Cooperative outcome interdependence, task reflexivity, and team
Transcription
Cooperative outcome interdependence, task reflexivity, and team
Journal of Applied Psychology 2007, Vol. 92, No. 3, 628 – 638 Copyright 2007 by the American Psychological Association 0021-9010/07/$12.00 DOI: 10.1037/0021-9010.92.3.628 Cooperative Outcome Interdependence, Task Reflexivity, and Team Effectiveness: A Motivated Information Processing Perspective Carsten K. W. De Dreu University of Amsterdam A motivated information processing perspective (C. K. W. De Dreu & P. J. D. Carnevale, 2003; see also V. B. Hinsz, R. S. Tindale, & D. A. Vollrath, 1997) was used to predict that perceived cooperative outcome interdependence interacts with team-level reflexivity to predict information sharing, learning, and team effectiveness. A cross-sectional field study involving management and cross-functional teams (N ⫽ 46) performing nonroutine, complex tasks corroborated predictions: The more team members perceived cooperative outcome interdependence, the better they shared information, the more they learned and the more effective they were, especially when task reflexivity was high. When task reflexivity was low, no significant relationship was found between cooperative outcome interdependence and team processes and performance. The author concludes that the motivated information processing perspective is valid outside the confines of the laboratory and can be extended toward teamwork in organizations. Keywords: group decision making, team effectiveness, reflexivity, cooperative goals ing. When such epistemic motivation is low, cooperative outcome interdependence is unlikely to contribute to team effectiveness. Teams have become a basic building block in organizations (e.g., Cohen & Bailey, 1997; Pfeffer, 1997). A good starting point to understand the psychological processes underlying team effectiveness is the Theory of Cooperation and Competition (Deutsch, 1949, 1973; Johnson & Johnson, 1989; Tjosvold, 1998). It suggests that people in groups perceive their goals and those of others to be cooperatively linked (“swim or sink” together) or competitively linked (one swims, the other sinks). Under perceived cooperative, rather than competitive, outcome interdependence, team members have high trust, are more likely to experience psychological safety, handle their conflicts more constructively, and benefit from these conflicts both as individuals and as a team (Stanne, Johnson, & Johnson, 1999; Tjosvold, 1998; Wong, Tjosvold, & Yu, 2005). In this article, I review the evidence for the theory and note that it is unclear whether cooperative outcome interdependence is a necessary and sufficient condition for teams to be effective. Expanding on a motivated information perspective on interpersonal negotiation and group decision making (e.g., De Dreu, 2005; De Dreu & Carnevale, 2003; De Dreu, Weingart, & Kwon, 2000; see also Hinsz, Tindale, & Vollrath, 1997; Meglino & Korsgaard, 2004), I argue and show that cooperative outcome interdependence stimulates team effectiveness especially when team members are motivated to engage in deep and systematic information process- Cooperative Outcome Interdependence and Team Effectiveness Members of organizational teams are interdependent in a number of ways. In many cases, team members depend on each other for individual task completion. Such task interdependence (Wageman, 1995) needs to be distinguished from outcome interdependence, that is, the extent to which team members’ outcomes depend on their personal or team performance (e.g., Van der Vegt, Emans, & Van de Vliert, 2000, 2001; Wageman, 1995; see also Katz & Kahn, 1978; Schelling, 1960). The way outcomes and rewards are structured may give rise to perceived cooperative outcome interdependence or to perceived competitive outcome interdependence (Deutsch, 1973; Tjosvold, 1985, 1998; Wong et al., 2005). Under cooperative outcome interdependence, team members assume they swim or sink together and that they benefit from each other’s performance. Under competitive outcome interdependence, in contrast, team members assume that when they swim, others sink, and vice versa. The concept of cooperative outcome interdependence is closely linked to work on prosocial versus proself motivation in interpersonal negotiation and small-group decision making (e.g, De Dreu, Giebels, & Van de Vliert, 1998; Ten Velden, Beersma, & De Dreu, 2007; Weingart, Bennett, & Brett, 1993). This work proceeds on the basis of the assumption that group members face a mixedmotive situation with incentives to invest in the team and to contribute to collective performance as well as incentives to do well personally and to benefit from others’ cooperative effort (Katz & Kahn, 1978; Kelley & Thibaut, 1978; Schelling, 1960). Depending on temperament, socialization, or situational influences, team members may adopt a prosocial motivation and focus on collective goals, or alternatively, they may adopt a proself This research was supported by grants from the Dutch National Science Foundation (NWO Grant 410.21.010P), awarded to Carsten K. W. De Dreu, and the Van der Gaag Stichting, awarded to Carsten K. W. De Dreu and Aukje Nauta. I thank Bart de Vries, Hanneke Franssen, and Nieske Winters for their help with data collection. Correspondence concerning this article should be addressed to Carsten K. W. De Dreu, University of Amsterdam, Department of Psychology, Roetersstraat 15, 1018 WB Amsterdam, the Netherlands. E-mail: c.k.w.dedreu@uva.nl 628 MOTIVATED INFORMATION PROCESSING IN TEAMS motivation and focus on individual goals and relative performance (Batson, 1998; Van Lange, 1999). When team members adopt a prosocial motivation and perceive cooperative outcome interdependence, they handle differences of opinion and other types of conflict better, learn more, and perform more effectively. Children