This paper investigates the effects that different patterns of similarity among group members have on a group's performance on a problem-solving task. I discuss and test hypotheses on the effects of similarity on group performance derived from two literatures: balance theory and research on homophily. In an experiment I found that the relative…

The hypothesis was that structures built by group members in dealing with conflict and decision making would be contingent on their life styles. Three different sets of groups of persons with homogeneous life styles created three different (and predicted) structures in a problem-solving task. (Author)