of Guthrie (2001) and Huselid (1995). These practices address, for example, the extent to which organizations provide high levels of training and information sharing, participatory mechanisms, grievance procedures, group-based rewards, rigorous selection procedures, skill-based pay, and internal merit-based promotions. Key HR representatives were asked to provide estimates of the proportion (0100%) of employees covered by each of these HR practices. The mean of these individual practices represented a firm’s overall HPWS score. Because there was only a single respondent per company, no aggregation statistics were necessary. Network building initiative (α = .84). Ferris and colleagues (2005) developed and validated a self-report network building measure (which they name “network ability”) as one dimension of political skill. Following Thompson (2005), we used only the network building dimension and adopted a four-item scale to assess the extent to which employees develop and use networks of people to exercise influence at work (i.e., “I have developed a large network of colleagues and associates at work whom I can call on for support when I really need to get things done”; “at work, I know a lot of important people and am well connected”; “I am good at using my connections and network to make things happen at work”; “I spend a lot of time and effort at work networking with others”). The items were averaged and aggregated to the organizational level, which was justified by satisfactory aggregation statistics (ICC1 = .09; p < .001; ICC2 = .75; median rwg= .71). 96 Study 3 – Are High-Performance Work Systems Always Beneficial? Absenteeism. In a time-based review of the absenteeism literature, Harrison and Martocchio (1998) proposed that time frames between four months and one year are particularly applicable to determine effects of job-related attitudes and social context on absenteeism. We thus measured absenteeism as the average days of absence per employee within six months after the survey began using the firms’ archival HR data. Controls. Becker and Huselid (2006) argued that prior strategic HRM research has frequently fell short in being able to rule out alternative explanations and thus correctly specify their research models in an unbiased manner. We aim to avoid this drawback by rigorously controlling for those variables that have been, to the best of our knowledge, studied in prior absenteeism research at the unit level. First, we included organization size as a control variable because past research has found that it is related to absenteeism (Ingham, 1970) and larger firms may have more elaborate HR practices in place than smaller ones (Jackson & Schuler, 1995). Size was the natural logarithm of an organization’s number of employees (e.g., Datta et al., 2005; Huselid, 1995). Second, we controlled for organizational age, in years, because past research suggests that HR practices advance over time (Guthrie, 2001). Third, we entered industry affiliation as a control because prior research has proposed that it systematically explains variance in absenteeism (Harrison & Martocchio, 1998). The firms in our dataset were active in one of five industry sectors (i.e., manufacturing, wholesale and retail trade, service, and finance). We controlled for these industries by entering corresponding dummy variables. Information on organizational size and industry affiliation was provided by the firms’ key HR representatives. Third, prior unit-level and group studies have found that aggregated attitudes (e.g., job satisfaction, organizational commitment (Hausknecht et al., 2008]) and work group climate (e.g., positive affective tone [George, 1990]) are related to absenteeism. We controlled for aggregated job satisfaction with a five-item scale following Judge, Parker, Colbert, Heller, and Ilies (2001), for aggregated organizational commitment with a six-item scale by Hausknecht and colleagues (2008), and for positive affective tone with a five-item scale from Van Katwyk, Specter, Fox, and Kelloway’s (2000) Job-Related Affective Well-Being Scale with adjusted reference to the organizational level. Job satisfaction and organizational commitment were assessed with a Likert-type scale ranging from (1) “strongly disagree” to (7) “strongly agree”. Finally, past research at the group and individual levels has found that prior absenteeism was among the strongest predictors of present absenteeism (Breaugh, 1981; Keller, 1983; Mathieu & Kohler, 1990). We Study 3 – Are High-Performance Work Systems Always Beneficial? 97 controlled for past absenteeism using the archival data of the average days of absence per employee within the 12 months prior to the study. 98 Study 3 – Are High-Performance Work Systems Always Benefi- cial? Table 4-1 Means, Standard Deviations, and Correlations among Study Variables 1 2 3 4 5 6 Variable Absenteeism (subsequent 6 months) Absenteeism (prior 12 months) Organizational commitment Job satisfaction Positive affective climate Employees' network building iniative 7 High-performance work systems 8 Organizational sizea Organiztional age 9 10 Industry dummy (production) 11 Industry dummy (trade, wholesale) 12 Industry dummy (service) 13 Industry dummy (finance) a 1 2 3 4 5 M 3.47 SD 2.45 5.51 3.52 4.98 .58 -.13 -.05 5.26 .50 -.20 ** -.27 *** .77 *** 3.40 .37 -.23 ** -.25 ** .59 *** .69 *** 3.44 .33 -.35 *** -.21 ** .44 *** .40 *** .48 *** 55.08 14.92 -.32 *** -.21 ** .18 * .25 ** .32 *** 6 7 8 9 10 11 12 .67 *** 1.71 .23 .13 .06 39.80 35.19 .15 .16 * .27 .44 .07 .07 .06 .23 .08 .55 .50 .05 .22 .11 .12 .11 .00 -.03 -.20 * -.24 ** -.12 -.18 * .01 -.14 -.20 * -.04 -.06 .09 .01 -.09 -.03 -.07 -.10 -.14 -.12 * -.04 .17 * .14 .12 .07 .05 -.03 .04 * -.01 .03 .02 -.03 -.07 -.02 N = 161 (organizations); Natural log of the number of employees * p < .05 ** p < .01 *** p < .001 (two-tailed) .10 .28 *** -.09 .01 -.22 ** .32 ** .03 -.27 ** .08 -.15 -.67 *** -.27 ** -.14 -.06 .20 ** Study 3 – Are High-Performance Work Systems Always Beneficial 99 4.5 Results Table 4-1 shows the means, standard deviations, and correlations for the study’s variables. The bivariate correlations show that absenteeism was negatively related to several study variables and controls: employees’ network building initiative (r = -.35, p < .001), HPWSs (r = .32, p < .001), job satisfaction (r = -.20, p < .01), and positive affective tone (r = -.23, p < .01). The only variable under study that was positively associated with absenteeism was prior absenteeism (r = .67, p <.001). 4.5.1 Hypotheses Testing We applied stepwise regression techniques for moderation analyses following a procedure outlined by Aiken and West (1991). In all of these models, variance inflation factors were below 4, indicating that multicollinearity was not a serious problem. All independent variables were z-standardized prior to analysis. The results are presented in Table 4-2. Hypothesis 1 posited that employees’ network building initiative is positively related to organizational-level absenteeism. First, in Model 1, we entered only the control variables as predictors of absenteeism. Second, in Model 2, we added employees’ network building initiative and HPWSs. HPWSs did not show a significant relationship (B = -.25, SE = .15, ns) in the presence of the further independent variables. Employees’ network building initiative was significantly related to absenteeism (B = -.50, SE =.14, p < .01), providing support for Hypothesis 1. Hypothesis 2 posited an interaction between HPWSs and employees’ network building initiative on organizational-level absenteeism. In Model 3, we further entered the interaction term of HPWSs and employees’ network building initiative. This interaction term was significantly related to absenteeism (B = .51, SE = .12, p < .001), in line with Hypothesis 2. 