Greed and fear: Competitive and charitable priming in a threshold volunteer's dilemma
实验研究在k-志愿者困境中，当阈值从1增加到2时，志愿者行为的变化，以及竞争或慈善启动对行为的影响。发现提高阈值增加个人志愿概率但降低成功供给率，竞争启动在阈值2时有效提高志愿行为。
Abstract In the “ k ‐volunteer's dilemma” benefit accrues to all members if at least k members volunteer, and receive nothing otherwise. We use experiments to examine (a) volunteering behavior when threshold k increases from 1 to 2, and (b) whether volunteering behavior shifts toward norms associated with one of two primed identities—charitable or competitive. We find that increasing the threshold increases an individual's probability of volunteering, but the likelihood of good provision is lower. Neither priming affects volunteering behavior when k = 1, but competitive priming effectively increases volunteering when k = 2. Both greed and fear of non‐provision appear to affect volunteering.