cooperation among water point users in groups with equal and unequal incomes. Interestingly, and in contrast to the vast majority … of related studies, cooperation does not increase under the threat of punishment, though the punishment option was …

observe surprisingly high levels of within - group cooperation in conflict situations such as civil wars. We provide an … model from cooperation in defence to cooperative and altruistic behavior in general …

membership and examine the effect of temporal role reversal on cooperation decisions. Subjects can contribute to a global public … the global good, but increases cooperation of subjects with a low endowment on their local public good, thereby … aggravating income disparities. Exogenously induced role reversal for several periods affects cooperation behavior of subjects …

cooperation systems that differ both in their level of in-group favoritism and in the tools that they employ to enforce … cooperation regimes. This paper uses an anthropological measure of the tightness of historical kinship systems to study the … structure of cooperation patterns and enforcement devices across historical ethnicities, contemporary countries, ethnicities …