Conditional cooperation is an important factor in voluntary cooperation. Fehr and Schmidt (1999) show that in public … good games conditional cooperation among rational players is feasible if cooperators are sufficiently inequality averse and … above minimum contribution level (symmetric cooperation). We generalize this result by showing, first, that there exist …

We study the coevolution of cooperation, preferences, and cooperative signals in an environment where individuals … in (social norms of) cooperation in societies which are not driven by social or environmental shocks …

tried to find out whether punishment had any significant impact on increasing cooperation.Results from the experiment showed …Human cooperation is an evolutionary mystery. People tend to cooperate frequently with genetically unrelated strangers …' cooperation. The solution to this cooperative behaviour is punishment as suggested by previous literature. Therefore, this paper …

-shared conclusion that cooperation observed in experiments (and its collapse) is mostly driven by imperfect reciprocity. In this study … conditionally cooperative preferences. Cooperation generated by this type of preferences is notoriously unstable, as individuals … fraction of reciprocally cooperative subjects become selfish in the course of the experiment, while the reverse is rarely …

individuals update their beliefs about the probability of being audited, both before and after audits are definitely withdrawn. We … find that when individuals have initially experienced systematic audits, they decrease both their beliefs and their … irregular, they maintain high beliefs and continue cooperating long after audits have been withdrawn. This identifies the …

update their beliefs about the probability of being audited, both before and after audits are definitely withdrawn. We find … that when individuals have initially experienced systematic audits, they decrease both their beliefs and their … irregular, they maintain high beliefs about the probability of being audited and continue cooperating long after audits have …

's decision. When the interaction involves more than two agents things become more complicated, and in large groups cooperation … support the evolution of cooperation and whether this is affected by the kind of network structure adopted. Moreover, if … agents interact on a bipartite graph with partner selection cooperation can thrive in large groups and in a small amount of …