Public goods experiments are notable in that they produce an array of systematic treatment effects that are inconsistent with the predictions of standard game theory. In response, theorists have proposed alternative models designed to explain these interesting (and often intuitive) patterns in...

We present and experimentally test a mechanism that provides a simple, natural, low cost, and realistic solution to the problem of compliance with socially determined efficient actions, such as contributing to a public good. We note that small self-governing organizations often place enforcement...