"Human capital is typically viewed as generating a number of desirable outcomes, including economic growth. Yet, in spite of its importance, few empirical studies have explored why some economies accumulate more human capital than others. This paper attempts to do so using a sample of more than...

"Human capital-based theories of cities suggest that large, economically diverse urban agglomerations increase worker productivity by increasing the rate at which individuals acquire skills. One largely unexplored implication of this theory is that workers in big cities should see faster growth...

This paper identifies determinants of extensive (i.e., number of firms) and intensive (i.e., average exports per firm) trade margins, using state-level exports to 187 countries. A standard negative binomial count model is used to handle the issues of non-trading pairs and overdispersion in the...