We use a two-person 3-stage game to investigate whether people choose to punish or reward another player by sacrificing money to increase or decrease the other person's payoff. One player sends a message indicating an intended play, which is either favorable or unfavorable to the other player in...

We report an experiment on two treatments of an ultimatum minigame.In one treatment, responders' reactions are hidden to proposers.We observe high rejection rates reflecting responders' intrinsic resistance to unfairness.In the second treatment, proposers are informed, allowing for dynamic...

We report evidence from public goods experiments with and without punishment which we conducted in Russia with 566 urban and rural participants of young and mature age cohorts. Russia is interesting for studying voluntary cooperation because of its long history of collectivism, and a huge...