We experimentally examine whether communicating private signals after each stage game affects cooperation in an infinitely repeated two-player prisoner’s dilemma where players can only observe imperfect and private signals about the partner’s actions. Based on evidence from two...

When truth conflicts with efficiency, can verbal communication destroy efficiency? Or are lies or vagueness used to hide inconvenient truths? We consider a sequential 2-player public good game in which the leader has private information about the value of the public good. This value can be low,...