Communication and Cooperation in Social Dilemmas: A Meta-Analytic Review

Among the most researched solutions to social dilemmas is communication. Since the late 1950s, it has been well known that communication enhances cooperation in social dilemmas. This article reports a meta-analysis of this literature (forty-five effect sizes) and finds a large positive effect of communication on cooperation in social dilemmas ( d = 1.01). This effect is moderated by the type of communication, with a stronger effect of...