crucial in promoting large-scale cooperation. …

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 …

“divided loyalties” and “conditional cooperation” perspectives – that give opposite predictions about how individuals will …

cooperation between these two. Interestingly, there is an external effect of insider communication: the first player who is … among three players. The baseline treatment with no communication shows that the first and second players send significant … amounts and the third player reciprocates. Allowing insider communication between the second and the third players increases …

This experiment studies the internal and external effects of communication in a multilevel trust game. In this trust … allocation among the three players. The baseline treatment with no communication shows that the first and second players send … significant amounts and the third player reciprocates. When we allow communication only between the second and third players, the …

indefinitely repeated. Cooperation did not increase when subjects could send public messages amounting to binding promises of …