This paper explores new motivations behind giving. Specifically, it focuses on personal involvement and responsibility to explain why decision makers give positive amounts in dictatorial decisons. The experiment is designed to uncover these motivations. Subjects face the problem of a dictator's...

We study individual decision making in a lottery-choice task performed by three subject populations: gamblers under psychological treatment (“addicts”), gamblers’ relatives (“victims”), and normal (as far as gambling is considered) individuals. We find that addicts are willing to take...