Voluntary Association in Public Goods Experiments: Reciprocity, Mimicry and Efficiency
通过公共品实验，研究允许参与者根据他人过往贡献选择合作伙伴的自愿结社机制，发现该机制能显著提高贡献水平和效率，并与惩罚机制进行了比较。
We study the. Incentive effects of endogenous group formation in a voluntary contributon experiment. Subjects are given information on the past contributions of others and allowed to express a preference for partners. On the basis of the stated preferences new groups are formed. We find that the opportunity to form new groups increases both contributions and efficiency. \\Ve also compare the regrouping mechanism with a mechanism allowing targeted reductions of others' earnings („punishmenf“). In the experiment; both mechanisms increase contribution levels significantly, but only endogenous grouping or the combination of the two increase efficiency significantly.