This paper experimentally examines how religious festivals and the degree of religiosity affect cooperation and … altruistic punishment by using public goods experiments. We conducted the experiments in Turkey at different points in time; one … religious festivals other than the normal daily prayers. The overall results show no differences in cooperation or altruistic …

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 …

We provide a direct test of the role of social preferences in voluntary cooperation. We elicit individuals' cooperation … preference in one experiment and make a point prediction about the contribution to a repeated public good. This allows for a … predicted contributions, because they contribute in the first half of the experiment. We also show that the interaction of …

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 …

We investigate whether there is a link between conditional cooperation and betrayal aversion. We use a public goods …

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 …

actions of bad actors. However, in many situations bad acts go undetected and unknown to others.We use a lab experiment to …

aggression. In this lab experiment, we find that adopting an objective attitude (Objective), through a form of emotion regulation …

urban and rural participants of young and mature age cohorts. Russia is interesting for studying voluntary cooperation … cooperation-enhancing effect of punishment. An important reason is that there is substantial spiteful punishment of high … voluntary cooperation that are sustained by sanctioning free riders only …

and social norms, and trust. In a preregistered online experiment (n = 1,038), we find that biased institutions reduce …