An Application of the English Clock Market Mechanism to Public Goods Games
研究了公共物品博弈中采用时钟机制逐步提交贡献的方式，发现个体停止贡献的决定会立即引发其他成员的连锁反应，证实了条件合作行为的存在。
Abstract This paper reports an experimental study of the public goods game in which contributions are not submitted all at once but incrementally as coordinated in real time by a clock. Individuals press a button as soon as the clock equals their willingness to contribute. By providing information about the point at which subjects stop further contributions we find evidence for conditionally cooperative behaviour: A subject's decision to stop contributing induces an immediate reaction of the other group members.