Effects of information heterogeneity and representational roles on group member behavior and perceptions

Studied the effects of information heterogeneity (heterogeneous vs homogeneous), representational role obligations (some vs none), and group composition (male vs female) on group member behavior as assessed by the Interaction Process Analysis and self-report instruments. Data were gathered from 40 3-person groups of undergraduates participating in a simulation involving nuclear power plant siting. Heterogeneity of information was shown to inhibit social-emotional responses and to increase member influence. The presence of representational role obligations resulted in lower perceived member effectiveness than did the absence of role obligations. Female, as compared to male, groups took longer to reach agreements. Implications of the results for the assemblage and leadership of task forces are discussed. (PsycINFO Database Record (c) 2006 APA, all rights reserved).