Do immigrants have better labor-market outcomes under Democratic governors? By exploiting variations associated with close elections in a regression discontinuity (RD) design applied on gubernatorial elections in 50 states over the last two decades, we find that immigrants are more likely to be...

This paper investigates the impact of schools banning mobile phones on student test scores. By surveying schools in four English cities regarding their mobile phone policies and combining it with administrative data, we find that student performance in high stakes exams significantly increases...

This study proposes a simple theory of trade with endogenous firm productivity, occupational choice, and income inequality. Individuals with different managerial talent choose to become self-employed entrepreneurs or workers. Entrepreneurs enhance firm productivity by investing in managerial...

We propose a simple theory of personal income distribution, equilibrium unemployment, and interindustry trade, in which product markets are perfectly competitive and labor markets exhibit search related frictions. Individuals, based on their managerial talent, choose to become self-employed...

This paper develops a two-country, two-sector model of trade where the only difference between two countries is the cost of human capital formation. It is shown that this difference completely shapes the pattern of trade. Trade, in turn, affects the distribution of human capital both at...

This paper develops a monopolistic competition model with heterogeneous firms to study the interaction between technology adoption and trade in a world of two countries facing different technology adoption costs. It shows that a reduction in the technology adoption cost in one country increases...

We analyze how fatal shootings in high schools affect schools and students using data from shooting databases, school report cards, and the Common Core of Data. We examine schools’ test scores, enrollment, and number of teachers, as well as graduation, attendance, and suspension rates at...

This paper investigates the impact of schools banning mobile phones on student test scores. By surveying schools in four English cities regarding their mobile phone policies and combining it with administrative data, we find that student performance in high stakes exams significantly increases...

In this paper, I analyze the time paths of the efficiencies of skilled and unskilled labor in a production framework where skilled and unskilled labor are imperfect substitutes. Their implications for economic growth and wage inequality in the US between 1950 and 2005 present two main findings....

This paper develops a fully endogenous, variety-expansion growth model with firm-specific quality heterogeneity, limit pricing, and an endogenous distribution of markups. Firms with high-quality products engage in exporting, firms with intermediate-quality products serve the domestic market, and...