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Field Before After
Last Published June 27, 2022 02:38 PM July 05, 2023 12:00 PM
Final Sample Size: Number of Clusters (Unit of Randomization) 83 solicitors
Was attrition correlated with treatment status? No
Final Sample Size: Total Number of Observations 6,973
Final Sample Size (or Number of Clusters) by Treatment Arms 29 NA pledge, 22 SA pledge, 32 FA pledge
Public Data URL
Program Files No Yes
Program Files URL
Is data available for public use? Yes
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Field Before After
Paper Abstract Given the replacement of cash with cell phone payments, people who are asked to donate to charity can easily promise a donation but delay the transfer until a later date. This may be a way to get out of the ask-situation with a positive image while maintaining the flexibility not to donate. This study explores whether charities can make people keep their promises by making such promises more explicit and more formal. In a door-to-door fund-raising field experiment, we vary the strength of the promise that donors make. Besides a control group where people can promise to donate, we apply two treatment groups. In the first treatment, donors are asked to verbally pledge a precise amount. In a second treatment, this amount is in addition put on paper with the solicitor’s signature added. Both treatments are aimed at making it morally more expensive not to keep promises. Our results show that: (1) the majority of people do not follow through on their promise to donate; (2) donors who pledge an explicit amount more often keep their promise. The more formal the commitment, the closer the amount donated is to the amount promised; (3) many participants refuse to pledge a donation amount when asked, and those who refuse donate significantly less.
Paper Citation Toke R. Fosgaard, Adriaan R. Soetevent, I will donate later! A field experiment on cell phone donations to charity, Journal of Economic Behavior & Organization, Volume 202, 2022, Pages 549-565, ISSN 0167-2681.
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