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When should the ask be a nudge? The Effect of Default Amounts on Charitable Donations

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  • Indranil Goswami
  • Oleg Urminsky

Abstract

How does setting a donation option as the default in a charitable appeal affect people's decisions? In eight studies, comprising 11,508 participants making 2,423 donation decisions in both experimental settings and a large scale-natural field experiment, we investigate the effect of "choice-option" defaults on the donation rate, average donation amount, and the resulting revenue. We find (1) a "lower-bar" effect, where defaulting a low amount increases donation rate, (2) a "scale-back" effect where low defaults reduce average donation amounts and (3) a "default-distraction' effect, where introducing any defaults reduces the effect of other cues, such as positive charity information. Contrary to the view that setting defaults will backfire, defaults increased revenue in our field study. However, our findings suggest that defaults can sometimes be a "self-cancelling" intervention, with countervailing effects of default option magnitude on decisions and resulting in no net effect on revenue. We discuss the implications of our findings for research on fundraising specifically, for choice architecture and behavioral interventions more generally, as well as for the use of "nudges" in policy decisions.

Suggested Citation

  • Indranil Goswami & Oleg Urminsky, 2016. "When should the ask be a nudge? The Effect of Default Amounts on Charitable Donations," Natural Field Experiments 00659, The Field Experiments Website.
  • Handle: RePEc:feb:natura:00659
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