We examine how group decision-making affects other-regarding behavior in experimental dictator games. In particular, we assess whether the effects of iterated games differ for group and individual decision-making and whether the difference in decision-making style (individual or group) changes the perception of social identity. We make two findings on group decision-making. First, group decisions become more selfish when repeating the game after changing group members. Second, a dictator group donates more to a recipient group at the same university than to a recipient group at a different university. These findings are not true for individual decision-making.
© 2019 by Walter de Gruyter Berlin/Boston