We consider a theoretical model of a public goods game that incorporates reciprocity, guilt …

We report an experiment comparing sequential and simultaneous contributions to a public good in a quasi-linear two …

reciprocity, and third-party punishment – emerges earliest as a means to increase cooperation in a repeated prisoner’s dilemma … reciprocate others’ behavior, yet direct and indirect reciprocity do not increase overall cooperation rates. We also examine the …

and indirect reciprocity as well as third-party punishment – emerges earliest as an effective means to increase … of defectors is applied. Children also engage in reciprocating others, showing that reciprocity strategies are already … prevalent at a very young age. However, direct and indirect reciprocity treatments do not increase overall cooperation rates, as …

maximal investment when agents are motivated by reciprocity? We demonstrate that indeed they can, but not in the way one might … signing of formal agreements; they may play a critical role in igniting informal cooperation underpinned by reciprocity. …

quickly if we introduce two relevant features of social life into the experiment: (i) subjects can migrate across groups with …