We report on an experiment using video technology to study effects of communication on donations to and discrimination … communicate with an anonymous dictator before the latter decides on her gifts. Through the use of three communication setups (none …, audio, and audio-visual) we analyze purely social effects of communication. A silent video channel leads to discrimination …

-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 …