cooperation is shaped by the way information about risk is presented (from description or from experience) and by differences in … lotteries with equivalent levels of risk. Cooperation rates in games vary with different levels of risk across decision … stochastic social dilemmas than in the lotteries. The findings highlight how an uncertain environment shapes cooperation and call …

conflicts. A first experiment shows that a between-group conflict leads to within-group cooperation and particularly individuals … personal costs of within-group versus collective cooperation, supporting the weighted average social preference theory by …

efficiency. We find that the observed behavior is primarily determined by an imperfect conditional cooperation that prioritizes …

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. …

mutual exchange of promises is necessary for the cooperation-enhancing effect of communication, we ï¬nd that, compared to a …