We report laboratory data on earned wealth effects in a series of anonymous dictator games. In addition to a standard (baseline) treatment in which wealth was determined by the experimenter, we conduct treatments in which either the dictator or the receiver earned wealth used in the subsequent...

We experimentally investigate the effect of endowment allocation procedures on social preferences using a two-stage dictator game. In the first stage, participants who were randomly selected as allocators had to perform a task in order to earn money. Better performance on the task resulted in...

Taking note of the wide variety and growing list of models in the literature to explain patterns of behavior observed in laboratory experiments, this paper identifies two tests, the Variety Test (ability of a model to explain outcomes under variety or alternative scenarios) and the Psychological...

It is difficult to identify acts that are purely altruistic, and do not have some level of egoism or self-interest involved. By considering situations where team members seemingly have nothing to gain by the way they distribute points to others with regard to peer evaluation, and where their...

A central question in the study of altruism has been whether there is a systematic gender difference in giving behavior. Most experimental economics research has found that women are more generous than men. Evidence also suggests that gender differences depend upon the price of giving: males are...