experiment corroborates these findings and confirms that donors are motivated by the economic value of the items offered. We also …

to the altruism of donors, these natural experiments help identify heterogeneity in the distributions of the latent … altruism which motivates donors. This study examines gender heterogeneity of volunteer response by blood donors following the … predictions of a model where the distribution of latent altruism has smaller variance among women than men. First, the highest …

the donor (impure warm-glow altruism). Consistent with the model's predictions, the experiment shows that priming pure …. In the model agents receive heterogeneous utility from pure and impure altruism (Andreoni 1989) that permits warm glow to … vary between monetary donations and volunteering, thus allowing preferences for impure altruism to rationalize inefficient …

's common restrictions on the curvature of the decision-makers utility function can dramatically bias the altruism parameter. We … show that this is particularly problematic when comparing altruism between groups with well-documented differences in risk …