Comparison of Individual and Group Performance Related to Heterogeneous-Wrong Responses, Size, and Patterns of Interaction

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Abstract
Using an extended model of a pair-group study by Goldman (1966), this research examined the effects on group performance of heterogeneity-homogeneity with respect to wrong response tendencies, number of utterances, and occurrence of leadership activities. The relationships among the various factors were also examined. The results showed that under heterogeneous conditions a group performs better than an individual and that with homogeneous conditions a group performs worse than an individual. These results are more marked as the group size varies from 2 to 5. The occurrence of leadership was related to group performance under heterogeneous conditions but not under homogeneous conditions.