an anonymous treatment where neither player is told at the end of the experiment which decision was selected for payment … future. We can decompose altruistic preferences into baseline altruism towards any partner and directed altruism towards … friends. Decision makers vary widely in their baseline altruism, but pass at least 50 percent more surplus to friends compared …

"Theories abound for why individuals give to charity. We conduct a field experiment with donors to a Yale University … theories, we conduct a laboratory experiment with undergraduates, and find no evidence to support the alternative, altruistic … motivation. We conclude that charitable gifts increase in response to the promise of public recognition primarily because of …