Life expectancy around the world has increased substantially since 1970. In contrast, consump-tion per capita has fallen in some countries, remained stagnant, or sharply increased in others.What are the welfare gains of the systematic increase in life expectancy around the world? Howdoes a "full...

The evidence strongly suggests a robust negative relationship between income and fertility, and a positive relationship between income and longevity. This is puzzling for standard dynamic models. For instance, altruistic models that use the most standard preferences in macro --time separable...

The evidence strongly suggests a robust negative relationship between income and fertility, anda positive relationship between income and longevity. This is puzzling for standard dynamicmodels. For instance, altruistic models that use the most standard preferences in macro-timeseparable CRRA...

This paper provides a theory that explains the cross-country distribution of average years of schooling, as well as the so called human capital premium puzzle. In our theory, credit frictions as well as differences in access to public education, fertility and mortality turn out to be the key...

Lucas (2004) asserts that "Of the tendencies that are harmful to sound economics, the most seductive, and in my opinion the most poisonous, is to focus on questions of distribution... The potential for improving the lives of poor people by finding different ways of distributing current...

We develop a tractable general equilibrium model of oligopolistic competition that allows for endogenous product differentiation and exhibits various forms of competition, ranging from perfect to monopolistic competition, simultaneously. Our unified framework provides a novel way to integrate...

Theoretical studies have shown that under unorthodox assumptions on preference and production technologies, collateral constraints can act as a powerful amplification and propagation mechanism of exogenous shocks. We investigate whether or not this result holds under more standard assumptions....