cooperation. In between two identical public goods games, participants play a mini dictator game that, depending on the treatment …

We report on an experiment designed to explore whether and how anger affects future levels of cooperation. Participants … that although anger has a lasting negative effect on cooperation, giving voice to it helps to curtail selfishness. …

's words is assessed by assigning exogenously the role of the "communicator" to one group member. Contrary to the view that the … mutual exchange of promises is necessary for the cooperation-enhancing effect of communication, we ï¬nd that, compared to a …