Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/179909 
Title: 

Giving once, giving twice: A two-period field experiment on inter-temporal crowding in charitable giving

The document was removed on behalf of the author(s)/ the editor(s).

Year of Publication: 
2018
Series/Report no.: 
WZB Discussion Paper No. SP II 2017-305r
Version Description: 
Revised June 2018
Publisher: 
Wissenschaftszentrum Berlin für Sozialforschung (WZB), Berlin
Abstract: 
We study intertemporal crowding between two fundraising campaigns for the same charitable organization by manipulating donors’ beliefs about the likelihood of future campaigns in two subsequent field experiments. Theory predicts that the effect of such belief manipulations depends on whether multiple donations are perceived as substitutes or complements. In line with intuition, the data from our experiment in the first year suggests that multiple donations are substitutes and, consequently, that rendering future campaigns more likely causes crowding out. In the second year, however, we find that our belief manipulations no longer have an effect. When receiving a second fundraising call, donors learn that also future repetitions may occur. In contrast with theoretical predictions for substitutes, we find that year-2 donations are increasing in year-1 donations, that is, higher do-nations in an earlier campaign crowd in future donations.
Subjects: 
Charitable giving
field experiments
intertemporal crowding
JEL: 
C93
D64
D12
Document Type: 
Working Paper

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The document was removed on behalf of the author(s)/ the editor(s) on: December 13, 2018


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