We investigate parochial altruism, the combination of in-group altruism and out-group hostility, in an experimental conflict game preceded by a prisoner’s dilemma. Our data are consistent with parochial altruism, but cannot be explained by in-group pro-sociality or out-group hostility alone.

We investigate social norms for dictator game giving using a recently proposed norm-elicitation procedure (Krupka and Weber, 2013). We elicit norms separately from dictator, recipient, and disinterested third party respondents and find that elicited norms are stable and insensitive to the role...