Departures from self-interest in economic experiments have recently inspired models of "social preferences". We design … a range of simple experimental games that test these theories more directly than existing experiments. Our experiments …

Departures from pure self interest in economic experiments have recently inspired models of "social preferences". We … conduct experiments on simple two-person and three-person games with binary choices that test these theories more directly … than the array of games conventionally considered. Our experiments show strong support for the prevalence of "quasi …