such cooperation is somewhat costly. Yet Strahilevitz's study found that a majority of those users who downloaded songs … norm of reciprocity can therefore engender surprisingly robust cooperation in environments that are characterized by …

in honesty and cooperation and tested the individual-level links between these two moral domains. Participants completed … both honesty and cooperation tasks after observing their peers. Consistent with the literature, separate analysis of the … two domains indicated both negative and positive peer influences in honesty and in cooperation, with negative influences …

Cooperation is of utmost importance to society as a whole, but is often challenged by individual self-interests. While … address various important questions: For example, can cooperation in the prisoner's dilemma be promoted, when two interacting … norms? When does cooperation fail, leading to antagonistic behavior, conflict, or even revolutions? And what incentives are …

Intensive studies on indirect reciprocity have explored rational assessment rules for maintaining cooperation and … replicator equations using the expected payoffs of three strategies: unconditional cooperation, unconditional defection, and … stern-judging rule adoption. Our analysis shows that the use of the rule helps to maintain cooperation if reputation …