Funding a new bridge in rural Vietnam: a field experiment on social influence and default contributions

Peer Reviewed
8 June 2015

Fredrik Carlsson, Olof Johansson-Stenman, Pham Khanh Nam

Public goods provision is essential for economic development. Yet there is limited evidence regarding contributions to local public goods in developing countries. This article analyses a field experiment where all 200 households in a village in rural Vietnam make real contributions to a public good that is very important for them in daily life—a bridge. We study the role of social influence (that people may be more willing to co-operate if others do) and the effects of the default alternative in the choice situation. We find significant and substantial (in the order of magnitude of 15–25%) effects of both social influence and defaults but only when providing low reference or default contributions.

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Carlsson, F., Johansson-Stenman, O., & Khanh Nam, P. (2015). Funding a new bridge in rural Vietnam: a field experiment on social influence and default contributions. Oxford Economic Papers, 67(4), 987–1014. doi:10.1093/oep/gpv039

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Publication | 1 May 2020