Article Group work often is not as effective and motivating as people think (e.g., Paulus, Dzindolet, Poletes, & Camacho, 1993). Indeed, previous psychological research primarily investigated motivation losses in teams (i.e., reductions in motivation in group as compared to individual work; see Karau & Williams, 1993, for a review). In recent years, however, the situation is changing with studies showing also higher effort in group versus individual performance settings (i.e., motivation gains