The Impact of Group Membership on Cooperation and Norm Enforcement: Evidence Using Random Assignment to Real Social Groups
通过随机分配参与者到真实社会群体，研究群体成员身份如何影响合作行为和对规范的执行，对理解群体内偏好和规范执行机制有参考价值。
The Impact of Group Membership on Cooperation and Norm Enforcement: Evidence Using Random Assignment to Real Social Groups by Lorenz Goette, David Huffman and Stephan Meier. Published in volume 96, issue 2, pages 212-216 of American Economic Review, May 2006