We study endogenous group formation in tournaments employing experimental three-player contests. We find that players in endogenously formed alliances cope better with the moral hazard problem in groups than players who are forced into an alliance. Also, players who are committed to expending...

We analyze how subjects’ self-assessment depends on whether its accuracy is observable to others. We find that women downgrade their selfassessment given observability while men do not. Women avoid the shame they may have if others observe that they overestimated themselves. Men, however, do...

While folk theorems for dynamic renewable common pool resource games sustain cooperation as an equilibrium, the possibility of reverting to violence to appropriate the resource destroys the incentives to cooperate, because of the expectation of conflict when resources are sufficiently depleted....