This paper reports a rigorous experimental test of Pareto-damaging behaviors. We introduce a new graphical representation of dictator games with step-shaped sets of feasible payoffs to persons self and other on which strongly Pareto efficient allocations involve substantial inequality. The...

Behavioral economics—arising from the insight that people make recognizable, systematic mistakes—has revolutionized policymaking. For example, in governments around the world, including the US, teams of experts have recently arisen to harness these insights, promising to do things like...