Fig. 1.

Giving of millionaires compared with previous studies. It was randomly determined whether a millionaire acted as an allocator in the dictator game or as a proposer in the ultimatum game. In both games, the millionaire was endowed with €100 and was asked how to split this money between herself and another participant. It was randomly determined whether the recipient was another millionaire or a low-income individual and the millionaire was informed about this characteristic of the recipient. One in 10 pairs of participants was selected for payment of the earnings in the experiment. The graph shows the average giving of millionaires when matched to a low-income individual and when matched to a millionaire. The graph also depicts the average amount given in previous studies with the dictator game (5) and in previous studies with the ultimatum game (17).