We analyze a large stakes prisoner's dilemma game played on a TV show. Players cooperate 40% of the time, demonstrating that social preferences are important; however, cooperation is significantly below the 50% threshold that is required for inequity aversion to sustain cooperation. Women...

This study presents evidence from a field experiment on the prevalence of favoritism among children. Children compete in groups in a tournament in a real effort experiment with two rounds. The children report which group member they prefer to do the task in the second round, providing them with...