We present evidence from an experiment in which groups select a leader to compete against the leaders of other groups in a real-effort task that they have all performed in the past. We find that women are selected much less often as leaders than is suggested by their individual past performance....

We compare the determinants of individual giving between two countries, Spain and the US, which differ in their redistribution policies and their beliefs over the causes of poverty. By varying the information about the determinants of income, we find that, although overall giving is similar in...

We study how giving depends on income and luck, and how culture and information about the determinants of others' income affect this relationship. Our data come from an experiment conducted in two countries, the US and Spain – each of which have different beliefs about how income inequality...

We report experimental results on one-shot two person 3x3 constant sum games played by non-economists without previous experience in the laboratory. Although strategically our games are very similar to previous experiments in which game theory predictions fail dramatically, 80% of actions taken...

We study optimal contracts in a simple model where employees are averse to inequity, as modeled by <link rid="b20">Fehr and Schmidt (1999)</link>. A "selfish" employer can profitably exploit "envy" or "guilt" by offering contracts which create inequity off-equilibrium, i.e., when employees do not meet his demands....