rate of mutual cooperation rises to 90% or more. Control sessions with 8-time repeated matchings achieve less than half as … much cooperation, and cooperation rates approach zero in one-shot control sessions. In follow-up sessions with a variable … number of subperiods, cooperation rates increase nearly linearly as the grid size decreases and, with one-second subperiods …

can promote cooperation through a combination of sorting and opportunistic signaling, with late period defections by … remains unclear. In each of six treatments that vary the cooperation premium and the informational basis for reputation …, that with a high cooperation premium and good information, investment in reputation grows across sets of finitely …

This paper studies how competition between groups affects cooperation. In the control condition, pairs of subjects play …, cooperation increases by 16 percentage points. Strategies estimation shows a shift from selfish strategies (Always Defect) to …

higher the levels of cooperation. We compare the behavior from these in finitely repeated games with behavior from finitely … repeated games of the same expected length and we find that there is more cooperation in the in finitely repeated games …

determine whether a network is consistent with trade and cooperation between every buyer and seller that are connected. We show … that three network features reduce the minimal discount factor necessary for sustaining cooperation: moderate competition …

collusion via effective punishment and forgiveness. Remarkably, subjects never learn the best-reply correspondence of the one …-shot game. Our results suggest a new explanation for the emergence of cooperation. …

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 …