This paper provides experimental evidence showing that members of a majority group systematically shift punishment on … injustice affecting a member of one's own group shapes punishment of an unrelated bystander ("a scapegoat"). We manipulate the … member of one's own group is harmed, the punishment "passed" on innocent individuals more than doubles when they are from the …

This paper emphasizes that the evolution of religious institutions in Europe was influenced by the expansionary threat … cooperation (at the very least, to a secession of hostilities) when such groups are faced with the threat of potentially stronger …

of cooperation during war, we find that individual cooperativeness robustly increases with the length of time a person …

different benefits from cooperation. Although almost all heterogeneous groups agree to follow specific contribution rules with …

from over 40 countries: individual exposure to war violence tends to increase social cooperation at the local level … societies, it appears to leave a positive legacy in terms of local cooperation and civic engagement. We discuss, synthesize and …

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

of cooperation during war, we find that individual cooperativeness robustly increases with the length of time a person …

This paper emphasizes that the evolution of religious institutions in Europe was influenced by the expansionary threat … cooperation (at the very least, to a secession of hostilities) when such groups are faced with the threat of potentially stronger …