punished. As a consequence, the existence of an opportunity for costly punishment causes a large increase in cooperation levels … opportunity almost complete cooperation can be achieved and maintained although, under the standard assumptions of rationality and … selfishness, there should be no cooperation at all. We also show that free riding causes strong negative emotions among …

two relevant features of social life into the experiment: (i) subjects can migrate across groups with different … key to the quick emergence of an efficient culture of universal cooperation because the more prosocial subjects populate … social norm of high cooperation. This norm appears to guide subjects' cooperation and punishment choices, including the …

competitions do not reliably support cooperation because groups tend to be similar under relevant conditions. Moreover, even if …Repeated interactions provide a prominent but paradoxical hypothesis for human cooperation in one-shot interactions … mechanism reliably supports the evolution of cooperation when actions vary continuously. Ambiguous reciprocity, a strategy …

punished. As a consequence, the existence of an opportunity for costly punishment causes a large increase in cooperation levels … opportunity almost complete cooperation can be achieved and maintained although, under the standard assumptions of rationality and … selfishness, there should be no cooperation at all. We also show that free riding causes strong negative emotions among …

competitions do not reliably support cooperation because groups tend to be similar under relevant conditions. Moreover, even if …Repeated interactions provide a prominent but paradoxical hypothesis for human cooperation in one-shot interactions 1 … mechanism reliably supports the evolution of cooperation when actions vary continuously. Ambiguous reciprocity, a strategy …

two relevant features of social life into the experiment: (i) subjects can migrate across groups with different … key to the quick emergence of an efficient culture of universal cooperation because the more prosocial subjects populate … social norm of high cooperation. This norm appears to guide subjects’ cooperation and punishment choices, including the …

punished. As a consequence, the existence of an opportunity for costly punishment causes a large increase in cooperation levels … opportunity almost complete cooperation can be achieved and maintained although, under the standard assumptions of rationality and … selfishness, there should be no cooperation at all. We also show that free riding causes strong negative emotions among …

We study the importance of conditional cooperation in a one-shot public goods game by using a variant of the strategy …

received the same performance – independent hourly wage. Cutting both team members' wages caused a substantial decrease in … performance. When only one team member's wage was cut, the performance decrease for the workers who received the cut was more than … other team member's wage level. In contrast, workers whose wage was not cut but who witnessed their team member's pay being …