The sustainability of the commons: giving and receiving
通过实验研究，分析在公共资源开采中引入免费奖励机制如何影响资源使用行为，发现给予与接受的联系有助于维持低开采水平，避免资源破坏。
Abstract This paper analyzes the use of a cost-free reward mechanism in the exploitation of a common property resource. We implement an experimental study involving a two-stages game where agents first decide resource appropriation and then have the opportunity to distribute cost-free bestowals. We observe that subjects link the two activities in such a way that appropriation determines the distribution of bestowals which in turn contributes maintaining low appropriation levels, thus avoiding the destruction of the common resource. Not all the potential bestowals are distributed, however.