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A computer simulation of triads was carried out with the aim of examining variables which may affect group members' satisfaction with the group decision and the group's difficulty in reaching the decision. These variables were: decision rules, relative similarity of the individual's position to the group decision, group concordance, and ego-involvement. The concept of ego-involvement in Sherif's social judgment theory of attitude change was examined as possible mechanism through which individual preference strengths influence the group decision. The results of the simulation were compared to experimental results obtained by Sung and Castore (1973). Differences and similarities in the findings are discussed and explained. (Author)