Fig. A.2.

Distribution of prosociality: willingness to expose others to risk. Note: The figure shows the distribution of our measure of prosociality. We construct this measure based on the five choices in the Risk Dictator Game. Let $r(c_{i,g})\in \{0,0.2,0.4,0.6,0.8,1\}$ be the risk participant i puts on the other player in game $g\in \{1,\dots ,5\}$. We measure i’s prosociality as $1-1/5{\sum }_{g=1}^{5}r(c_{i,g})$, that is, one minus the average risk she puts on the other player. The measure has a value of 1 if the participant always choose the option that puts no risk on the other player, and 0 if the participant always choose the option that puts the maximal risk on the other player.