who debate their opposing insights under cooperative outcome interdependence are better in role taking, display enhanced moral reasoning, and cooperate more than do children working alone or in competition (e.g., Bridgeman, 1981; Doise, Mugny, & Perret-Clermont, 1975). Alper, Tjosvold, and Law (2000) concluded that “organizational teams that rely on cooperative approaches to conflict would appear to be good candidates for making use of their autonomy for themselves and the organization” (p. 638). And in their meta-analytic review, Stanne et al. (1999) made the following observation: The results of these studies indicated that cooperation promoted higher individual achievement and greater group productivity than did competition. . . . resulted in significantly longer time on task, more frequent use of higher reasoning strategies, a greater number of new ideas and creative insights generated, and greater individual transfer of what is learned to new situations. (p. 134) Although encouraging, the work described above leaves unclear whether and why cooperative outcome interdependence by itself leads to positive team outcomes. There is little doubt that cooperative outcome interdependence helps constructive dispute resolution and fosters between-member coordination. But why would people perceiving cooperative outcome interdependence use higher reasoning strategies more frequently, and why would it lead them to learn more and to work harder? Equally likely, it seems, is that cooperative outcome interdependence leads people to focus on harmony and consensus, to maintain their pleasant and peaceful situation, and to rely on harmonysecuring and easy-to-defend heuristics such as “equal split is fair” and “consensus implies correctness.” In fact, research in a variety of domains has suggested that cooperative outcome interdependence by itself contributes little to team processes and performance. First, evidence suggests that cooperative outcome interdependence by itself does not predispose individuals to engage in more or less deliberate and thorough, or shallow and heuristic, information processing (De Dreu, 2006; De Dreu, Koole, & Oldersma, 1999). Second, research has suggested that perceived cooperative outcome interdependence affects job satisfaction and individual and team performance only when task interdependence is high and team members need each other to complete their tasks (e.g., Fan & Gruenfeld, 1998; Van der Vegt et al., 2001; Wageman & Baker, 1997). Third, recent work has indicated that individuals become more creative when they work under competitive outcome interdependence (Munkes & Diehl, 2003) and that groups with prosocially motivated members are better in planning and coordination, but worse in creative ideation, than are groups with proself motivated members (Beersma & De Dreu, 2005; Goncalo & Staw, 2006). Perhaps the most troubling evidence comes from studies that use the so-called hidden-profile task (Stasser, 1999). Under hidden-profile conditions, each individual group member holds some items of information that are shared with other group members and some that are available to the individual only. On 629 the basis of the information at their disposal, individual group members come to prefer a decision alternative that they would recognize as being suboptimal were they to pool all of the information available among them (Stasser & Titus, 1985, 1987). Many studies have documented that, in cooperative groups, information that is held in common by group members is discussed at the expense of members’ uniquely held information (for reviews, see Hinsz et al., 1997; Stasser, 1999; Wittenbaum, 2000; Wittenbaum & Stasser, 1996). And because cooperative groups exchange and emphasize commonly held information and ignore critical but unshared information, they tend to reach suboptimal decisions. Taken together, there is evidence that when there is conflict or difference of opinion, prosocial motivation and cooperative outcome interdependence helps team effectiveness. Otherwise, it remains unclear why cooperative outcome interdependence by itself would be beneficial to team effectiveness. Evidence suggests that prosocial motivation quite easily leads team members to focus on consensus and coordination instead of on new ideas and problem solutions, drives them toward the sharing of information already known to all members, and leads them to settle on suboptimal 50 –50 compromises. Because members of organizational teams are likely to bring different expertise and information, the conclusion should be that perceived cooperative outcome interdependence may be a liability rather than an asset and that it may be a necessary, but certainly not sufficient, condition for teams to perform effectively. Motivated Information Processing and Group Decision Making Attempts to uncover the reasons for the pervasive failure of cooperative groups to uncover hidden profiles have focused primarily on variables influencing whether shared or unshared information is exchanged (e.g., Larson, Christensen, Abbott, & Franz, 1996; Stasser & Titus, 1985, 1987). Expanding this “groups as information processors” framework (Hinsz et al., 1997), recent work has indicated that at least as important is whether group members actively and systematically process the information that is exchanged. According to dual-process models (Chaiken & Trope, 1999), people can choose between heuristic processing of information, characterized by more shallow, less critical processing of information and a reliance on well learned associations on the one hand and more systematic, effortful ways of processing that lead to deeper and more elaborate, argument-based evaluations of information on the other hand. At the group level, Stasser and Birchmeier (2003) distinguished between preference-driven and informationdriven group interaction (see also