situations give way to more positive (near-)efficient ones when assortativity, instead of random mixing, governs the matching … process in the population. Under assortative matching, agents contribute more than what would otherwise be strategically …

When providing public goods through voluntary contributions, a donor may introduce unilateral matching in order to … reduce underprovision of the public good and thus inefficiency. By itself, however, matching benefits the donor but harms the …

-enforcement by Buchholz et al. (2014) in a laboratory experiment. Based on their theory without central authority and endogenously …

contributions are tied to individual harm-related behavior. We conduct a large-scaled field experiment to examine voluntary … payoff structure by introducing different matching grants (1/3:1, 1:1, 3:1) and price rebates (r-25%, r-50%, r-75%). Our … results show that price rebates are more effective than matching schemes in raising participation rates while matching grants …