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 …

key to the quick emergence of an efficient culture of universal cooperation because the more prosocial subjects populate … social norm of high cooperation. This norm appears to guide subjects' cooperation and punishment choices, including the …

when group members have opportunities to punish low contributors. Cooperation may also be supported if individuals are … punishment costs. The negative effect of altruism on cooperation and material payoffs is greater the stronger is the reciprocity …

for cooperation and altruism is one of the most powerful forces shaping our society, but there is an enormous behavioral … of human cooperation have found mixed evidence, possibly due to a failure to induce compliance in the behavioral … towards cooperation. Subjects with more altruistic social values or a higher tolerance towards interpersonal uncertainty are …

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 …

We use experimental methods to investigate whether pledges of commitment can improve cooperation in endogenously formed … findings show that pledges of commitment increase cooperation in committed partnerships when costs to dissolve them are shared … break up, pledges of commitment fail to improve cooperation and instead decrease cooperation. …

We use experimental methods to investigate whether pledges of commitment can improve cooperation in endogenously formed … findings show that pledges of commitment alone can increase cooperation and welfare in committed partnerships. The introduction … partnerships fall solely on the individual choosing to break up, pledges of commitment fail to improve cooperation and welfare. …

find that members of each ethnicity show favoritism towards those of their own ethnicity in both trust and cooperation and … that communication enhances inter-ethnic cooperation significantly. We also find that Uyghur and Han subjects behave …

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