This paper experimentally examines how religious festivals and the degree of religiosity affect cooperation and … religious festivals other than the normal daily prayers. The overall results show no differences in cooperation or altruistic … differences in beliefs about others contributions. By and large, this indicates the importance of conditional cooperation …

find support for risk dominance of TFT as a determinant of cooperation. This comment introduces the "Payback" strategy … explain the observed cooperation patterns …

We investigate how group boundaries, and the economic environment surrounding groups, affect altruistic cooperation and … harm those who defect, encouraging a norm of cooperation towards the group. Adding competition between groups causes even … stronger in-group cooperation, but also a qualitative change in punishment: punishment becomes antisocial, harming cooperative …

Explaining the evolution and maintenance of cooperation among unrelated individuals is one of the fundamental problems … mechanism to maintain cooperation among humans. In this paper we explore the boundary conditions for altruistic punishment to … maintain cooperation by systematically varying the cost and impact of punishment, using a subject pool which extends beyond the …

initial cooperation rates are similar, it increases in the groups with higher intelligence to reach almost full cooperation … differences in the response to past cooperation of the partner. In higher intelligence subjects, cooperation after the initial … difference is absent. Cooperation of higher intelligence subjects is payoff sensitive, thus not automatic: in a treatment with …

beliefs with experience are central to understanding behavior and learning in the IRPD. Beliefs strongly predict cooperation …

Switzerland and that entering messengers must work in performance pay firms in the U.S. We find that the erosion of cooperation …

cooperation in the presence of "multi-directedness," whereby people's preferences depend on their psychological motives. People …

This paper introduces new experimental designs to enrich understanding of conditional cooperation and punishment in … method. It is found that the selfish bias in conditional cooperation is made significantly worse when other players …