Let a society’s unhappiness be measured by the aggregate of the levels of relative deprivation of its members. When two societies of equal size, F and M, merge, unhappiness in the merged society is shown to be higher than the sum of the levels of unhappiness in the constituent societies when...

This paper asks whether population growth is conducive to the sustainability of cooperation. A simple model is developed in which farmers who live around a circular lake engage in trade with their adjacent neighbors. The payoffs from this activity are governed by a prisoner’s dilemma “rule...

The naturalization of asylum seekers is modeled as an economic problem. In choosing their level of investment in host-country-specific human capital, asylum seekers take into consideration the probability of their being naturalized. The government of the host country chooses the probability of...