We report on an experiment using video technology to manipulate pre-play communication protocols in the lab and to … study purely social effects of communication on donations and discrimination between potential receivers. The experimental … the latter decides on her gifts. Through the use of three communication setups (none, audio, and audio-visual) we show and …

Within-group communication in competitive coordination games has been shown to increase competition between groups and … lower efficiency. This study further explores potentially harmful effects of communication, by addressing the questions of … (i) asymmetric communication and (ii) the endogenous emergence of communication. Our theoretical analysis provides …