Anonymity, Reciprocity, And Conformity: Evidence From Voluntary Contributions To A National Park In Costa Rica
Alpizar, Francisco; Carlsson, Fredrik; Johansson-Stenman, Olof, (2008). Anonymity, Reciprocity, And Conformity: Evidence From Voluntary Contributions To A National Park In Costa Rica. Journal Of Public Economics, 92, 5-6, 1047–1060.
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Type of evidence: Field-exp-charity
Related tools: Reveal previous donations
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Paper summary
“We have interviewed tourists from many different countries and one of the most common donations has been 2/5/10 US dollars.” [Or no statement]
Impact of 'previous' primed contribution:
- $2 prime: most likely to donate, significant
- $10 prime: largest contribution, conditional on contributing
- Net effect is not clearly statistically significant
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Citations: 111
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