"Why do some countries succeed while others struggle? Why are some firms profitable while rivals fail? Why do some marriages thrive and others end in divorce? These questions seem unrelated, but societies, companies, and marriages have one important thing in common: they involve more than one...

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...