Hastie, Penrod, & Pennington, 1983). In preference-driven groups, members take stock of extant preferences and form a group judgment by aggregating these preferences. Group members may rely on the “consensus implies correctness” heuristic (Chaiken & Stangor, 1987) to (rightly or wrongly) infer that the group has reached a correct decision, or they may use an “equal split is fair” heuristic to solve their conflicts of interest (Pruitt, 1981). Informationdriven groups, on the other hand, are characterized by the communication and integration of relevant information and thus by systematic processing. DE DREU 630 Whether group members engage in information-driven interaction and concomitant deep processing of information depends on individual differences such as need for cognitive closure or need for cognition (Kruglanski & Webster, 1996; Petty & Cacioppo, 1986). The epistemic motivation to engage in systematic information processing may also derive from the situation. For example, individuals under low rather than high time pressure tend to engage in systematic information processing and are less influenced by inadequate heuristics (De Dreu, 2003; Kruglanski & Freund, 1983). Also, when individuals are held accountable for the decision-making process, they engage in deep information processing and develop an accurate and multifaceted understanding of the decision problem. When such process accountability is lacking, however, individuals are more likely to jump to conclusions on the basis of insufficient evidence, do not engage in deep thinking, and are heavily influenced by heuristic cues (e.g., Lerner & Tetlock, 1999; Simonson & Staw, 1992). Finally, team members may engage in systematic information processing under high levels of task reflexivity, that is, “the extent to which team members overtly reflect upon the group’s objectives, strategies, and processes and adapt them to current or anticipated endogenous or environmental circumstances” (West, 1996, p. 559). Under high task reflexivity, team members overtly reflect on the group’s objectives, strategies, and processes and adapt them to current or anticipated circumstances (Carter & West, 1998). Several studies support the idea that factors that increase systematic information processing help groups to overcome their information sampling bias and to reach better decisions. For example, Postmes, Spears, and Cihangir (2001) showed that when a criticality norm has been induced in the group, more even-handed consideration of unshared information takes place and groups make high-quality decisions more often. Kelly and Loving (2003; see also De Grada, Kruglanski, Mannetti, & Pierro, 1999) showed that mild rather than acute time pressure resulted in better information exchange and better decisions, and Galinsky and Kray (2004) showed that the activation of a counterfactual mindset increased the discussion of unshared information and helped groups to identify the correct decision alternative. Groups under process accountability reported higher motivation to process information systematically, repeated unshared information more often during group discussion, and more often chose the correct decision alternative (Scholten, Van Knippenberg, Nijstad, & De Dreu, in press). Finally, groups under high task reflexivity report higher team effectiveness (Schippers, Den Hartog, Koopman, & Wienk, 2003) and are more innovative (De Dreu, 2002; Tjosvold, Tang, & West, 2004). The Present Study: Hypotheses and Overview Although many researchers may be tempted to see (perceived) cooperative outcome interdependence as critical to effective teamwork, work on negotiation and group decision making has suggested that cooperative groups may rely on inadequate decision heuristics, fail to develop new and creative problem solutions, often focus too much on consensus and shared information, and shy away from dissent and unshared information. Laboratory experiments on negotiation and group decision making have further suggested that it is high levels of systematic, rather than heuristic, information processing that foster the quality of joint agreement and group decisions. Integrating these two lines of research suggests that perceived cooperative outcome interdependence may set the stage for constructive and open-minded exchange of task-relevant information but that systematic information processing is needed to help team members to combine and integrate this information into new problem solutions and better ways of completing their tasks. In other words, perceived cooperative outcome interdependence increases team effectiveness, but only when team members engage in systematic information processing. Indeed, prosocial negotiators develop more trust and achieve higher joint outcomes than do proself negotiators, but only when negotiators are under process accountability and motivated to process information systematically (De Dreu, Beersma, Stroebe, & Euwema, 2006). In a way, the motivated information processing perspective and its evidence implies an important extension and qualification of the theory of cooperation and competition. Cooperative outcome interdependence not only stimulates constructive conflict handling but also improves other team processes and team effectiveness, especially when team members are motivated to engage in deep and deliberate processing of available and new information. However, the evidence for the proposed interaction between cooperative outcome interdependence and systematic information processing comes from bargaining experiments in which process accountability was manipulated. It is thus unclear whether, first, the perspective has any validity outside the laboratory and, second, applies to interpersonal and group processes outside the boundaries of interpersonal negotiation. Third, it remains to be seen whether factors other than process accountability