Filter Results:
- Full text PDF available (43)
Publication Year
1993
2018
- This year (0)
- Last 5 years (17)
- Last 10 years (35)
Supplemental Content
Publication Type
Co-author
Journals and Conferences
Learn More
Large economies export more in absolute terms than do small economies. We use data on shipments by 126 exporting countries to 59 importing countries in 5,000 product categories to answer the… (More)
- David Hummels, Jun Ishii, K F Yi
- 1999
Dramatic changes are occurring in the nature of international trade. Production processes increasingly involve a sequential, vertical trading chain stretching across many countries, with each country… (More)
- David Hummels
- 1999
What are the barriers that separate nations? While recent work provides intriguing clues, we have remarkably little concrete evidence as to the nature, size, and shape of barriers. This paper offers… (More)
- David Hummels
- 2013
A large and growing share of international trade is carried on airplanes. Air cargo is many times more expensive than maritime transport but arrives in destination markets much faster. We model… (More)
- David Hummels
- 2007
While the precise causes of postwar trade growth are not well understood, declines in transport costs top the lists of usual suspects. However, there is remarkably little systematic evidence… (More)
We model demand for quality differentiated goods to derive a relationship between trade costs and the quality composition of trade. Detailed data on traded goods' prices, quantities and shipping… (More)
- David Hummels
- 2003
July 1999
While the precise causes of post-war trade growth are not well understood, declines in transport costs top the lists of usual suspects. However, there is remarkably little systematic… (More)
In this paper, we test some propositions about international trade flows that are derived from a model of monopolistic competition developed by Elhanan Helpman. We investigate whether the volume of… (More)
Abstract Computable General Equilibrium models, widely used for the analysis of Free Trade Agreements, are often criticized for having poor econometric foundations. This paper improves the linkage… (More)
- David Hummels, Dana Rapoport, K F Yi
- 1998
The author summarizes the literature on the relative performance of public and private schools over the past decade and assesses what we have learned from these studies. Although many questions… (More)