We examine a new class of games, which we call social games, where players not only choose strategies but also choose … players in different roles, among other things. We also examine finite repetitions of games where players may choose to … rematch in any period. Some equilibria of fixed-player repeated games cannot be sustained as equilibria in a repeated social …

We show that, in repeated common interest games without discounting, strong `perturbation implies efficiency' results …

cooperation and coordination within teams. Using artificial agents, different social contests are created, as training …

In this paper we argue that authorities aid cooperation by means of direct coordination or the enforcement of pre …

norms. In recent years, there has been substantial progress, however, on how cooperation norms are enforced. Here we review … insights into the proximate and ultimate forces behind human cooperation. …

environment. Subjects play one-shot investment games in pairs. Investors send an amount to trustees and request a return on this …

behavior. We propose that religious rituals promote in-group trust and cooperation that help to overcome collective …-action problems. We test this hypothesis on communal societies for whom mutual cooperation is a matter of survival. We design field …