have the same moderating influence on effects of prosocial motivation and cooperative outcome interdependence and thus whether the perspective captures the influence of many, rather than one or two, predictor variables. Fourth, it remains to be seen whether the theory makes valid predictions with regard to the combined influence of cooperative outcome interdependence and information processing motivators on group-level information sharing and individual learning from that information. Whereas this is implied in previous work, there has not been any empirical test thus far. In the present study, I submitted the motivated information processing perspective to a new test and addressed the shortcomings mentioned above. Hypothesized relationships were examined in a field study with a variety of organizational teams. Cooperative outcome interdependence was assessed in the same manner as was done in previous work (for a review, see Tjosvold, 1998). To capture systematic information processing, a measure of task reflexivity was used. In addition to team effectiveness, the study included measures of information sharing and learning. Figure 1 presents the model tested. It shows that cooperative outcome interdependence is expected to predict information sharing in teams and learning, which in turn is expected to predict team effectiveness. However, the effects of cooperative outcome interdependence are hypothesized to be contingent on task reflexivity, which through enhanced motivation to systematically process information, stimulates information sharing as well as learning. In other words, the effects of cooperative outcome interdependence on information sharing, MOTIVATED INFORMATION PROCESSING IN TEAMS 631 Task Reflexivity Motivation to Systematically Process information Cooperative Outcome Interdependence Information Sharing Learning Team Effectiveness Figure 1. Motivated information processing and team effectiveness. Only the solid variables were included in the study. learning, and team effectiveness are expected especially when task reflexivity is high rather than low. Thus, I made the following predictions: Hypothesis 1: Team effectiveness will be higher when team members perceive cooperative outcome interdependence, especially when task reflexivity is high rather than low. Hypothesis 2: Teams will engage in more information sharing when team members perceive cooperative outcome interdependence, especially when task reflexivity is high rather than low. Hypothesis 3: Team members will learn more from each other when they perceive cooperative outcome interdependence, especially when task reflexivity is high rather than low. Hypothesis 4: Effects of cooperative outcome interdependence and task reflexivity on team effectiveness will be mediated by information sharing and learning. Method Participants and Procedure A database of a private company involved in selection and assessment was used to select clients who were members of, or could get me into contact with, organizational groups that fit the definition of teams as ongoing, semiautonomous groups whose members have joint responsibility for accomplishing a set of tasks (Guzzo & Shea, 1992). A research assistant and I approached 52 clients and asked them to introduce us to their team supervisor. Forty-eight clients agreed to do so, and 46 of the 48 supervisors responded positively. Thus, the final sample included 368 individuals in 46 teams, with team size ranging between 4 and 13 (M ⫽ 8.0) individuals. The average response per team was 84%, with a minimum of 75% and a maximum of 98%. Sixty-five percent of the respondents were male, and respondents averaged 34.8 (SD ⫽ 6.75) years of age. Team members had received some type of higher education, that is, either a technical (63%) or a university (37%) degree. All teams were semiautonomous and performed nonroutine, complex tasks that required differential expertise and skills. All but two teams were of mixed gender. Most teams were management or (cross-functional) project teams in different areas, including consulting, financial planning and accounting, and research and development. Because analyses involving gender composition and type of team (consulting, accounting, research and development) yielded no effects involving either variable (all Fs ⬍ 1.3), these variables are not discussed further. Invariably, team members interacted at least once a week in plenary meetings and informally on a day-to-day basis. Team members were told that the purpose of the study was to gain an understanding of the manner in which organizational teams function and work together. Teams were promised and given feedback after the survey, individual anonymity was ensured, and it was emphasized that feedback would be relevant to aggregated data only. Team members were given the survey during a collective meeting and asked to take it home to complete on their own time, independently and without consulting their peers, and to return the questionnaire within 2 weeks in a prestamped return envelope. Supervisors (N ⫽ 46) received their questionnaire 1 to 3 weeks later and also were given 2 weeks to complete it (each team had only one supervisor, and the supervisors supervised and commented on only one team). As a reminder, and to motivate team members to return the materials, a research assistant attended the next collective meeting (2 to 4 weeks after the first meeting). Team Measures All teams were located in the Netherlands, and as team members were Dutch speaking, all materials were presented in Dutch. All teams performed tasks that rendered moderate to high levels of task interdependence; in fact, a set of items assessing task interdependence yielded high and strongly skewed scores, with little variance within or across teams. 