Data Website for "Transportation Costs and International Trade in the Second Era of Globalization", Journal of Economic Perspectives, Vol 21, No 3, pp 131-154.
Hummels Working Papers
Under Submission
Explaining Import Variety and Quality: The Role of the Income Distribution
In progress
Time as a Trade Barrier
Toward a Geography of Trade Costs
Forthcoming or Recently Published
International Pricing in a Generalized Model of Ideal Variety, forthcoming Journal of Money, Credit, and Banking.
The Trade Reducing Effects of Market Power in International Shipping, forthcoming Journal of Development Economics
Trade Responses to Geographic Frictions: A Decomposition Using MicroData , European Economic Review 52 (2008) pp. 527-550. (with Russell Hillberry)
Transportation Costs and International Trade in the Second Era of Globalization (formerly: Have International Transportation Costs Declined?), Journal of Economic Perspectives 21 (2007) pp. 131-154.
How Confident can we be in CGE-Based Assessments of Regional Trading Agreements? forthcoming Economic Modeling 24 (2007) pp. 611-635. (w/ Tom Hertel, Maros Ivanic, Roman Keeney),
The Variety and Quality of a Nation's Exports (American Economic Review 95 (2005) 704-723)
Shipping the Good Apples Out? An Empirical Confirmation of the Alchian-Allen Conjecture (Journal of Political Economy 112 (2004) 1384-1402)
Usable Data? Matched Partner Trade Statistics as a Measure of International Transportation Costs (forthcoming Review of International Economics, Feburary 2006)
A Virtuous Circle? Regional Tariff Liberalization and Scale Economies in Transport ( in FTAA and Beyond: Prospects for Integration in the America. (eds. Estevadeordal, Rodrik, Taylor, Velasco), Harvard University Press. (2004) (with Alexandre Skiba)
Alternative Hypotheses and the Volume of Trade: Evidence on the Extent of Specialization, Canadian Journal of Economics, 37 (2004).
Intra-national Home Bias: Some Explanations , Review of Economics and Statistics, 85 (2003) 1089-1092