Individual behavior and group membership: Comment

Charness et al. (2007b) have shown that group membership has a strong effect on individualdecisions in strategic games when group membership is salient through payoff commonality.In this comment I show that their findings also apply to non-strategic decisions, even when nooutgroup exists, and I relate the effects of group membership on individual decisions to jointdecision making in teams. I find in an investment experiment that individual decisions withsalient group membership are largely the same as team decisions. This finding bridges theliterature on team decision making and on group membership effects.