100 Study 3 – Are High-Performance Work Systems Always Beneficial? Table 4-2 Results of Hierarchical Regression Analysis Study 3 – Are High-Performance Work Systems Always Beneficial? 101 Figure 4-1 illustrates a graphical plot that we performed to further inspect this interaction. As the graph shows, the slope of HPWS rises when employees’ network building initiative was low (-1 SD) and falls when their network building initiative was high (+1 SD), supporting Hypothesis 2. Furthermore, a one-sided simple slope test revealed that the slopes for both conditions were significant: When employees showed low network building initiative, an HPWS was negatively associated with absenteeism (B = -.75, SE =.17, p<.001); however, when they showed high networking network building initiative, an HPWS was marginally positively related with absenteeism (B=.28, SE =.18, p<.10). Figure 4-1 Interaction between High-Performance Work Systems and Employees’ Network Building Initiative Organizatonal-level absenteeism 5.0 4.5 4.0 3.5 Network building initiative high 3.0 2.5 Network building initiative low 2.0 1.5 1.0 0.5 0.0 Low High High-performance work systems 4.5.2 Robustness Check To further inspect the robustness of our results, we ran an alternative model excluding all insignificant control variables. The main effect of employees’ network building initiative was somewhat larger (B = -.79, SE = .18, p < .001), the interaction between HPWS and employees’ network building initiative somewhat smaller (B = .35, SE = .17, p < .05); however, differently from the research model including controls, HPWSs 102 Study 3 – Are High-Performance Work Systems Always Beneficial? had a significant main effect on organizational-level absenteeism (B =-.56, SE =.18, p<.01). The reanalysis did not change the conclusion of our two hypotheses, which indicates that our results were not biased by impotent controls (Becker, 2005). 4.6 Discussion Strategic HRM literature has advanced a significant body of evidence that HPWSs positively affect organizational performance (Combs et al., 2006). However, this research revealed inconsistent results regarding the effectiveness of HPWSs on organizational-level absenteeism (Ramsay et al., 2000; Wood et al., 2012). In this paper, drawing upon social exchange theory (Blau, 1964) and literature on positive social interactions (Heaphy & Dutton, 2008), we have sought to develop a theoretical model on why an HPWS may have both beneficial and detrimental effects on organizationallevel absenteeism. Empirically, we found that, when employees build few social networks of their own initiative, an HPWS has a beneficial effect on organizational-level absenteeism. At the same time, when employees proactively build strong social networks, an HPWS may have a detrimental effect. 4.6.1 Theoretical Contribution This research offers a number of important theoretical contributions. First, it contributes to the strategic HRM literature. In this paper, we challenge the assumption that an HPWS is always beneficial. There is an enormous amount of research showing positive consequences of HPWSs (Combs et al., 2006; Jiang, Lepak, Hu, & Baer, 2012). A recent meta-analysis revealed that various bundles of high-performance work practices have moderate positive effects on operational performance and financial performance and moderate negative effects on voluntary turnover (Jiang et al., 2012). On the other hand, smaller number of studies show negative effects of HPWSs. Jensen et al. (2013), for example, demonstrated that employees’ perception of the utilization of HPWSs predicted employees’ anxiety, role overload, and turnover intentions when employees were unable to exercise job control. Accordingly, Kroon and colleagues (2009) found that HPWSs are positively related to employees’ work demands, which in turn predict employees’ emotional exhaustion. This evolving line of research challenges the dominant logic that an HPWS always has positive effects. Our paper contributes to this burgeoning literature by demonstrating that an HPWS may indeed have a detrimental effect on organizational-level absenteeism, conditional on whether employees already build strong social networks on their own initiative. Study 3 – Are High-Performance Work Systems Always Beneficial? 103 Furthermore, in recent years, strategic HRM research has moved from exploring outcomes of HPWSs to investigating mediation mechanisms and cross-level effects that might explain HPWSs’ effectiveness. This line of research proposes that the effectiveness of an HPWS is based on mechanisms of social exchange (C. J. Collins & Clark, 2003; Sun et al., 2007; Takeuchi et al., 2007), relational coordination (Gittell, Seidner, & Wimbush, 2010), positive social climates (C. J. Collins & Smith, 2006), and intellectual capital (Jiang et al., 2012). Our study theoretically extends prior literature from a social exchange perspective (Blau, 1964) by confronting this social exchange logic and its assumption of reciprocity (Gouldner, 1960) with the more wellbeing-focused literature of positive social interactions (Heaphy & Dutton, 2008). Our study is among the first in the field of strategic HRM research to test the cross-level effect of an individual-level property (i.e., network building initiative) that moderates the effect of an organizational-level property (i.e., HPWSs) on an organizational-level outcome (i.e., absenteeism). Prior cross-level studies have, for example, investigated how the mediating role of organizational climate (concern for employee climate) mediates the cross-level relationship between establishment-level HPWSs and individuallevel job satisfaction and affective commitment (Takeuchi, Chen, & Lepak, 2009) or the cross-level link between management-rated HPWSs at the branch level and employee-rated HPWSs at the individual level (Liao, Toya, Lepak, & Hong, 2009). To the best of our knowledge, Aryee, Walumbwa, Seidu, and Otaye (2012) and Nishii, Lepak, and Schneider (2008) are the only other studies that have explored a bottom-up effect on higher-level outcomes. Aryee et al. (2012) found that individual aggregated service performance predicted unit-level market performance after examining the cross-level influence of HPWSs on individual service performance through individuals’ experiences of HR systems and shared service climate. At the individual level of analysis, Nishii et al. (2008) showed that the specific attributions employees make about the reasons why HR systems are in place can influence employees’ attitudes (e.g., job satisfaction and affective commitment) toward these systems. The aggregated employee attitudes were positively related to aggregate organizational citizenship behaviors and customer satisfaction at the unit level of analysis. Our study extends these prior cross-level studies by showing that the bottom-up interaction of employees’ network building with HPWSs can seriously affect organizational-level absenteeism. Future strategic HRM research should explore whether other – in and of themselves – beneficial proactive behaviors at the individual level, such as personal initiative (Frese, Garst, & Fay, 2007), may detrimentally interact with the – in and of itself – beneficial effect of firms’ HPWSs on further organizational performance outcomes. 