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 …

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. …

Evolutionary theory reveals that punishment is effective in promoting cooperation and maintaining social norms … punishment. We report data from Ultimatum Games11, where a proposer offers a division of a sum of money and a responder decides …

It is well-known in evolutionary game theory that population clustering in Prisoner Dilemma games allows some … clustering to bargaining environments sustains cooperative play analogous to the situation in finitely repeated PD games. …

organized before some of the games was used as an additional control. Our results show that the degree of cooperation is rather …

TO THE ECONOMIC ACTION AND FOR COOPERATION. …

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