behavior over time and across situations. We tackle this task with an experiment and a structural model of preferences that …

preference in one experiment and make a point prediction about the contribution to a repeated public good. This allows for a … predicted contributions, because they contribute in the first half of the experiment. We also show that the interaction of …

vary. The experiment implements two marginal return types, low and high, and uses the information that members have about …

altruism, reputational concerns, and material incentives. We present an analysis of a unique data set that combines an … experimental measure of altruism, surveyed measures of other factors including reputational concerns, and call records from … explanations, we find that altruism and reputational concerns are positively associated with the decision to volunteer. Moreover …

minimum altruism, in which child labor in a given family is judged relative to a specific social standard. Under this … criterion, child labor is exploitative only in families where the parent (or guardian) displays insufficient altruism towards …