104 Study 3 – Are High-Performance Work Systems Always Beneficial? Second, this paper contributes to the absenteeism literature. Absenteeism is usually examined at the individual level of analysis because it is individuals who behave and decide to be absent from work; hence, many theorized reasons for absenteeism reflect characteristics of persons, such as attitudes and dispositions (Harrison & Martocchio, 1998). However, scholars find growing evidence that conceptualizing absenteeism as a collective construct at higher levels, such as the group or work unit, also provides unique insights concerning its antecedents and associations (Dineen et al., 2007; Markham, 1985; Mason & Griffin, 2003; Rentsch & Steel, 2003). Theoretically, past absenteeism research has used the concept of absence culture to explain why unit-levels factors may explain variability in absence rates (Rentsch & Steel, 2003). George (1990) suggests that unit-level absenteeism theory should not replace individual-level theory. Accordingly, Rentsch & Steel (2003) point out that each level of analysis demands distinctive conceptual work, although related predictions may apply across different levels. Empirically, cross-level research on absenteeism supports the idea that employees adjust their absenteeism behavior to the underlying norms of their social context (Dineen et al., 2007; George, 1990; Hausknecht et al., 2008; Mason & Griffin, 2003). This paper is one of the first to explore how an HPWS, as a bundle of various HR practices, influences absenteeism at the organizational level of analysis. Prior research has primarily examined specific absenteeism-related HR practices, typically at the individual level of analysis. This line of research examined, for example, how certain work schedules, such as shift work and flexible working hours, and organizational control policies influence individuals' decisions to be absent from work (Harrison & Martocchio, 1998). This prior work demonstrated that shift work was related to higher levels of individual absences (Farrell & Stamm, 1988) and that flexible working hours were regularly associated with lower absenteeism (e.g., Dalton & Mesch, 1991). Furthermore, research on organizational control policies showed mixed results. HR practices based on transactional reward and punishment structures were found to reduce some forms of absenteeism but induce others (Harrison & Martocchio, 1998). For instance, Schlotzhauer and Rosse (1985) showed that a positive reinforcement system diminished absenteeism. Other studies illustrate that punishment mechanisms for specific types of absences tend to stir up others (e.g., Miners, Moore, Champoux, & Martocchio, 1994). However, a recent meta-analysis on HR practices revealed that, in general, bundles of various HR practices are more effective than individual HR practices (Combs et al., 2006). Nevertheless, when controlling for prior organizational- Study 3 – Are High-Performance Work Systems Always Beneficial? 105 level absenteeism, we did not find any additional main effect of HPWSs on organizational-level absenteeism in this study. 4.6.2 Practical Contribution Overall, all variables in our research model explained 66% of the variability in organizational-level absenteeism. This is a relatively high percentage, when compared to alternative outcomes in previous strategic HRM studies. To the best of our knowledge, prior strategic HRM research has not explained more than 50% of the variability in distal organizational outcomes, such as voluntary turnover (e.g., Guthrie [2001]: 20%, Huselid [1995]: 39%), productivity (e.g., Datta [2005]: 47%, Guthrie [2001]: 30%, Huselid [1995]: 50%), or financial performance (e.g., C. J. Collins and Clark [2003]: 15-17%, C. J. Collins and Smith [2006]: 24-29%, Huselid [1995]: 12-17%). The explanatory power of our research model underlines the practical significance of our findings. From a managerial point of view, the results of our study are not merely statistically significant but also practically meaningful. Drawing upon previous research from the strategic HRM field (e.g., Datta et al., 2005; Huselid, 1995), the regression results in Table 4-1 can be interpreted as follows: With all other variables held constant, a one-standard-deviation increase in employees’ network building initiative is related to an average annual decrease in absenteeism of 4.38 days per employee (Model 2). The subsequent simple slope test may be understood as: When employees’ network building initiative is low, a one-standard-deviation increase in HPWSs is associated with an average annual decrease in absenteeism of 1.4 days per employee. On the other hand, when employees’ network building initiative is high, a one-standard-deviation increase in HPWSs is associated with an average annual upturn in absenteeism of 0.8 days per employee. Hence, managers are well advised to recognize this potential detrimental interaction between an HPWS and employees’ network building initiative. Nevertheless, we found that (aside from prior organizational-level absenteeism) employees’ network building initiative was the greatest predictor of organizational-level absenteeism. What is more, past research has demonstrated that network building initiative is positively related to proactive personality (Thompson, 2005). In light of this result, firms might do well to assess their job candidates in terms of this personality trait in their selection process. Furthermore, our research suggests that moderate levels of HPWSs and net- 106 Study 3 – Are High-Performance Work Systems Always Beneficial? work building initiative might even partly substitute for each other by providing employees with a functioning social structure. 