Department of Economics
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Indianapolis, IN 46202
Institutional Affiliations: IUPUI and IU Lilly Family School of Philanthropy
Information about this author at RePEc
NBER Working Papers and Publications
|August 2018||Impure Impact Giving: Theory and Evidence|
with Daniel M. Hungerman: w24940
We present a new model of charitable giving where individuals regard out-of-pocket donations and the matches they induce as different. We show that match-price elasticities combine conventional price effects with the strength of warm-glow, so that a match-price elasticity alone is insufficient to characterize preferences for giving. Match- and rebate-price elasticities will typically be different, but together they lead to tests of underlying giving preferences. We estimate, for the first time, a match-price elasticity together with a real-world tax-based rebate elasticity in a non-laboratory high-stakes setting. The estimates reject extant models of giving, but are consistent with the new theory.
|September 2014||Why Do People Give? Testing Pure and Impure Altruism|
with Lise Vesterlund, Huan Xie: w20497
The extant experimental design to investigate warm glow and altruism elicits a single measure of crowd-out. Not recognizing that impure altruism predicts crowd-out is a function of giving-by-others, this design's power to reject pure altruism varies with the level of giving-by-others, and it cannot identify the strength of warm glow and altruism preferences. These limitations are addressed with a new design that elicits crowd-out at a low and at a high level of giving-by-others. Consistent with impure altruism we find decreasing crowd-out as giving-by-others increases. However warm glow is weak in our experiment and altruism largely explains why people give.
Published: Mark Ottoni-Wilhelm & Lise Vesterlund & Huan Xie, 2017. "Why Do People Give? Testing Pure and Impure Altruism," American Economic Review, vol 107(11), pages 3617-3633. citation courtesy of