This paper analyzes social group formation when agents are subject to peer effects within groups increasing human capital and instantaneous utility. When agents are heterogeneous on two dimensions, ability and social skills, and monetary payments are not feasible the model predicts segregation...

Optimal team composition has been the focus of exhaustive analysis, academic and otherwise. Yet, much of this analysis has ignored possible dynamic effects: e.g., anticipating that team formation is based on prior performance will affect prior performance. We test this hypothesis in a lab...