, constitutions help to solve coordination problems, not cooperation problems. …

We develop a model that relates self-control and conflict identification to cooperation patterns in social dilemmas. As … of cooperation. This means that there is evidence for an impulse to be selfish and that cooperative behavior requires …

opportunity for profitable cooperation. Our experimental method creates two groups of subjects who are similar but have different … long-run losses. Initially similar, cooperation rates for groups with different intelligence levels diverge, declining in … groups of lower intelligence, and increasing to reach almost full cooperation levels in groups of higher intelligence …

of universal cooperation because the more prosocial subjects populate the two efficient institutions first, elect … prosocial judges (if institutionally possible), and immediately establish a social norm of high cooperation. This norm appears … to guide subjects’ cooperation and punishment choices, including the virtually complete removal of antisocial punishment …

A large-scale economic experiment, conducted on a representative sample of the US popula- tion, shows that cooperation … show that the effect of cooperation is strongly associated with political affiliation, with Democrats attaching … significantly more importance to cooperation as a source of moral obligation than Republicans. Our findings shed light on the …