This paper aims to analyze the role of personal identity in altruism. To this end, it starts by reviewing critically the growing literature on economics and identity. Considering the ambiguities that the concept of social identity poses, our proposal focuses on the concept of personal identity....

Postponing payments in the Dictator game, subjects allocate future payments between themselves and others. Since both payoffs of Dictators and Receivers are delayed equally, standard intertemporal utility maximization predicts no effect. Nevertheless, we observe negative effect of time on altruism.