Explaining the evolution and maintenance of cooperation among unrelated individuals is one of the fundamental problems … in biology and the social sciences. Recent experimental evidence suggests that altruistic punishment is an important … mechanism to maintain cooperation among humans. In this paper we explore the boundary conditions for altruistic punishment to …

This paper introduces new experimental designs to enrich understanding of conditional cooperation and punishment in … public good games. The key to these methods is to elicit complete contribution or punishment profiles using the strategy … method. It is found that the selfish bias in conditional cooperation is made significantly worse when other players …

punishment in a social dilemma. Emotional reaction to free-riding incites individuals to apply sanctions when they are available …We use skin conductance responses and self-reports of hedonic valence to study the emotional basis of cooperation and …. The application of sanctions activates a "virtuous emotional circle" that accompanies cooperation. Emotionally aroused …

pressure can increase rates of punishment. We discuss our results with respect to findings in the lab on cognitive models of … dual-processing and the origins of human cooperation …

Development of human societies requires cooperation among unrelated individuals and obedience to social norms. Although … punishment is widely agreed to be potentially useful in fostering cooperation, many recent results in psychology and economics … promoting social norms. We show here, using experiments with human subjects, that public implementation of punishment can …

and use of punishment opportunities. Students cooperate more than workers. Cooperation increases in both subject pools … cooperative task. The data show that clerical workers differ from college students in overall cooperation rates, strategy adoption … when a personal punishment option is available. Students are less likely than workers to adopt strategies of unconditional …

as an intra-group identity threat) increases the use of costly punishment within the in-group …

stronger in-group cooperation, but also a qualitative change in punishment: punishment becomes antisocial, harming cooperative …We investigate how group boundaries, and the economic environment surrounding groups, affect altruistic cooperation and … punishment behavior. Our study uses experiments conducted with 525 officers in the Swiss Army, and exploits random assignment to …

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 …

There is continuing debate about what explains cooperation and self-sacrifice in nature and in particular in humans … quantitative social scientist, the triangle of two players in the presence of a predator (passing and shooting in 2-on-1 situations … idea – a familiar one to a biologist observing the natural world but perhaps less so to social scientists – that everybody …