n this paper we propose a pluralistic and multi-dimensional ap- proach to cooperation. Specifically, we seek to show … that, in certain settings, less unconditional forms of cooperation may be combined with more gratuitous ones. Starting with … the prisoner’s dilemma game, the evolution of cooperation is analyzed in the presence of different strate- gies, which …

him if they can reduce the extent their punishment by doing so. A person may also use the punishment activity for gains if … conditions for the taking up the punishment activity are also worked out. …

motivation behind the punishment behavior. A society requires people to implant the social norms in others, and punishing the …. Since, punishing the rule breaker also benefits non-punishers, some people may start selling the punishment activity, if the …

requested information. Factors related to social capital, i.e., expected reciprocity and the extent to which a scientist …

Dufwenberg and Kirchsteiger�s (2004) extends Rabin�s (1993) theory of reciprocity in a dynamic sense, introducing a … rule of revision for player�s beliefs. The Sequential Reciprocity Equilibrium [SRE] they define can be dynamically … inconsistent. In this article it is argued that such dynamic inconsistency is not intrinsically related to issues of reciprocity …

environments in which they experience more cooperation in comparison with controls? …

significantly promotes cooperation even absent negative consequences for non-cooperative behavior. We discuss the implications of … our findings for shaping institutional design to promote cooperation. …