empirical research, I’m sure you have seen it, in which player 1 is asked to specify a split of $10 between himself and player 2.
Punishing unfair behavior even when it costs to do so is called altruistic punishment, and this particular experiment is called the Ultimatum Game.
Punishing unfair behavior even when it costs to do so is called altruistic punishment, and this particular experiment is called the Ultimatum Game.