'Until not much more than 20 years ago, economists frequently lamented the fact that they were limited in their empirical analyses to statistical assessments of market behavior, because controlled economic experiments were (thought to be) infeasible, unethical, or both. Much has changed in the...

This study examines data drawn from the game show Friend or Foe?, which is similar to the classic prisoner's dilemma tale: partnerships are endogenously determined, players work together to earn money, after which, they play a one-shot prisoner's dilemma game over large stakes: varying from $200...