Case studies of cartels and recent theory suggest that repeated communication is key for stable cooperation in … understood. We study cooperation under different monitoring and communication structures in the laboratory. Under all monitoring … monitoring, where actions can only be observed with noise, cooperation is stable only when subjects can communicate before every …

from one continuation probability to the other. When switching from large to small, transient higher levels of cooperation … are observed in the early games of the small continuation set. Conversely, when switching from small to large, cooperation … probabilities. These asymmetries suggest a bias in favor of cooperation. Finally, we examine the link between altruism and RPD play …

Community enforcement is an important device for sustaining efficiency in some repeated games of cooperation. We … investigate cooperation when information about players' reputations spreads to their future partners through links in a social … network that connects them. We find that information supports cooperation by increasing trust between players, and obtain the …

The observability of partners' past play is known to theoretically improve cooperation in an infinitely repeated … information per se may not improve cooperation. A structural estimation suggests that a certain percentage of players act …

Evolution of cooperation by reciprocity has been studied using two-player and n-player repeated prisoner’s dilemma … cooperation when less generous, and better at maintaining a long-term cooperation in the presence of rare defectors when more …