632 DE DREU Beyond this, task interdependence is ignored in the present study. However, three other control variables were included in the analyses. First, team size was included (as reported by the supervisor). Second, team tenure was assessed by asking the team supervisors to indicate how long (in months) the majority of the current members had been on the team. Third, workload was assessed with three items derived from Campion, Medsker, and Higgs’s (1993) study, for example, “Because there is so much work to do, we have great difficulty finishing our tasks.” Items were rated on a scale ranging from 1 (not at all) to 5 (very much). Cooperative outcome interdependence was measured with three items derived from Janssen, Van de Vliert, and Veenstra’s (2000) study, for example, “When one or more team members excel in their work, I benefit from that.” Items were rated on a scale ranging from 1 (strongly disagree) to 5 (strongly agree). Task reflexivity was measured with a selection of the items reported by Carter and West (1998; see also De Dreu 2002; Schippers et al., 2003). Specifically, reflexivity was measured by asking team members to what extent they agreed with the following items: (a) “The team often reviews its objectives”; (b) “The methods used by the team to get the job done are often discussed”; (c) “We regularly discuss whether the team is working effectively together”; and (e) “In this team, we modify our objectives in light of changing circumstances.” Items were rated on a scale ranging from 1 (totally disagree) to 5 (totally agree). Information sharing was measured with a six-item scale developed for this study. Items are (Item 1) “Communicating is a problem in my team”; (Item 2) “Members of my team inform each other about work-related issues”; (Item 3) “The quality of information exchange in our team is good”; (Item 4) “I get new facts, insights, and ideas from my colleagues”; (Item 5) “During work meetings we tell each other what we knew already and do not exchange new information”; and (Item 6) “We do not repeat ourselves during team meetings.” Items were rated on a scale ranging from 1 (rarely) to 5 (very often). After reverse coding Items 1 and 5, the scale proved reliable, and ratings were averaged into one index of information sharing. Learning was measured with three items: “Team members learn a lot from each other”; “My team learns from mistakes and errors”; and “Team members ask and give each other feedback.” Items were rated on a scale ranging from 1 (rarely) to 7 (very frequently).1 Team Effectiveness Team supervisors were in close contact with their teams (80% of the respondents reported meeting informally or formally with their team at least once a week). Team effectiveness was assessed with a scale developed by Hackman (1987) and previously used in Dutch translation by Van Vianen and De Dreu (2001). Supervisors were asked to rate, on 7-point scales ranging from 1 (totally disagree) to 7 (totally agree), their team on five statements tapping into aspects of team effectiveness. Sample items are “This team is good in coming up with ways to complete their tasks”; “This team effectively deals with uncertainty and unexpected events”; and “At times, this team fails to approach its task adequately” (reverse coded). Results Treatment of the Data and Descriptive Statistics Individual missing values were substituted with the overall sample’s average for that particular item, provided the number of missing values per individual did not exceed 10% of his or her answers (which was the case for 5 individuals from three different teams; the data from these individuals were not included in the analyses). Alternative substitution methods did not alter the conclusions. Because some constructs were available at the team level only (supervisor ratings of team effectiveness) and other constructs pertained to group-level processes rather than individual-level processes, I checked whether data from individual team members could be aggregated within teams (for discussions on multilevel issues, see Klein & Kozlowski, 2000). Table 1 provides, for each measure, the ICC(1) and ICC(2), which were computed following the formulas presented in studies by Bliese (2000) and Bliese & Halverson (1998) (see also Shrout & Fleiss, 1979). Eta-squared statistics were .26 for workload, .32 for cooperative outcome interdependence, .29 for task reflexivity, .55 for learning, and .43 for information sharing: all Fs(1, 45) ⬎ 2.09, all ps ⬍ .05. These statistics support and justify aggregation of individual data to the team level (cf. Bliese, 2000). Table 1 shows small to moderate correlations among the study variables. Cooperative outcome interdependence was not significantly related to any variable, supporting the notion that important moderator variables may be at work. Consistent with the idea that task reflexivity fosters information processing, a significant positive correlation between task reflexivity and information sharing emerged. Also, task reflexivity was negatively related (marginally) to team effectiveness, suggesting that deep information processing is not necessarily good. Finally, team effectiveness only positively related to learning. Team Effectiveness and Team Processes (Hypotheses 1–3) Predictions were tested using moderated multiple regression analysis. In the first step, the three control variables were entered: team size, team tenure, and workload. In the second step, main effects for cooperative outcome interdependence and task reflexivity were entered. In the third and final step, the interaction between cooperative outcome interdependence and task reflexivity was entered. In all analyses, predictor variables were centered, and significant interactions were decomposed using simple slope analyses (Aiken & West, 1991). Table 2 summarizes the results for information sharing, learning, and team effectiveness. Team effectiveness. The overall regression model was significant, R2 ⫽ .32, F(6, 39) ⫽ 3.53, p ⬍ .01. Although the control variables in Step 1 did not explain a significant amount of variance 1 Principal component analysis revealed five factors with an eigenvalue greater than 1, explaining a total of 62% of the variance. Inspection of the factor loadings and cross-loadings revealed that items grouped well together as intended. An exception was the information sharing scale, where items 3 and 4 had loadings of .43 and .47, respectively. Because the scale was reliable, I decided to use all items in the analyses (dropping the items from the scale did lead to any significant change in results). These results support the existence of different scales and discriminant validity of the instruments that were used. MOTIVATED INFORMATION PROCESSING IN TEAMS 633 Table 1 Descriptive Statistics and Zero-Order Correlations for All Study Variables 1. 