The standard method when analyzing the problem of cooperation using evolutionary game theory is to assume that people … illustrate how reputation based choice of opponents can explain both the emergence and deterioration of cooperation. We show that … empirical and experimental evidence of cooperation is consistent with our hypothesis that people behave so as to minimize the …

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

cooperation preferences. …

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 analyze a cooperation game in an evolutionary environment. Agents make noisy observations of opponents' propensity … two agents agree to play. Pareto optimal cooperation is evolutionarily stable when reputation perfectly reflects … propensity to cooperate. With some reputation noise, there will be at least some cooperation. Individual concern for reputation …