The Role of Group Boundaries in Human Altruism and Anti-Social Behavior

Exchange between humans can be facilitated by altruistic cooperation, and the willingness to punish those who act selfishly. But in some societies punishment is directed at cooperators as well as defectors, in a way that harms efficiency and is more akin to outright hostility and aggression (1). This raises the fundamental question of how such different… CONTINUE READING