Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/162986
Authors: 
Hillenbrand, Adrian
Winter, Fabian
Year of Publication: 
2017
Series/Report no.: 
Preprints of the Max Planck Institute for Research on Collective Goods No. 2017/12
Publisher: 
Max Planck Institute for Research on Collective Goods, Bonn
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.
Document Type: 
Working Paper

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