4.6.3 Limitations This study is not without limitations, and further research is needed to refine and expand our work in important ways. First, we depended solely on one key informant from HR, contacted via telephone, to respond to our HPWS measure. Past literature has raised the concern that depending on a single respondent may undermine the reliability of the reported HR practice effects because it imposes serious measurement error on the analysis (Gerhart, Wright, McMahan, & Snell, 2000). Huselid and Becker (2000) replied that, when single respondents are key informants and HPWS measures correspond to relatively objective attributes (e.g., percentage of the workforce covered by regular employee surveys), the estimated effects of HR practices in large-scale multi-industry studies, such as ours, should not be severely biased. Another point of concern might be that our independent variables partly depend on cross-sectional data. However, we gathered the archival data of organizational-level absenteeism, our dependent variable, over the subsequent six months; furthermore, the records of prior absenteeism were collected from the 12 months before the data collection. Nevertheless, several independent variables, namely HPWSs, employees’ network building initiative, and other control variables were measured at the same time. Prior theory and empirical work suggest that social networks might mediate the relationship between HPWSs and organizational outcomes (e.g., C. J. Collins, C. J. & Clark, 2003; C. J. Collins & Smith, 2006; Evans & Davis, 2005; Takeuchi et al., 2007). And indeed, in our argument for Hypothesis 2, we indirectly built on the idea that the link between an HPWS and organizational-level absenteeism is partially mediated by social networks. However, we held back from explicitly adding this hypothesis to our research model and exploring this issue in greater depth because, not least, social networks per se and employees’ network building initiative are conceptually not exactly identical. Furthermore, our cross-sectional data did not allow us to draw any clear causal relationship between an HPWS and employees’ network building initiative. Nevertheless, HPWSs and employees’ network building initiative are positively correlated in our data (r = .27, p < .01). However, given the lack of conceptual equivalence and the cross-sectional restrictions of our data, we advocate for deeper empirical examination of this question in future research with a research design better suited to this aim. Study 3 – Are High-Performance Work Systems Always Beneficial? 107 4.6.4 Conclusion Past strategic HRM research has shown that high-performance work systems (HPWSs) are associated with several favorable outcomes, such as higher productivity, firm growth, and financial performance. In this paper, we challenge the assumption that HPWSs are always positive and show that their effect on organizational-level absenteeism can be beneficial as well as detrimental depending on employees’ network building initiative. 108 5 Overall Discussion and Conclusion 5.1 Abstract This is the closing chapter of this dissertation. First, it recaps the research motivation of this dissertation (i.e., how organizations can be economically productive and simultaneously provide space for positive social interactions) and, based on this, links the three derived research questions with the findings of the three empirical studies intended to respond to these questions. Then, the chapter highlights the most important findings and integrates them into the literatures of team boundary activities, collective human energy, and intraorganizational social networks. Finally, the chapter discusses general limitations and directions for future research and offers the main practical implications. Overall Discussion and Conclusion 109 5.2 Summary This dissertation has drawn upon a positive organizational scholarship (POS) lens to examine positive social interactions at multiple organizational levels. The POS lens focuses on the study of positive outcomes, processes, and attributes of organizations and the associated organizational members (Cameron et al., 2003). A previous review of the fields of POS and positive organizational behavior noted that scholars with this kind of orientation tend to study intrapersonal states and trait-like capacities (such as resilience, optimism, and hope) and thereby neglected the organizational context of these phenomena (Hackman, 2009). To overcome this pitfall, this dissertation applies a meso-level of analysis, which is characterized by careful consideration of the context of organizational behavior (House et al., 1995). Furthermore, the discussion of the past POS literature shows that several POS constructs had not been rigorously validated (Hackman, 2009). Thus, this dissertation aimed to circumvent this drawback by using validated scales (such as the one for productive energy [Cole et al., 2012]). Finally, most prior POS studies that incorporated the organizational context were either conceptual or applied qualitative research methods (Cameron et al., 2003). Hence, this dissertation, sought to complement prior POS research by applying quantitative research methods. Furthermore, this work focused on the resource-based view of the firm to explore whether organizations can be economically productive and simultaneously provide space for positive social interactions. The resource-based view posits that, to gain a competitive advantage, organizations have to create valuable resources (Barney, 1991). As mentioned before, resources are defined as valuable when they are rare, not perfectly imitable or substitutable, and allow an organization to deploy a valuecreating strategy (Barney, 1991). Hence, this dissertation used the resource-based view of the firm as an overarching framework to examine how positive social interactions at different organizational levels may function as a valuable resource and thus contribute to an organization’s competitive advantage. However, prior research has explored consequences of positive social interactions mostly at the individual level of analysis (Cameron et al., 2003; Hackman, 2009; Wright & Quick, 2009). For instance, a huge body of evidence from the medical sciences demonstrates that positive social interactions have beneficial physiological consequences for individuals’ well-being (Heaphy & Dutton, 2008). Furthermore, research on high-quality relationships shows that this kind of relationship (which is 110 Overall Discussion and Conclusion characterized by positive regard, mutuality, and feelings of vitality) tends to increase individuals’ innovative performance (Carmeli & Gittell, 2009; Carmeli & Spreitzer, 2009; Vinarski-Peretz, Binyamin, & Carmeli, 2011). However, this line of research has been constrained by the fact that a validated scale of high-quality relationships has not yet been published. To complement this prior research, this dissertation has studied positive social interactions at the level of teams and entire organizations. First, Study 1 responded to Research question 1 (“How do team boundary-buffering activities influence team innovative performance?”). In this study, we examined whether and how team boundary-buffering activities, a specific type of team social interaction directed toward a team’s external social environment, influence team innovative performance. Prior research on team boundary activities has predominantly focused on team actions that involve engagement with the external environment for important resources and support (i.e., boundary-spanning activities) and only to a lesser degree considered team actions that involve disengagement from the environment as a way to manage external demands (i.e., boundary-buffering activities). We suggest that past research has insufficiently studied the role of team boundary-buffering activities, in part because it primarily considered