Why do people in rich countries not transfer more of their income to people in the world's poorest countries? To study this question and the relative importance of needs, entitlements, and nationality in people's social preferences, we conducted a real effort fairness experiment where people in...

By incorporating positional dynamics into a conflict model relevant to battlefields and politics, we show that the conditions that induce regime stability can also induce hard conflicts. We show that in contests with incumbent-challenger turnover, i) asymmetric power across groups and positions...

Coordination in collective wage setting can constrain potential monopoly gains to unions in non-traded-goods industries. Countries with national wage coordination can thus stabilize overall employment against fluctuations and shocks in the world economy. We test this theory by exploring...