Stefan Schulz-Hardt, Dieter Frey, Carsten Lüthgens, and Serge Moscovici (2000)

Biased information search in group decision making.

Journal of Personality & Social Psychology, 78(4):655-669.

Research has shown that people prefer supporting to conflicting information when making decisions. Whether this biased information search also occurs in group decision making was examined in three experiments. Experiment 1 indicated that groups as well as individuals prefer supporting information and that the strength of this bias depends on the distribution of the group members' initial decision preferences. The more group members had chosen the same alternative prior to the group discussion (group homogeneity), the more strongly the group preferred information supporting that alternative. Experiment 2 replicated these results with managers. Experiment 3 showed that the differences between homogeneous and heterogeneous groups reflect group-level processes. Higher commitment and confidence in homogeneous groups mediated this effect. Functional and dysfunctional aspects of biased information seeking in group decision making are discussed. [ABSTRACT FROM AUTHOR]

Accession Number: 3178347; Schulz-Hardt, Stefan 1; Email Address: schulz-hardt@psy.uni-muenchen.de; Frey, Dieter 1; Lüthgens, Carsten 1; Moscovici, Serge 2; Affiliations: 1: Ludwig-Maximilians-University Munich; 2: Έcole des Hautes Έtudes en Sciences Sociales Paris; Issue Info: Apr2000, Vol. 78 Issue 4, p655; Thesaurus Term: Decision making; Subject Term: Prejudices; Subject Term: Attitude (Psychology); Subject Term: Homogeneity; Subject Term: Group process; Subject Term: Social psychology; Number of Pages: 15p; Illustrations: 1 Diagram, 3 Charts; Document Type: Article

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