team boundary activities as a strategy to overcome problems of information processing between different organizational units (Galbraith, 1977; Tushman & Nadler, 1978). To complement this view, we drew upon research and the theory of the job demands-resources model (JD-R, [Demerouti, Bakker, Nachreiner, & Schaufeli, 2001]). Team boundary-buffering activities protect teams from distracting information, disruptive events, and negative emotions in the external environment. Our study shows that boundary-buffering activities sustain team productive energy and ultimately team innovative performance. Furthermore, we found that the effectiveness of team boundary-buffering activities is especially enhanced when teams face higher levels of chronic job demand overload. Second, Study 2 was intended to answer Research question 2 (“Do team boundary-spanning activities mediate the positive link between transformational leadership and team productive energy?”). In this study, we investigated whether transformational leadership (TFL) increases team productive energy through the mediation of team boundary-spanning activities. The basic idea of this study was that job resources have a motivational potential for teams. As organizations become less hierarchically structured and increasingly de-bureaucratized (Cross et al., 2000; Yan & Louis, 1999; Zammuto et al., 2007), teams benefit from engaging in boundary-spanning activities toward their external environment in order to acquire additional resources. According- Overall Discussion and Conclusion 111 ly, Study 2 shows that team boundary-spanning activities increase team productive energy. Furthermore, this study finds that TFL enables team members to span their team boundaries. In the context of our sample of functional R&D teams, the positive effect of TFL on team productive energy could be fully explained by the effect of team boundary-spanning activities. Whereas past research found that age diversity is harmful to team functioning (Kearney & Gebert, 2009; Kunze & Bruch, 2010), our study suggests that, when carefully managed by a transformational leader, age diversity can increase team boundary-spanning activities and ultimately bolster team productive energy. Third, Study 3 was directed toward answering Research question 3 (“Does the interplay between high-performance work systems and employees’ network building initative detrimentally affect organizational-level absenteeism?”). In general, previous research has found ample evidence that high-performance work systems (HPWSs) positively affect organizational performance (Combs et al., 2006). However, very little HPWS research has studied absenteeism as a focal outcome of interest (Kehoe & Wright, 2013; Zatzick & Iverson, 2011). Nevertheless, the majority of this research proposes that, overall, HPWSs reduce organizational-level absenteeism (Guthrie et al., 2009; Ramsay et al., 2000; Way et al., 2010; Zhou et al., 2005). Contrasting arguments from social exchange theory (Blau, 1964) with literature on positive social interactions (Heaphy & Dutton, 2008), in this study we proposed a theoretical model for why HPWSs may have both beneficial and detrimental effects on organizational-level absenteeism. Our central argument was that, when employees tend to build few social networks on their own initiative, HPWSs help to reduce organizational-level absenteeism by providing employees with a supportive social structure from the top down (Evans & Davis, 2005). On the contrary, when employees proactively build strong social networks on their own, an HPWS rather impairs their bottom-up initiatives and provokes organizational-level absenteeism by demanding additional extra-role behavior (Bolino et al., 2013; Van Dyne & Ellis, 2004). Our empirical findings support the idea that the beneficial effects of HPWSs and employees’ network building initiative on organizational-level absenteeism may cancel each other out. In general, we found that the reduction in bottom-up effect of network building initiative on organizationallevel absenteeism was more powerful than the top-down effect of HPWSs. In sum, the results of these three studies extend our understanding of how different types of positive social interactions – which can all be characterized as beneficial from the perspective of organizational groups or members (i.e., team boundarybuffering activities [Study 1], team boundary-spanning activities [Study 2], and social 112 Overall Discussion and Conclusion network building initiative [Study 3]) – positively influence performance-related outcomes at multiple levels. These positive outcomes are situated at the team level (e.g., increased team innovative performance [Study 1] and sustained team productive energy [Study 2]) and at the organizational level (e.g., reduced organizational-level absenteeism [Study 3]). Hence, the results of these three studies suggest that these different types of positive social interactions at multiple levels may function as a valuable resource for organizations. However, as we have seen in Study 3, there might by tradeoffs between these bottom-up activities and top-down practices, such as highperformance work systems (HPWSs). 5.3 Theoretical Integrations of Most Important Research Findings The following section highlights the most important findings of the three empirical studies of this dissertation and integrates them with respect to the literatures of team boundary activities, collective human energy, and intraorganizational social networks. Previous literature on team boundary activities that stemmed from an organizational design perspective used an information-processing lens to study boundary activities (Ancona, 1987; Galbraith, 1977). Referring to this perspective, organizations are defined as information-processing systems intended to deal with uncertainty (Tushman & Nadler, 1978). Information processing is understood as gathering, interpreting, and synthesizing information in the course of organizational decision-making (Tushman & Nadler, 1978). With the perspective pursued in this dissertation, the information-processing approach shares the assumption that organizations are open systems (Thompson, 1967). However, an information-processing lens reduces social interactions between subunits within an organization to a matter of cognitive problem solving and coordination between interdependent actors (Lawrence & Lorsch, 1967). Early literature on boundary activities referred to the processing of information between different organizational components metaphorically rather than to concrete social interactions between human beings (Tushman & Nadler, 1978). Consequently, the organizational design perspective refers to organizations as a set of structural sub-units linked by tasks rather than a social community of interacting humans (Tushman & Nadler, 1978). The most important contributions of this dissertation for the literature on team boundary activities is that we complement the structural, functional, and taskoriented approach of the organizational design perspective with a more personcentered, emotive perspective related to the job demands-resources (JD-R) literature. Overall Discussion and