We show that warm-glow motives in provision by competing suppliers can lead to inefficient charity selection. In these … situations, discretionary donor choices can promote efficient charity selection even when provision outcomes are non …-competitive effect on charity selection, raising the value of charity provision per dollar of funding …

, preference elicitation allows us to focus on the reaction of donors characterized by different degrees of intrinsic motivation … intrinsic motivation, who received a reimbursement, reduce their donations more than four times as much as equally motivated …

towards the experimenters, (ii) the Crumpler and Grossman (2008) design, T2, in which the recipient is a charity, and the … third one, T3, with a charity recipient and no crowding out, which elicits both types of altruism. We use T1 to assess to … endowment. We also propose a new method of detecting warm glow motivation based on the idea that in a random-lottery incentive …

significant implications determining whether and how much people give. Drawing on the Identity-Based Motivation model (IBM …