2. 3. 4. 5. 6. 7. 8. a Team size Team tenurea Workload Coop. Outc. Interdep. Task reflexivity Information sharing Learning Team effectivenessa M SD ICC(1) ICC(2) 1 2 3 4 8.03 3.70 3.50 4.04 3.12 3.58 3.94 4.22 3.86 0.44 0.39 0.30 0.49 0.51 0.69 0.89 — — .21*** .20*** .19** .26** .13** — — — .66*** .66*** .63*** .70*** .55*** — — ⫺.01 ⫺.11 .07 .23 ⫺.11 .15 .16 — .31* .07 .01 .01 ⫺.08 ⫺.16 .67 .22 .28* .27† ⫺.16 .07 .75 .14 .08 .26† .15 5 .79 .48** .29* ⫺.25† 6 7 8 .66 ⫺.26† ⫺.08 .81 .43** .69 Note. N ⫽ 46. Dashes indicate that data were not applicable. Cronbach’s alphas are on the diagonal. Coop. Outc. Interdep. ⫽ cooperative outcome interdependence. a Supervisor ratings. † p ⬍ .10. * p ⬍ .05. ** p ⬍ .025. *** p ⬍ .01. in team effectiveness, F(3, 39) ⬍ 1, the main effects did so in Step 2, F(2, 39) ⫽ 4.41, p ⬍ .025. Higher task reflexivity was associated with higher team effectiveness. As predicted, however, adding the interaction between cooperative outcome interdependence and task reflexivity in Step 3 significantly increased the amount of variance explained, F(1, 39) ⫽ 7.44, p ⬍ .01. Figure 2 (top panel) shows that cooperative outcome interdependence related to higher effectiveness when task reflexivity was high, B ⫽ 2.55, t ⫽ 4.06, p ⬍ .001. When task reflexivity was low, cooperative outcome interdependence was not significantly related to team effectiveness, B ⫽ ⫺.14, t ⬍ 1, ns. The results support Hypothesis 1. Information sharing. The overall regression model was significant, R2 ⫽ .36, F(6, 39) ⫽ 4.78, p ⬍ .01. Whereas the control variables in Step 1 did not explain a significant amount of variance, F(3, 39) ⬍ 1, adding the main effects in Step 2 explained a significant increase, F(2, 39) ⫽ 6.15, p ⬍ .005. Table 2 shows that higher task reflexivity predicted more information sharing. This effect was qualified by the significant interaction between cooperative outcome interdependence and task reflexivity, entered in Step 3, F(1, 39) ⫽ 9.69, p ⬍ .01. Simple slope analyses showed that cooperative outcome interdependence related to more information sharing when task reflexivity was high, B ⫽ 1.62, t ⫽ 4.77, p ⬍ .001. When task reflexivity was low, perceived cooperative outcome interdependence was not significantly related to information sharing, B ⫽ ⫺.12, t ⬍ 1, ns (see also Figure 2 [middle panel]). The results support Hypothesis 2. Learning. The overall regression model was significant, R2 ⫽ .42, F(6, 39) ⫽ 5.31, p ⬍ .001. The control variables in Step 1 did not explain a significant amount of variance in learning, F(3, 39) ⬍ 1.70, ns, but the main effects did so in Step 2, F(2, 39) ⫽ 5.18, p ⬍ .01. Task reflexivity was positively associated with learning, as expected. Adding the interaction between cooperative outcome interdependence and task reflexivity in Step 3 led to a further increase in explained variance, F(1, 39) ⫽ 14.48, p ⬍ .001. Simple slope analyses showed that cooperative outcome interdependence related to more learning when task reflexivity was high, B ⫽ 2.09, t ⫽ 4.70, p ⬍ .001. When task reflexivity was low, cooperative outcome interdependence was not significantly related to learning, B ⫽ ⫺.71, t ⫽ ⫺1.12, p ⬍ .26, ns. The results support Hypothesis 3 (see also Figure 2 [bottom panel]). Mediation Tests (Hypothesis 4) In my original model, I argued that information sharing and learning would mediate the interaction between cooperative outcome interdependence and task reflexivity on the one hand and Table 2 Regressions of Team Effectiveness, Information Sharing, and Learning on Cooperative Outcome Interdependence (CI), Task Reflexivity (TR), and Their Interaction Dependent variable Team effectiveness Predictor variable Step 1 (control) Team size Team tenure Workload Step 2 (main effects) CI TR Step 3 (interaction effect) CI ⫻ TR * p ⬍ .05. ** p ⬍ .025. B SE Information sharing ⌬R2 B SE .043 0.02 0.23 0.46 0.01 0.17 0.39 0.40 0.82** 0.39 0.29 2.35** 0.86 Learning ⌬R2 .036 0.06 ⫺0.07 0.06 0.01 0.09 0.21 .147** .182** 0.09 0.53** 0.22 0.15 1.44** 0.46 .124** B ⫺0.02 0.10 ⫺0.10 SE ⌬R2 .072 0.01 0.12 0.27 .146** 0.58* 0.52** 0.28 0.20 2.32** 0.61 .143** .204** DE DREU 634 team effectiveness on the other. To test for mediation, I repeated the moderated multiple regression analyses used to test the hypothesis about team effectiveness while controlling for information sharing (Model 1) and team learning (Model 2). Table 3 summarizes the results. In Model 1, the previously significant interaction between reflexivity and cooperative outcome interdependence was significant, B ⫽ 3.36, t ⫽ 3.71, p ⬍ .001. In addition, regressing information sharing on team effectiveness produced a nonsignificant model, R2 ⫽ .06, F(4, 41) ⬍ 1, ns. Thus, there is no support for the idea that information sharing mediates the effect of cooperative outcome interdependence and task reflexivity on team effectiveness (cf. Kenny, Kashy, & Bolger, 1998). In Model 2, the previously significant interaction between reflexivity and cooperative outcome interdependence was