High-skilled emigration has been found to affect developing economies via different channels. With a calibrated general equilibrium framework, this paper finds that the short-run impact of brain drain on resident human capital is extremely crucial, as it does not only determine the number of...

Transition economies have an initial condition of high human capital relative to GDP per capita, giving them high growth potential. In the model, at a good equilibrium a large number of children of well-educated parents take advantage of their family backgrounds and invest substantially in their...

Economists long have argued that the severe sex imbalance that exists in many developing countries is caused by underlying economic conditions. This paper uses plausibly exogenous increases in sex-specific agricultural income caused by post-Mao reforms in China to estimate the effects of total...

We study the relationship between geography and growth. To do so, we first develop a dynamic spatial growth theory with realistic geography. We characterize the model and its balanced growth path and propose a methodology to analyze equilibria with different levels of migration frictions. We...

This paper documents a stylized fact not well appreciated in the literature. The Third World has been undergoing an emigration life cycle since the 1960s, and, except for Africa, emigration rates have been level or even declining since a peak in the late 1980s the early 1990s. The current...

This paper uses survey data from 13 countries to document the economic lives of the poor (those living on less than $2 dollar per day per capita at purchasing power parity) or the extremely poor (those living on less than $1 dollar per day). We describe their patterns of consumption and income...

This paper models how migration both influences and responds to differences in disease prevalence between cities, regions and countries, and show how the possibility of migration away from high-prevalence areas affects long-run steady state disease prevalence. We develop a dynamic framework...

Does the pattern of social connections between individuals matter for macroeconomic outcomes? If so, how does this effect operate and how big is it? Using network analysis tools, we explore how different social structures affect technology diffusion and thereby a country’s rate of...