COMBINING MONETARY AND SOCIAL SANCTIONS TO PROMOTE COOPERATION
通过实验研究，发现同时使用正式（货币）和非正式（社会）制裁时，公共品贡献和整体福利高于仅使用一种制裁，且多种严重程度不同的制裁组合能进一步提升福利。
We employ an experimental approach to consider the impact of a combination of formal and informal sanctions on contribution levels for a specific type of public good. We find that when both sanctions are available, contributions and overall welfare are higher than when only one of the two sanctioning systems is available. The availability of an array of sanctions of varying severity appears to enhance welfare.