We analyze preferences over redistribution in societies with costly (positive) sorting according to income. We identify a new motivation for redistribution, where individuals support taxation in order to reduce the incentives to sort. We characterize a simple condition over income distributions...

We analyze the relation between religious beliefs, religious participation, and social cooperation. We focus on religions that instill beliefs about the connection between rewards and punishments and social behavior. We show how religious organizations arise endogenously, and identify a...

The focus of this paper is the endogenous formation of peer groups. In our model agents choose peers before making contributions to public projects, and they differ in how much they value one project relative to another. Thus, the group's preference composition affects the type of contributions...