Donald R. Davis
Columbia University
Publications 48
#1Jonathan I. Dingel (U of C: University of Chicago)H-Index: 4
#2Antonio Miscio (Boston Consulting Group)H-Index: 3
Last.Donald R. Davis (Columbia University)H-Index: 25
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Abstract In developed economies, agglomeration is skill-biased: larger cities are skill-abundant and exhibit higher skilled wage premia. This paper characterizes the spatial distributions of skills in Brazil, China, and India. To facilitate comparisons with developed-economy findings, we construct metropolitan areas for each of these economies by aggregating finer geographic units on the basis of contiguous areas of light in nighttime satellite images. Our results validate this procedure. These ...
#1Donald R. Davis (Columbia University)H-Index: 25
#2Jonathan I. Dingel (U of C: University of Chicago)H-Index: 4
Leading empiricists and theorists of cities have recently argued that the generation and exchange of ideas must play a more central role in the analysis of cities. This paper develops the first system of cities model with costly idea exchange as the agglomeration force. Our model replicates a broad set of established facts about the cross section of cities. It provides the first spatial equilibrium theory of why skill premia are higher in larger cities, how variation in these premia emerges from...
We provide measures of ethnic and racial segregation in urban consumption. Using Yelp reviews, we estimate how spatial and social frictions influence restaurant visits within New York City. Transit time plays a first-order role in consumption choices, so consumption segregation partly reflects residential segregation. Social frictions also affect restaurant choices: individuals are less likely to visit venues in neighborhoods demographically different from their own. While spatial and social fri...
#1Donald R. Davis (NBER: National Bureau of Economic Research)H-Index: 25
#2Jonathan I. Dingel (U of C: University of Chicago)H-Index: 4
What determines the distributions of skills, occupations, and industries across cities? We develop a theory to jointly address these fundamental questions about the spatial organization of economies. Our model incorporates a system of cities, their internal urban structures, and a high-dimensional theory of factor-driven comparative advantage. It predicts that larger cities will be skill-abundant and specialize in skill-intensive activities according to the monotone likelihood ratio property. We...
#1Mary Amiti (Federal Reserve Bank of New York)H-Index: 25
#2Donald R. Davis (NBER: National Bureau of Economic Research)H-Index: 25
In a sharp departure from earlier trends, the price of U.S. imports from China rose 6 percent in the 2006-08 period. To explore the forces behind this surprising increase, the authors create a new import index that uses highly disaggregated data to track price developments in different product types. The index reveals that the largest price increases were concentrated in industrial supplies - goods that rely heavily on commodity inputs. The authors conclude that the surge in commodity prices thr...
#1Mary Amiti (Federal Reserve Bank of New York)H-Index: 25
#2Donald R. Davis (Columbia University)H-Index: 25
How does trade liberalization affect wages? This is the first paper to consider in theory and data how the impact of final and intermediate input tariff cuts on workers' wages varies with the global engagement of their firm. Our model predicts that a fall in output tariffs lowers wages at import-competing firms, but boosts wages at exporting firms. Similarly, a fall in input tariffs raises wages at import-using firms relative to those at firms that only source locally. Using highly detailed Indo...
#1Donald R. DavisH-Index: 25
#2David E. WeinsteinH-Index: 33
The dominant paradigm of world trade patterns posits two principal features. Trade between North and South arises due to traditional comparative advantage. Trade within the North, largely intra-industry trade, is based on economies of scale and product differentiation. The paradigm specifically denies an important role for endowment differences in determining North–North trade. We demonstrate that trade in factor services among countries of the North is systematically related to endowment differ...
How do labor markets adjust to trade liberalization? Leading models of intraindustry trade (Krugman (1981), Melitz (2003)) assume homogeneous workers and full employment, and thus predict that all workers win from trade liberalization, a conclusion at odds with the public debate. Our paper develops a new model that merges Melitz (2003) with Shapiro and Stiglitz (1984), so also links product market churning to labor market churning. Workers care about their jobs because the model features aggrega...