Conclusion 113 A considerable difference between the top-down perspective of the organizational design perspective and the bottom-up perspective of the JD-R model is that the latter offers a more detailed understanding of how humans use, consume, and replenish their resources. Whereas the former refers to resources primarily from the perspective of organizations as material inputs, throughputs, and outputs, the latter refers to resources, from the perspective of individuals, as those aspects of a job that are instrumental in “achieving work goals, reducing job demands and their associated physiological and psychological costs, and, finally, stimulating personal growth, learning, and development” (Demerouti et al., 2001, p.501). Whereas prior research did not find evidence for the effectiveness of team boundary-buffering activities, our study suggests that team boundary-buffering activities indeed increase team innovative performance as mediated through the emotive state of team productive energy. Another important contribution to the literature on team boundary activities is the finding that age diversity can strengthen team boundary activities when carefully managed by a transformational leader (TFL). The conceptual idea behind this research was that social similarity of team members and external stakeholders may facilitate team boundary-spanning activities (Joshi, Dencker, Franz, & Martocchio, 2010). If a team brings together members with a variety of different social attributes (such as age), they will be more likely to connect with various external stakeholders. Likewise, they may have more problems in developing a shared team identity and resolving team conflicts. On the one hand, transformational leadership helps in developing a shared team social identity and preventing team conflict whereas, on the other hand, TFL helps in orchestrating these team boundary-spanning activities. Prior research on organizational demography suggests that there might be differences across contexts of which social attributes (such as age, gender, race) allow people to build informal social intergroup relations (Joshi, 2006). However, we suggest that in the context of the R&D teams under study in this dissertation similarity of age is such a salient attribute. Our results stands in contrast to prior findings that showed that, at best, transformational leaders can buffer negative effects of age diversity (Kearney & Gebert, 2009; Kunze & Bruch, 2010). Our study is the first to show that, when managed carefully by a transformational leader, age diversity also may have positive effects. Furthermore, another important contribution of this dissertation is that it examines the collective motivational potential of team productive energy. Past theoretical work has pointed to the fact that traditional concepts of work motivation explain motivation primarily at the individual level of analysis (Gottschalg & Zollo, 2007; Shamir, 114 Overall Discussion and Conclusion 1991) 11. To overcome this shortfall, strategy scholars introduced the collective-level construct of joint production motivation, which is defined as any cooperative productive activity that includes people’s use of heterogeneous but complementary resources and alignment toward common goals (Lindenberg & Foss, 2011). Past conceptual work proposes that a joint production motivation can be a valuable resource for organizations and thus create a knowledge-based competitive advantage (Foss, 2011; Lindenberg & Foss, 2011). However, the constructs of joint production motivation and productive energy share some conceptual overlap. Both constructs extend work motivation theories at an individual level by emphasizing the alignment toward collective organizational goals (Cole et al., 2012; Lindenberg & Foss, 2011). However, to date, no empirical measure of joint production motivation exists (Lindenberg & Foss, 2011). Thus, for future research, productive energy might be a viable option to measure the collective motivation, respective joint production motivation, within an organization. Furthermore, the research included in this dissertation proposes that there might be a trade-off between generative dynamics emerging bottom-up at the individual level of organizations (such as employees’ network building initiative) and organizational practices implemented top-down (such as high-performance work systems [HPWSs]). In this dissertation, we empirically found that, when employees build few social networks on their own initiative, an HPWS has beneficial effects on organizational-level absenteeism. At the same time, when employees proactively build strong social networks on their own initiative, an HPWS may have limiting effects. In the same vein, Jensen and colleagues (2013) found that employees’ perception of the utilization of an HPWS is positively related to employees’ anxiety, role overload, and turnover intentions when they are unable to exercise job control. Furthermore, Wood, Van Veldhoven, Croon, and de Menezes (2012) showed that HPWSs indirectly encourage organizational-level absenteeism through increased levels of stressful emotions, whereas they did not find such a harmful effect on financial performance and workers’ productivity. Future research might do well to examine which kind of generative bottom-up dynamics may conflict and which may harmonize with different top-down organizational practices and which kind of context may facilitate versus hinder this interplay. 11 Indeed, there is recent literature that extended work motivation to the level of teams (Chen & Kanfer, 2006; Chen et al., 2009), but this work focuses merely on the interplay between team and individual processes and does not cover the alignment of teams or individuals to the goals of a higher level entity such as an organization. Overall Discussion and Conclusion 115 5.4 Overall Limitations and Directions for Future Research The next chapter reviews general limitations of the empirical research included in this dissertation and, based on these, develops suggestions for future research. First, one of the major challenges in POS research is the potential existence of backward causality between the focal concepts of interest (e.g., team boundary-spanning activities and team productive energy) because positive phenomena tend to produce mutually reinforcing positive gain spirals (Cameron, Dutton, Quinn, & Wrzesniewski, 2003). For example, Fredrickson and Joiner (2002) found within a longitudinal study that positive affect at time 1 predicted college students’ coping with stress at time 2 which, in turn, explained their positive affect at time 2. Burns and collaborators (2008) extended this research with another longitudinal study showing that students’ positive affect and coping at time 1 mutually increased their positive affect and coping at time 2. However, not expected was that they did not find a similar reciprocally reinforcing link between concepts of positive affect and social support. Furthermore, two experimental longitudinal studies have shown that individuals’ positive affect is reciprocally related to physical health (Kok et al., 2013; Kok & Fredrickson, 2010). Additionally, Kok and