This paper reports results of a natural field experiment on the dictator game where subjects are unaware that they are participating in an experiment. Three other experiments explore, step by step, how laboratory behavior of students relates to field behavior of a general population. In all...

There is by now ample evidence from laboratory experiments that individuals exhibit "prosocial" or "other-regarding" preferences. However, a key question is whether the importance of other-regarding preferences documented in the laboratory can be readily generalized to draw conclusions about the...

We measure a specific form of other-regarding behavior, costly cooperation with an anonymous other, among 645 subjects at a trucker training program in the Midwestern US. Using subjects' second-mover strategy in a sequential form of the Prisoners' Dilemma, we categorize subjects as: Free Rider,...

In many low- and middle-income countries blood donations per capita are substantially lower than in advanced economies. In these countries blood supply is mostly collected through directed donations from relatives and friends to individuals needing transfusions or to replace blood used in...

We investigate the relative importance of the equity and efficiency motives for altruistic behavior using an artefactual field experiment. A set of binary dictator games is implemented within a telephone survey conducted with a representative sample of adults. The results indicate that, overall,...

In this paper we examine the effects that variations in the quality of the environment at birth have on children’s other-regarding preferences, as measured through four binary-choice dictator games run with school-age children in rural Sierra Leone. We examine the effect of exogenous...

In this paper we examine the effects that variations in the quality of the environment at birth have on children's other-regarding preferences, as measured through four binary-choice dictator games run with school-age children in rural Sierra Leone. We examine the effect of exogenous variations...

A field study of altruistic behaviour is presented using a modification of the dictator game in a large random sample survey in the Netherlands (n=1,964). In line with laboratory experiments, only 5.7% donated money. In line with other survey research on giving, generosity increased with age,...