Person:

Hanson, Gordon

This paper integrates daytime and nighttime satellite imagery into a spatial general-equilibrium model to evaluate the returns to investments in new motorways. Our approach has particular value in developing-country settings in which granular data on economic activity are scarce. To demonstrate our method, we use multi-spectral imagery—publicly available across the globe—to evaluate India’s varied road construction projects in the early 2000s. Estimating the model requires only remotely-sensed data, while evaluating welfare impacts requires one year of population data, which are increasingly available through public sources. We find that India’s road investments from this period improved aggregate welfare, particularly for the largest and smallest urban markets. The analysis further reveals that most welfare gains accrued within Indian districts, demonstrating the potential benefits of using of high spatial resolution of satellite images.

Job choice by high-skilled foreign-born workers in the US correlates strongly with country of origin. We apply a Fréchet-Roy model of occupational choice to evaluate the causes of immigrant sorting. In a gravity specification, we find that revealed comparative advantage in the US is stronger for workers from countries with higher education quality in occupations that are more intensive in cognitive reasoning, and for workers from countries that are more linguistically similar to the US in occupations that are more intensive in communication. Our findings hold for immigrants who arrived in the US at age 18 or older (who received their K-12 education abroad) but not for immigrants who arrived in the US as children (who received their K-12 education domestically). We obtain similar results for immigrant sorting in Canada, which supports our interpretation that origin-country education quality, rather than US immigration policy, is what drives sorting patterns. In counterfactual analysis, we evaluate the consequences of reallocating visas for college-educated immigrants according to origin-country education quality.