colleagues (2013) found that this link was explained by individuals’ perceived quality of social interactions. Drawing upon the logic and evidence from the literature of positive affect, it is plausible that some of the concepts examined in this dissertation might also mutually reinforce each other through positive gain spirals. For example, in Studies 1 and 2, we suggest that both team boundary-buffering activities and team boundary-spanning activities unidirectionally increase team productive energy. However, in turn, team productive energy may also strengthen these team boundary activities. In order to empirically test these potentially reciprocal relationships, future research should apply longitudinal research designs. Overall, prior work has suggested that all different research methodologies have their strengths and weaknesses (Chatman & Flynn, 2005). Chatman and Flynn (2005) proposed a classification of two ideal types of research methodologies. At one end of a continuum, one type of research offers insights by exploring, observing, and assessing a phenomenon – for example, by using observational, survey, or archive data. At the other end of this continuum, another type of research aims to control and manipulate a phenomenon – for example, by applying laboratory and field experiments, scenario techniques, or simulation studies. Chatman and Flynn (2005) propose a research program that includes both types of phenomenon examination, which they refer to as fullcycle organizational behavior research, can diminish the weaknesses of the different 116 Overall Discussion and Conclusion methodologies. However, the research included in this dissertation primarily falls into the first category of phenomenon investigation. Hence, future research on the relationship between boundary activities and team productive energy should ideally encompass studies tending to the second type of methodology. First, future research may apply a cross-lagged panel design to test the relationship between boundary activities and team productive energy over time (Kenny, 2005). Within a cross-lagged panel design, two constructs are measured at two points in time. To assess whether these two constructs influence each other over time, one determines the effect of construct A (e.g., team boundary-spanning activities) at time 1 on construct B (e.g., team productive energy) at time 2 as well as the reciprocal effect of construct B at time 1 on construct A at time 2 after controlling for the main effects of both constructs. This kind of research allows researchers to answer questions like, “Do team boundary-spanning activities increase team productive energy and vice versa, or do they relate to each other in a reciprocal manner?” Second, field experiments would allow researchers to draw causal inferences about the relationship between team boundary activities and team productive energy by manipulating individual constructs (Campbell & Stanley, 1966). Future research might draw on research on positive affect to gather ideas on how to manipulate team productive energy. For example, to induce positive affect, this research has applied a loving-kindness meditation (Fredrickson, Cohn, Coffey, Pek, & Finkel, 2008; Kok et al., 2013). If it proves impossible to experimentally induce productive energy, one could also apply a quasi-experimental design using propensity score matching. Third, a quasi-experimental design using propensity score matching could likewise allow for the drawing of causal inferences regarding the constructs under study (Rosenbaum & Rubin, 1983). The basic idea of propensity score matching is that, based on a vector of control variables that also potentially influence the dependent variable, one can generate an experimental and a control group (Rosenbaum & Rubin, 1983). In principle, this procedure should derive two groups that have similar properties, except for the independent variable of interest. Hence, this propensity score method would allow for the assessment of whether a team showing higher levels of team boundary-spanning activities at time 1 would also experience higher levels of team productive energy at time 2, as compared with a team showing lower levels of team boundary-spanning activities at time 1 (Rosenbaum & Rubin, 1983). Overall, as a next step in research on the relationships between team boundary activities and team pro- Overall Discussion and Conclusion 117 ductive energy, these techniques should allow for the drawing of inferences regarding the causal relationship between team boundary activities and team productive energy. A second limitation of the research presented in this dissertation is the restricted generalizability of the findings. In principle, this dissertation proposes that various types of positive social interaction at multiple organizational levels can add to a competitive advantage. For example, Studies 1 and 2 have shown that team boundarybuffering and -spanning activities positively influence team productive energy. Furthermore, Study 1 found that team boundary-spanning activities indirectly increase team innovative performance while Study 3 demonstrated that employees’ network building initiative reduces organizational-level absenteeism. However, these performance-related outcomes might not be equally important across different organizational contexts. Specifically, these outcomes play an important role when employees are faced with open-ended, knowledge-intense, and complex tasks (Osterloh & Frey, 2000; Spender, 1996) that require a high degree of firm-specific knowledge (Leana & Van Buren III, 1999; Tsui et al., 1997). These characteristics hold for employees at the level of general manager or member of a research and development unit. Usually, in these contexts, labor costs are expensive, and organizations tend to strive for long-term relationships with their employees. In these kinds of contexts, the described positive social interactions at multiple organizational levels satisfy both the normative orientation of the POS perspective (to increase flourishing and thriving) and economic rationality in the sense that they contribute to organizations’ productivity. However, in contexts where organizations follow a low-price strategy and labor cost is cheap (e.g., in textile production), it might be economically more effective, although contradictory to the POS principles, to adhere to control strategies, as associated with the principal agent theory (Jensen & Meckling, 1976). 