We study cooperation in an environment where public good providers face the decision to accept a newcomer to their group. A bottom-up process for accepting new members to social groups reveals individual preferences to include newcomers. Alternatively, inclusion can be decided in a top-down...

According to the theory of guilt aversion, agents suffer a psychological cost whenever they fall short of other people's expectations. In this paper we suggest that there may be limits to this kind of motivation. We present evidence from an experimental dictator game showing that dictators...

Affirmative action rules are often implemented to promote women on labor markets. Little is known, however, about how and whether such rules emerge endogenously in groups of potentially affected subjects. We experimentally investigate whether subjects vote for affirmative action rules, against,...