Because I’m Worth It! (More than Others ...)
Cooperation, Competition, and Ownership Bias in Group Decision-Making
Abstract
In group decision-making, people take insufficient account of the information coming from others. We hypothesize that this can be explained by an ownership bias that would especially occur in competition, rather than in cooperation. In a two-phase decision-making situation, people reached an initial decision and then evaluated the value of their own information and the consistent and inconsistent information of others under different conditions of goal interdependence (cooperation or competition). Finally, then had to reach a final decision regarding a road accident. Results showed an ownership bias in information value which is stronger in competition than in cooperation. Moreover, decision quality was lower in competition than in cooperation, an effect mediated by the ownership bias, beyond the preference effect.
References
1995). Personal contact, individuation and the better than average effect. Journal of Personality and Social Psychology, 68, 804–825.
(1986). Evaluations of self and others: Self-enhancement biases in social judgments. Social Cognition, 4, 353–376.
(2004). Resource in(ter)dependence, student interactions and performance in cooperative learning. Educational Psychology, 24, 291–314.
(1999). Self-threat magnifies the self-serving bias: A metaanalytic integration. Review of General Psychology, 3, 23–43.
(2003). The impact of information distribution, ownership, and discussion on group member judgment: The differential cue weighting model. Organizational Behavior and Human Decision Processes, 91, 12–25.
(2006). Mastery and performance goals predict epistemic and relational conflict regulation. Journal of Educational Psychology, 98, 766–776.
(1976). The social psychology of small groups. Annual Review of Psychology, 27, 501–541.
(2003). Motivational bases for information processing and strategic choice in conflict and negotiation. In , Advances in experimental social psychology (Vol. 35, pp. 235–291). New York: Academic Press.
(2008). Conflict and creativity: Threat-rigidity or motivated focus? Journal of Personality and Social Psychology, 95, 648–661.
(2008). Motivated information processing in group judgment and decision-making. Personality and Social Psychology Review, 12, 22–49.
(2005). The possessive self as a barrier to constructive conflict management: Effects of mere ownership, process accountability, and self-concept clarity on competitive cognitions and behavior. Journal of Personality and Social Psychology, 89, 345–357.
(2004). When the social self is threatened: Shame, physiology, and health. Journal of Personality, 72, 1192–1216.
(1989). Ambiguity and self-evaluation: The role of idiosyncratic trait definitions in self-serving assessments of ability. Journal of Personality and Social Psychology, 57, 1082–1090.
(2010). Beyond group-level explanations for the failure of groups to solve hidden profiles: The individual preference effect revisited. Group Processes and Intergroup Relations, 13, 653–671.
(1986). Recent research on selective exposure to information. In , Advances in experimental social psychology (Vol. 19, pp. 41–80). New York: Academic Press.
(2003). Preference-consistent evaluation of information in the hidden profile paradigm: Beyond group-level explanations for the dominance of shared information in group decisions. Journal of Personality and Social Psychology, 84, 322–339.
(1993). Developmental expectations for the self and most other people: Age-grading in three functions of social comparisons. Developmental Psychology, 29, 539–548.
(1994). Accuracy and bias in self-perception: Individual differences in self-enhancement and the role of narcissism. Journal of Personality and Social Psychology, 66, 206–219.
(1989). Cooperation and competition: Theory and research. Edina, MN: Interaction Book Company.
(1995). Creative controversy: Intellectual challenge in the classroom. Minneapolis, MN: Interaction Book Company.
(1998). Enhancement bias in the description of self and others. Personality and Social Psychology Bulletin, 24, 505–516.
(1993). Personality development across the adult life span: Subjective conceptions versus cross-sectional contrasts. The Journals of Gerontology: Psychological Sciences, 48, 100–108.
(1994). Information sharing in decision-making groups. Journal of Personality and Social Psychology, 67, 446–461.
(1990). Judgments of self-other similarity: Just like others only more so. Personality and Social Psychology Bulletin, 16, 475–484.
(2010). Biased evaluation of information during discussion: Disentangling the effects of preference consistency, social validation, and ownership of information. European Journal of Social Psychology, 40, 946–956.
(2004). On being concerned about bragging. Current Psychology of Cognition, 22, 159–179.
(2008). Asymptotic and resampling strategies for assessing and comparing indirect effects in multiple mediator models. Behavior Research Methods, 40, 879–891.
(1994). Attitude importance as a function of repeated attitude expression. Journal of Experimental Social Psychology, 30, 39–51.
(1979). Egocentric biases in availability and attribution. Journal of Personality and Social Psychology, 37, 322–336.
(1998). The self-serving bias in relational context. Journal of Personality and Social Psychology, 74, 378–386.
(2009). Hidden profiles and concealed information. Strategic information sharing and use in group decision-making. Personality and Social Psychology Bulletin, 35, 793–806.
(in press ). Strategic use of preference confirmation in group decision-making: The role of competition and dissent. British Journal of Social Psychology.2003). Factors that may affect the difficulty of uncovering hidden profiles. Group Processes and Intergroup Relations, 6, 285–304.
(1998). Information pooling: When it impacts group decision-making. Journal of Personality and Social Psychology, 74, 371–377.
(2004). From cooperative to motivated information sharing in groups: Moving beyond the hidden profile paradigm. Communication Monographs, 71, 286–310.
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