5.5 Main Practical Implications The following section summarizes the main practical implications of this dissertation. First, as mentioned in the introduction, this dissertation aims at contributing to a dialogue between science and practice. The research included within this dissertation was guided by the idea that organizations can be places that contribute to both human flourishing and economic productivity. However, the different positive relational practices studied in this dissertation, namely team boundary-buffering activities, team boundary spanning-activities, and employees’ social network building initiative, are all 118 Overall Discussion and Conclusion characterized by facilitating human agency. All of these different types of positive social interaction are proactive employee behaviors. To a large extent, the individual teams and employees have sole responsibility for how to shape their team boundary activities and informal social network building. Consequently, organizations cannot force these proactive relational behaviors but they can enable and encourage them. For example, organizations could sensitize their employees of how to manage different activities associated with their team boundaries. Hence, as Study 1 suggests, organizations could train their employees for instance regarding the different team boundary-buffering activities, such as filtering and evaluating external requests, showing helping behavior when external demands are placed on individual team members, setting clear priorities, carefully communicating information that might cause insecurity and disturbance, and clearly communicating to external stakeholders when team members feel overloaded with work. In a final step, organizations could even empower teams to decline external requests when they have reasons to believe they are not legitimate. Our findings show that these boundary-buffering activities are particularly effective when teams feel overloaded with work. Furthermore, as Study 2 shows, supervisors can play an instrumental role in encouraging team members to engage in team boundary activities. For instance, supervisors might inspire their team members with an electrifying vision that comprises encountering other external stakeholders across the team boundaries, acting as boundary-spanning role models themselves, and sharing their own social networks in order to help their team members approach people who are pivotal in fulfilling their team tasks. However, Study 3 of this dissertation gives cause for concern that also well intended organizational top-down practices, such as high-performance work systems, might have unintended harmful side effects. Hence, although organizations are well advised to offer their employees an enabling social structure that includes, for instance, high levels of training, cross-functional and cross-trained teams, high levels of information sharing, and internal participatory mechanisms, Study 3 suggests that organizations also should leave space, energy, and time for their employees to voluntarily build their social networks on their own initiative. Second, by investigating the construct of productive energy, this dissertation adds to the debate on organizational sustainability. As mentioned in the introduction, Pfeffer (2010) pointed to the fact that organizations already tend to pay attention to the Overall Discussion and Conclusion 119 environmental and economic aspects of this topic but consider the human aspect to a lesser extent. However, the increased organizational rates of psychological distress and diseases show that this human dimension of sustainability has also a significant impact on organizations (OECD, 2012). Study 1 of this dissertation underscores that productive energy not only increases employees’ welfare, through outcomes such as higher levels of job satisfaction and lower turnover intention (Raes et al., 2013), but also positively influences performance-related outcomes, such as team innovative performance. Hence, particularly the construct of productive energy promises to be a linking pin that weaves together human flourishing on the one hand with economic productivity on the other. 5.6 Conclusion Drawing from a positive organizational scholarship (POS) perspective, this dissertation focuses on the question of how organizations can be economically productive and simultaneously provide space for positive social interactions. In sum, the results of the three studies included in this dissertation propose that positive social interactions at multiple organizational levels (i.e., team boundary-buffering activities, team boundaryspanning activities, and employees’ social network building initiative) positively influence performance and well-being-related outcomes at multiple organizational levels (i.e., organizational-level absenteeism, team productive energy, and team innovative performance). Overall, the findings of this dissertation suggest that different types of positive social interactions can add to both human flourishing and organizations’ competitive advantage. 120 Appendix 6 Appendix Figure 6-1 Multilevel Confirmatory Factor Analysis for Transformational Leadership Between level Transformational Leadership *** *** .94 (.26) *** *** .93 (.24) .95 (.07) V1 V2 *** *** *** . 87 . 99 .93 (.06) (.04) (.05) V3 V4 *** .94 (.10) G1 *** .91 (.14) G2 *** *** *** G .73 (.04) G4 R1 *** 1.00 (. 00) R2 .70 (1.02) Intellectual Stimulation Role Model .99 .98 (.03) (.04) .70 (.96) .86 (.18) .87 (.41) Group Goals Vision *** * .95 (.23) *** *** .96 (. 06) .99 (. 01) R3 N1 *** *** .97 (. 10) *** .99 (. 08) N2 High Performance Expectations Individualized Support .97 (.23) N3 I1 ** .99 (.32) I2 *** *** *** .99 .98 (.23) (.24) I3 .92 (.07) I4 H1 *** 1.00 (.00) H2 Please turn over *** .99 (.09) H3 Appendix 121 Within level Transformational Leadership *** *** .94 (.01) *** *** *** .58 (.03) .77 (.05) . 77 (.06) V1 V2 V3 *** .70 (.04) V4 V5 *** .82 (.08) G1 *** .72 (.07) G2 *** *** *** G .50 (.09) G4 R1 *** *** .90 (.03) *** .86 (. 05) R2 ** .74 (.13) .34 (.13) Intellectual Stimulation Role Model .80 .82 (.05) (.06) *** .78 (.03) .93 (.05) Group Goals Vision *** *** .92 (.04) .61 (. 06) R3 N1 *** *** .71 (. 03) *** .74 (. 03) N2 High Performance Expectations Individualized Support .81 (.06) N3 I1 *** *** .81 .87 (.05) (.04) I2 *** *** .80 (.07) I3 .59 (.05) I4 H1 *** *** .61 (.06) .55 (.06) H2 Full maximum likelihood estimation with robust standard errors. 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Leadership Quarterly, 16(1): 39-52. 154 Curriculum Vitae Ulrich Leicht-Deobald was born on July 10, 1975, in Braunschweig, Germany. EDUCATION 2011 – 2014 University of St. Gallen, Switzerland Doctoral studies in Management (Dr. oec.) 2012 University of Michigan, United States of America Program in Quantitative Research Methods 2005 – 2010 University of Bremen, Germany M.A. in Psychology (Dipl. Psych.) London School of Economics and Political Science, UK Visiting student at the Department of Management Ratsgymnasium Osnabrück, Germany German Abitur (equivalent to high school diploma) 2008 1988 – 1995 WORK EXPERIENCE Since 2014 University of St. Gallen, Switzerland Senior Researcher, Institute for Leadership and HR Management 2014 University of Michigan, United States of America Visiting Scholar at Institute for Social Research 2010 – 2014 University of St. Gallen, Switzerland Research Associate, Institute for Leadership and HR Management 2008 Swiss Federal Institute of Technology Zurich, Switzerland Intern, Center of Organizational and Occupational Science University of Bremen, Germany Teaching Assistant, Department of Human and Health Sciences 2006 – 2007 1997 – 2005 1996 – 1997 Deutsches Schauspielhaus Hamburg, Münchner Volkstheater, Landestheater Detmold, Germany Engagements as actor after attending drama school Health Center Hamburg-Horn, Germany Civil Service