Costless pre-play communication has been shown to effectively facilitate within-group coordination. However, in … costly efforts. We find that allowing within-group communication makes groups compete more aggressively. When only one group …. However, the communicating group earns payoffs that are not different from the baseline contest without any communication …

-binding communication among responders can help coordinate their collective resistance against a leader who transgresses against them …. Contrary to the predictions of analysis based on purely self-regarding preferences, we find that non-binding communication …, we find that the incidence of no transgression increases from 7 percent with no communication up to 25-37 percent …

-binding communication among responders can help coordinate their collective resistance against a leader who transgresses against them …. Contrary to the predictions of analysis based on purely self-regarding preferences, we find that non-binding communication …, we find that the incidence of no transgression increases from 7 percent with no communication up to 25-37 percent …