Charness and Dufwenberg (American Economic Review, June 2011, 1211-1237) have recently demonstrated that cheap-talk communication raises efficiency in bilateral contracting situations with adverse selection. We replicate their finding and check its robustness by introducing competition between...

Costless pre-play communication has been found to effectively facilitate coordination and enhance efficiency in games with Pareto-ranked equilibria. We report an experiment in which two groups compete in a weakest-link contest by expending costly efforts. Allowing intra-group communication leads...

Costless pre-play communication has been shown to effectively facilitate within-group coordination. However, in competitive coordination games, such as rent-seeking contests, better within-group coordination leads to more aggressive competition and lower efficiency. We report an experiment in...