Effect of self- and group efficacy on group performance in a mixed-motive situation

The effect of self- and group efficacy on the performance of three-person (N = 26) and seven-person (N = 28) groups on a mixed-motive investment task was investigated. The correlations between group efficacy for making money and the actual amount of money made by the groups were positive and significant. The relation between group efficacy and the group's performance was reciprocal. The results also indicated that members of three-person groups had significantly higher perceptions of group efficacy than members of seven-person groups even though they faced the identical mixed-motive investment task. The correlations between group efficacy and the group's performance were significantly higher than the correlations between aggregated values of self-efficacy for individual performance and the group's performance. Finally, multiple regression analyses showed that self-efficacy for individual performance had a negative effect on the group's performance.