An attempt to quantify possible negative effects of external crises in emerging market economies is made in this paper. The direct and indirect effects of the external crises, here sudden stops in capital flows and currency crises, are estimated and compounded into composite overall effects. In...

I show that in a conventional Ramsey model, between one-fourth and one- half of income differences across countries can be explained by a single factor: The steady-state effect of large, persistent differences in national average IQ on worker productivity. These differences in cognitive...