Communication, Renegotiation, and the Scope for Collusion
通过实验研究沟通在合谋中的作用，发现可信的惩罚威胁最有效促进合作，承诺也能改善合作，而重新谈判反而促进合谋。
We study the effect of communication in an experimental game where cooperation is consistent with equilibrium play if players share an understanding that cheating will be punished. Consistent with communication acting as a coordinating device, credible preplay threats to punish cheating are the most effective message to facilitate collusion. Promises to collude also improve cooperation. Credible threats do not occur in a treatment with a limited message space that permits threats of punishment. Contrary to some theoretical predictions, renegotiation possibilities facilitate collusion.