People cooperate more in one-shot interactions than can be explained by standard textbook preferences. We discuss a set of non-standard preferences that can accommodate such behavior. They are social, in the sense of incorporating the payoffs of other persons; they are also norm-based, in the...

Several experimental studies on altruism have found women to be more generous than men. We investigate whether observed gender gaps in generosity can be explained by experimental setting, where some settings are more conducive than others to activating gender identity and social norms. In a...

Children who can count on support from altruistic parents may not try hard to succeed in the labor market. Moreover, parental altruism makes withdrawal of such support non-credible. To promote work effort, parents may want to instill norms which later cause their children to experience guilt or...

We look at gender differences among adolescents in Sweden in preferences for competition, altruism and risk. For competitiveness, we explore two different tasks that differ in associated stereotypes. We find no gender difference in competitiveness when comparing performance under competition to...