NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH
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Impure Impact Giving: Theory and Evidence

Daniel M. Hungerman, Mark Ottoni-Wilhelm

NBER Working Paper No. 24940
Issued in August 2018
NBER Program(s):Public Economics

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.

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Document Object Identifier (DOI): 10.3386/w24940

 
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