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....

We model a community of individuals whose relationships are governed by the rules of the so-called Heider balance theory, but modified to address the impact of tolerating intolerant individuals. To consider tolerance toward a different group, the elements are assigned one of the two flags, A or...