no longer significant, B ⫽ 1.85, t ⫽ 1.83, p ⬍ .10. In addition, regressing learning on team effectiveness produced a significant model, R2 ⫽ .24, F(4, 41) ⫽ 3.36, p ⬍ .01, with learning being a significant predictor, B ⫽ 0.58, t ⫽ 3.22, p ⬍ .01. Finally, a Sobel test confirmed that the reduction in explained variance between simple and multiple regression was significant, z ⫽ 2.43, p ⬍ .015. Together, these results suggest partial support for Hypothesis 4 —learning (but not information sharing) significantly mediates the effect of cooperative outcome interdependence and task reflexivity on team effectiveness. Conclusions and Discussion In this study, several predictions, derived from a motivated information processing perspective on negotiation and group decision making, were tested in the context of team processes and team effectiveness. Consistent with this perspective and with laboratory experiments, the present study shows that cooperative outcome interdependence related to more information sharing, to learning, and to higher levels of team effectiveness when task reflexivity was high. When task reflexivity was low, cooperative outcome interdependence had no significant relationships with information sharing, learning, or team effectiveness. In addition, the present study indicates that learning, and not information sharing, mediated the interaction between cooperative outcome interdependence and task reflexivity on team effectiveness. This study provides new support for the motivated information processing perspective (De Dreu, 2005; De Dreu & Carnevale, 2003; Scholten et al., in press). Evidence shows that laboratory groups make better decisions and negotiate their conflicts more constructively (a) when members perceive cooperative outcome interdependence and have a prosocial motivation and (b) when members (are motivated to) engage in systematic, deliberate, and thorough processing of information. This new support is important for a number of reasons. First, the support for the motivated information processing perspective was based exclusively on laboratory experiments with psychology undergraduates performing relatively simple tasks in short-lived encounters. Through triangulation (Campbell & Stanley, 1963), the present replication and extension lends further confidence in the validity of the motivated information processing perspective. Further, it indicates that the perspective also makes valid predictions in high-stakes situations, where team members share a past and a future and perform relatively complex, nonroutine tasks. Second, the present study adds to previous work on motivated information processing in teams by showing that cooperative outcome interdependence and task reflexivity affect not only team members’ information sharing but also their learning. And although researchers studying motivated information processing have thus far ignored learning, it proved to be important in that it mediated the interaction of cooperative outcome interdependence and task reflexivity on team effectiveness. Thus, future research with regard to motivated information processing in group decision making and work teams will benefit from closer attention to individual and group-level learning. That learning did, and information sharing did not, significantly mediate the effects of cooperative outcome interdependence and task reflexivity on team effectiveness is consistent with other work showing that social and epistemic motivation do not have their effects because they increase the amount of information that is exchanged but rather because they increase the processing of this Table 3 Regressions of Team Effectiveness on Cooperative Outcome Interdependence (CI), Task Reflexivity (TR), and Their Interaction After Controlling for Information Sharing (Model 1) and Learning (Model 2) Model 1 Predictor variable Step 1 (control) Team size Team tenure Workload Step 2 (mediator) Information sharing (Model 1) Learning (Model 2) Step 3 (main effects) CI TR Step 4 (interaction effect) CI ⫻ TR B SE ⫺0.01 0.28† 0.42 0.01 0.16 0.36 ⌬R2 .054 B ⫺0.02 0.21 0.48 SE 0.28 — 0.33 1.19** 0.37 0.31 3.36** 0.91 ⌬R2 .043 0.12 0.17 0.38 .035† .091 0.69** — — 0.22† — 0.12 0.27 0.70** 0.42 0.31 1.85† 1.01 .23** .087† .20** Note. Dashes indicate that data were not applicable. p ⬍ .10. * p ⬍ .05. ** p ⬍ .025. † Model 2 .036† MOTIVATED INFORMATION PROCESSING IN TEAMS 6 Team Effectiveness 5,5 5 Task Refl (-1sd) 4,5 4 3,5 Task Refl (+1sd) 3 2,5 2 low (-1sd) high (+1sd) Cooperative Outcome Interdependence 6 Information Sharing 5,5 5 4,5 4 Task Refl (-1sd) 3,5 3 2,5 Task Refl (+1sd) 2 low (-1sd) high (+1sd) Cooperative Outcome Interdependence 6 5,5 5 Learning 4,5 Task Refl (+1sd) 4 3,5 3 Task Refl (-1sd) 635 information. For example, De Dreu, Koole, and Steinel (2000) found that negotiators under process accountability did not exchange more information than did negotiators who were not held accountable, but they did pay more attention to newly available information. This increased information processing and the resulting improved understanding of the negotiation task accounted for the effects of process accountability on the quality of negotiated agreement. In a similar vein, Scholten et al. (in press) found that effects of process accountability on group decision-making quality were not mediated by the sheer amount of information that group members exchanged but rather by the repetition of unshared information items. These prior studies, together with the present study, thus indicate that motivated information processing effects reside at the level of processing and integration of information more than at the level of information exchange per se. Third, the present study is the first to show that task reflexivity moderates the effects of perceived cooperative outcome interdependence. Previous studies on motivated information