-known commitment problem by introducing communication. Allowing the upstream firm to chat privately with each downstream firm reduces … total offered quantity from near the Cournot level (observed in the absence of communication) halfway toward the monopoly … bargaining advantage from open communication that all of the gains from monopolizing the market accrue to them. A simple …

Case studies of cartels and recent theory suggest that repeated communication is key for stable cooperation in … understood. We study cooperation under different monitoring and communication structures in the laboratory. Under all monitoring … environments where signals about others' actions are noisy. However, empirically the exact role of communication is not well …