Anonymity, Reciprocity, and Conformity: Evidence from Voluntary Contributions to a National Park in Costa Rica
Abstract
We investigate the role of anonymity, reciprocity, and conformity for voluntary contributions, based on a natural field experiment conducted at a national park in Costa Rica. Contributions made in public in front of the solicitor are 25% higher than contributions made in private. Giving subjects a small gift before requesting a contribution increases the likelihood of a positive contribution. At the same time, the conditional contribution decreases. The total effect of giving a gift is positive but small, and taking the cost of the gift into account, it is far from profitable. When the subjects are told that the typical contribution of others is $2 (a small contribution), the probability of a contribution increases and the conditional contribution decreases, compared with providing no reference information. Providing a high reference level ($10) increases the conditional contributions. Overall, the total effects have the expected signs, although the magnitudes are smaller than what one might have expected based on existing evidence from laboratory experiments.
University
Göteborg University, School of Business, Economics and Law
Institution
Department of Economics
Collections
View/ Open
Date
2007-02-21Author
Alpizar, Francisco
Carlsson, Fredrik
Johansson-Stenman, Olof
Keywords
Voluntary contributions
anonymity
reciprocity
conformity
natural field experiment
JEL C93
JEL Q50
Publication type
report
ISSN
1403-2465
Series/Report no.
Working Papers in Economics
no 245
Language
eng