Search Results
Working Paper
Revisiting Capital-Skill Complementarity, Inequality, and Labor Share
This paper revisits capital-skill complementarity and inequality, as in Krusell, Ohanian, Rios-Rull and Violante (KORV, 2000). Using their methodology, we study how well the KORV model accounts for more recent data, including the large changes in the labor's share of income that were not present in KORV. We study both labor share of gross income (as in KORV), and income net of depreciation. We also use nonfarm business sector output as an alternative measure of production to real GDP. We find strong evidence for continued capital-skill complementarity in the most recent data, and we also find ...
Working Paper
The Evolution of Comparative Advantage: Measurement and Implications
We estimate productivities at the sector level for 72 countries and 5 decades, and examine how they evolve over time in both developed and developing countries. In both country groups, comparative advantage has become weaker: productivity grew systematically faster in sectors that were initially at greater comparative disadvantage. These changes have had a significant impact on trade volumes and patterns, and a non-negligible welfare impact. In the counterfactual scenario in which each country's comparative advantage remained the same as in the 1960s, and technology in all sectors grew at the ...
Working Paper
Capital-Task Complementarity and the Decline of the U.S. Labor Share of Income
This paper provides evidence that shifts in the occupational composition of the U.S. workforce are the most important factor explaining the trend decline in the labor share over the past four decades. Estimates suggest that while there is unitary elasticity between equipment capital and non-routine tasks, equipment capital and routine tasks are highly substitutable. Through the lenses of a general equilibrium model with occupational choice and the estimated production technology, I document that the fall in relative price of equipment capital alone can explain 72 percent of the observed ...
Working Paper
Technological innovation in mortgage underwriting and the growth in credit, 1985–2015
The application of information technology to finance, or ?fintech,? is expected to revolutionize many aspects of borrowing and lending in the future, but technology has been reshaping consumer and mortgage lending for many years. During the 1990s, computerization allowed mortgage lenders to reduce loan-processing times and largely replace human-based assessments of credit risk with default predictions generated by sophisticated empirical models. Debt-to-income ratios at origination add little to the predictive power of these models, so the new automated underwriting systems allowed higher ...
Working Paper
Indivisibilities in Distribution
This paper develops and estimates a model of indivisibilities in shipping and economies of scale in consolidation. It uses highly detailed data on imports where it is possible to observe the contents of individual containers. In the model, ?rms are able to adapt to indivisibility constraints by using consolidation strategies and by making adjustments to shipment size. The ?rm determines the optimal number of domestic ports to use, taking into account that adding more ports lowers inland freight cost, at the expense of a higher indivisibility cost. The estimated model is able to roughly ...
Working Paper
Technological Innovation in Mortgage Underwriting and the Growth in Credit: 1985-2015
The application of information technology to finance, or ?fintech,? is expected to revolutionize many aspects of borrowing and lending in the future, but technology has been reshaping consumer and mortgage lending for many years. During the 1990s computerization allowed mortgage lenders to reduce loan-processing times and largely replace human-based assessment of credit risk with default predictions generated by sophisticated empirical models. Debt-to-income ratios at origination add little to the predictive power of these models, so the new automated underwriting systems allowed higher ...
Report
The Long-Term Rise of Labor Market Detachment: Evidence from Local Labor Markets
We develop a measure of chronic joblessness among prime-age men and women in the United States—termed the detachment rate— that identifies those who have been out of the labor force for more than a year. We show that the detachment rate more than doubled for men since the early 1980s and rose by a quarter for women since 2000, though it is consistently considerably higher for women than men. We then explore the economic geography of labor market detachment to help explain its rise. Results show that the detachment rate increased more in places with weak local economies, particularly those ...
Working Paper
Technological Change and Financial Innovation in Banking: Some Implications for Fintech
Financial intermediation has changed dramatically over the past 30 years, due in large part to technological change. The paper first describes the role of the financial system in a modern economy and how technological change and financial innovation can affect social welfare. We then survey the empirical literatures relating to several specific financial innovations, broadly categorized as new production processes, new products or services, or new organizational forms. In each case, we also include examples of significant fintech innovations that are transforming various aspects of banking. ...
Analyzing the Impact of Programming Skills on Career Outcomes of Software Engineers
The most asked question in any computer science forum is “Which programming language is the best?.” Searching this question on Google yields more than 8 billion results. Reddit alone shows over 19 million results. Another way to ask this question is: Which programming language leads to better career outcomes?
Working Paper
The Role of Technology and Energy Substitution in Climate Change Mitigation
Mitigating climate change is critically linked to reducing an economy’s reliance on fossil energy. This paper examines U.S. energy dependence, measured by its factor share, using a neoclassical framework in a systematic way. We propose substitution as a simple, explicit economic mechanism for climate change mitigation and understanding energy-saving technical change in terms of observed factor quantities. We show that with time-varying capital equipment and energy substitutability, changes in observed inputs alone can account for most of the variations in the income share of energy over the ...