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Volunteering under population uncertainty

Adrian Hillenbrand and Fabian Winter ()

Games and Economic Behavior, 2018, vol. 109, issue C, 65-81

Abstract: There is ample evidence that the number of players can have an important impact on the cooperation and coordination behavior of people facing social dilemmas. With extremely few exceptions, the literature on cooperation assumes common knowledge about who is a player and how many players are involved in a certain situation. In this paper, we argue that this assumption is overly restrictive, and not even very common in real-world cooperation problems. We show theoretically and experimentally that uncertainty about the number of players in a Volunteer's Dilemma increases cooperation compared to a situation with a certain number of players. We identify additional behavioral mechanisms amplifying and impairing the effect.

Keywords: Population uncertainty; Volunteer's Dilemma; Coordination; Cooperation; Social norms; Group size uncertainty (search for similar items in EconPapers)
JEL-codes: D03 H41 C72 C92 (search for similar items in EconPapers)
Date: 2018
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Working Paper: Volunteering under Population Uncertainty (2017) Downloads
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