considers the roles that altruism and reciprocity might play in cooperatives, and it discusses the recent, largely experimental …

We present results from a novel experiment on the effect of a policy designed to encourage cooperation in a prisoner …'s dilemma game. We find that the effect of this policy on the level of cooperation is greater when it was chosen democratically …

The expectation that non-cooperators will be punished can help to sustain cooperation, but there are competing claims … undermine cooperation in social dilemmas. In a set of experimental treatments, we find that availability of higher …-order punishment increases cooperation and efficiency when subjects have full information on the pattern of punishing, including its …

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 …

taxation. In addition, we find that local social interaction among subgroups of participants also boosts cooperation. …

dilemma in which self-interest should produce a sub-optimal outcome absent sanctions for non-cooperation. We then test …

dilemma in which self-interest should produce a sub-optimal outcome absent sanctions for non-cooperation. We then test …

A novel experiment is used to show that the effect of a policy on the level of cooperation is greater when it is chosen …