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About the Author(s)


Arnaud Costinot is a research associate in the NBER International Trade and Investment Program. A professor of economics at MIT, he received his B.S. from École Polytechnique in 2000, his M.A. from École des Hautes Études en Sciences Sociales in 2001, and his Ph.D. from Princeton University in 2005. He is a co-editor of the Journal of International Economics, a foreign editor of the Review of Economic Studies, and an associate editor of the American Economic Review and the Journal of Economic Literature.

His research has focused on a variety of positive and normative issues in international trade, including the foundations of the theory of comparative advantage, the measurement of the welfare gains from trade, the role of intermediaries in international exchanges, the impact of global supply chains, and the design of optimal trade policy and capital controls.

Costinot grew up in Dunkirk, in the north of France. He currently lives in Brookline, Massachusetts, with his wife, Nadège, and their two children, Paul and Alice.


Dave Donaldson is a research associate in the NBER's Development Economics, Development of the American Economy, and International Trade and Investment Programs, and a professor of economics at MIT. He is a co-editor of the American Economic Journal: Applied Economics, an editorial board member of the Journal of Economic Literature, the Journal of International Economics, the Review of Economic Studies, and the Quarterly Journal of Economics, and a program director (for trade) at the International Growth Centre.

Donaldson has investigated the welfare and other effects of market integration, the impact of improvements in transportation infrastructure, how trade can mediate the effects of climate change, and how trade affects food security and famine. He has been awarded the 2017 John Bates Clark Medal, as well as an Alfred P. Sloan Research Fellowship, and has benefited from support from the National Science Foundation.

Donaldson is a native of Toronto. He received an undergraduate degree in physics from the University of Oxford and a Ph.D. from the London School of Economics. He lives in Boston with his wife, daughter, and three sons.


1. J. Eaton and S. Kortum, "Technology, Geography, and Trade," Econometrica, 70(5), 2002, pp. 1741-79.   Go to ⤴︎
2. A. Costinot, D. Donaldson, and I. Komunjer, "What Goods Do Countries Trade? A Quantitative Exploration of Ricardo's Ideas," NBER Working Paper 16262, August 2010, and Review of Economic Studies, 79(2), 2012, pp. 581-608.   Go to ⤴︎
3. A. Costinot and D. Donaldson, "Ricardo's Theory of Comparative Advantage: Old Idea, New Evidence," NBER Working Paper 17969, April 2012, and American Economic Review Papers and Proceedings, 102(3), 2012, pp. 453-8.   Go to ⤴︎
4. A. Costinot and D. Donaldson, "How Large Are the Gains from Economic Integration? Theory and Evidence from U.S. Agriculture, 1880-1997," NBER Working Paper 22946, December 2016.   Go to ⤴︎
5. A. Costinot, D. Donaldson, and C. Smith, "Evolving Comparative Advantage and the Impact of Climate Change in Agricultural Markets: Evidence from 1.7 Million Fields Around the World," NBER Working Paper 20079, April 2014, and Journal of Political Economy, 124(1), 2016, pp. 205-48.   Go to ⤴︎
6. J. S. Mill, Essays on Some Unsettled Questions in Political Economy, London: Longmans, Green, Reader, 1844; and Dyer, 2nd edition, 1874.   Go to ⤴︎
7. R. Adao, A. Costinot, and D. Donaldson, "Nonparametric Counterfactual Predictions in Neoclassical Models of International Trade," NBER Working Paper 21401, July 2015, and American Economic Review, 107(3), 2017, pp. 633-89.   Go to ⤴︎
8. C. Wilson, "On the General Structure of Ricardian Models with a Continuum of Goods: Applications to Growth, Tariff Theory, and Technical Change," Econometrica, 1980, 48(7), pp. 1675-702.   Go to ⤴︎
9. A. Costinot, D. Donaldson, J. Vogel, and I. Werning, "Comparative Advantage and Optimal Trade Policy," NBER Working Paper 19689, December 2013, and Quarterly Journal of Economics, 130(2), 2015, pp. 659-702.   Go to ⤴︎
10. S. Linder, An Essay on Trade and Transformation, Uppsala, Sweden: Almqvist & Wiksells, 1961; P. Krugman, "Scale Economies, Product Differentiation, and the Pattern of Trade," American Economic Review, 1980, 70(5), pp. 950-9.   Go to ⤴︎
11. Costinot, D. Donaldson, M. Kyle and H. Williams, "The More We Die, the More We Sell? A Simple Test of the Home-Market Effect," NBER Working Paper 22538, August 2016.   Go to ⤴︎
12. D. Acemoglu and J. Linn, "Market Size in Innovation: Theory and Evidence from the Pharmaceutical Industry," NBER Working Paper 10038, October 2003, and Quarterly Journal of Economics, 2004, 119(3), pp. 1049-90.   Go to ⤴︎
13. A. Costinot and J. Vogel, "Beyond Ricardo: Assignment Models in International Trade," NBER Working Paper 20585, October 2014, and Annual Review of Economics, 7, 2015, pp. 31-62; D. Donaldson, "The Gains from Market Integration," Annual Review of Economics, 7, 2015, pp. 619-47. Go to ⤴︎


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