Repeated interactions provide a prominent but paradoxical hypothesis for human cooperation in one-shot interactions 1 … mechanism reliably supports the evolution of cooperation when actions vary continuously. Ambiguous reciprocity, a strategy … generally ruled out in models of reciprocal altruism, completely undermines cooperation under repeated interactions, which …

hampers cooperation, as higher intelligence players are less cooperative once they are made aware that they play against …

We experimentally examine how the incentive to defect in a social dilemma affects conditional cooperation. In our first … conditional cooperation is higher when the own gain from defecting is lower and when the loss imposed on the first mover from … role of social preferences in conditional cooperation …

mediated by differences in cognitive skills. Our design uses a Repeated Prisoner's Dilemma, and we compare rates of cooperation … higher cooperation rates and profits than in separated groups (with consistent gains among lower IQ subjects and relatively … evolutionary game theory model, where higher IQ among subjects determines - through better working memory - a lower frequency of …

theory, while sociological theories of social ties and intergroup comparisons suggest that bilateral cooperation can be … implemented by letting subjects make a positive contribution to a public good if they choose to defect from cooperation, i ….e. cooperation is collusive since the gains are at the expense of the public. We find that this negative externality increases …