The article suggests a new explanation for cooperation in large, unstructured societies that avoids the restrictions required in most previous attempts. Our explanation deals with the role of internalized norms. Even internalized norms, i.e. norms that alter the perceived utility from acting in...

This paper investigates whether altruistic punishment when cooperation norms are violated is sensitive to gender effects. Our framework is a one-shot social dilemma game with third-party punishment in which subjects are informed of the others' gender within their group. This allows us to test...