processing only examined the moderating influence of process accountability, despite the claim that any factor that motivates to systematically process information would act as a moderator of the effects of perceived cooperativeness and concomitant prosocial motivation (cf. De Dreu & Carnevale, 2003). The findings for task reflexivity are conducive to this claim and thus extend previous work in an important way. However, as no direct measures of systematic information processing were included, future research is needed to show that the present effects of task reflexivity were indeed due to higher motivation to process information systematically. The present study speaks to a number of issues beyond the motivated information processing perspective. For instance, a large number of studies have shown that cooperative outcome interdependence leads to more constructive conflict management and better learning from clashing opinions than does competitive outcome interdependence (Stanne et al., 1999; Tjosvold, 1998). This work left unclear, however, whether and why cooperative outcome interdependence would be beneficial by itself or only when differences and opposition emerge. Because the present study shows that cooperative outcome interdependence related to team process variables and team effectiveness especially when task reflexivity was high, I conclude that perceived cooperative outcome interdependence is not a sufficient condition for team effectiveness. One may wonder whether task reflexivity, with its presumed high levels of systematic information processing, should always be recommended and always help teams to perform more effectively. Decision making often involves a tradeoff between effort and accuracy: The strategies that more often lead to the correct choice most of the time also require more effort and time. One benefit of using simplifying strategies and “quick and dirty” heuristics evidently is that these are quick methods to arrive at a choice. In other words, it is not always better to engage in deep processing. Rather, when decisions are unimportant and time is limited, this may not be a wise thing to do. Further, deep processing may also lead to stalemates or to decision delay. For relatively complex decisions, 2,5 2 low (-1sd) high (+1sd) Cooperative Outcome Interdependence Figure 2. Moderating effect of task reflexivity (Refl) on the relationship between cooperative outcome interdependence and team effectiveness (top panel), information sharing (middle panel), and learning (bottom panel). 636 DE DREU for example, it probably is always possible to search for more information. However, eventually, the time must come to make a choice. When self-imposed or external deadlines are given, this may not be a real problem, and systematic information processing may benefit more than it hurts. But when no such deadlines exist, factors stimulating systematic information processing may help when the tasks are moderately complex but hurt when the tasks are simple and straightforward or when tasks are overly complex. Future research could be developed to test this curvilinear relationship among systematic information processing, task complexity, and team effectiveness. In the introduction, I cited several studies showing that cooperative outcome interdependence has a number of positive effects, especially when team members have high rather than low task interdependence (e.g., Fan & Gruenfeld, 1998; Van der Vegt et al., 2001; Wageman & Baker, 1997). Although relevant data are lacking, the present study suggests that high task interdependence may have its moderating effects because it stimulates systematic information processing. Testing this hypothesis is important because support would allow researchers to treat, within this context, task interdependence as just one of the many predictors of systematic information processing. Ultimately, this would lead to a rather integrative, yet parsimonious, theory of negotiation, group decision making, and team effectiveness. Before closing, some limitations need to be addressed. Whereas the design of the study prevented—in some, but not all, cases—the occurrence of common-method variance by using different sources for predictor variables (team members) and outcome measures (supervisors), the design of the study was cross-sectional, which prohibits conclusions about causality. Granted, many experimental studies were conducted to support the causal links in the motivated information processing perspective (e.g., De Dreu, 2003; De Dreu et al., 1999; De Dreu et al., 2006; De Dreu, Koole, et al., 2000; De Dreu, Weingart, et al., 2000; Scholten et al., in press; Van Kleef, De Dreu, & Manstead, 2004). Nevertheless, it is important that researchers are careful about causality and develop longitudinal designs to address this issue. Further, the present findings are based on self-reports with regard to the occurrence of task reflexivity. Although these self-reports converged considerably at the team level, thus suggesting at least intersubjectivity, more objective measures of task reflexivity would be desirable. Also, work is needed to better understand where task reflexivity comes from. Is it a particular leadership style, an external threat, the result of particular personality variables present in the team, or any combination of these and other factors? It may be useful to know this because it may clarify whether teams with high task reflexivity are different on a number of dimensions than are those low in task reflexivity. Finally, as mentioned earlier, this study included indirect measures of systematic information processing—information sharing and learning—and future research is needed to show that the present results can indeed be explained in terms of heightened motivation to process information systematically. 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