Several recent studies have examined the steady-state welfare implications of mortality differentials within unfunded Social Security systems, concluding that these differentials undermine the progressivity of the system and make society worse-off relative to alternative public pension schemes....

We study the general equilibrium properties of two growth models with overlapping generations, habit formation and endogenous fertility. In the neoclassical model, habits modify the economy's growth rate and generate transitional dynamics in fertility; station- ary income per capita is...