 An experimental examination of the volunteer's dilemmaJacob Goeree, Charles Holt and Angela M. Smith Games and Economic Behavior, 2017, vol. 102, issue C, 303-315 Abstract: In a volunteer's dilemma, only one “volunteer” is needed to obtain a benefit for all. Volunteering is costly, and the symmetric Nash equilibrium involves randomization. These predictions have the intuitive property that volunteer rates decline with larger groups, but surprisingly, the probability of obtaining no volunteers is increasing with group size, even as the number of players goes to infinity. These predictions are evaluated in a laboratory experiment with a range of group sizes. Observed volunteer rates are lower with larger groups, as predicted, but the incidence of no-volunteer outcomes declines with group size, in contrast to theory. This reduction in no-volunteer outcomes for large groups can be explained by a one-parameter generalization of the Nash equilibrium that adds quantal response “noise” due to unobserved random effects. Significant individual heterogeneity in observed volunteer rates motivates the estimation of a heterogeneous equilibrium model with a distribution of propensities for volunteering. Keywords: Quantal response equilibrium; Volunteer's dilemma; Laboratory experiment; Heterogeneity (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:gamebe:v:102:y:2017:i:c:p:303-315 DOI: 10.1016/j.geb.2017.01.002 Access Statistics for this article Games and Economic Behavior is currently edited by E. Kalai More articles in Games and Economic Behavior from Elsevier |
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