Lawless, Martina (2008): Deconstructing Gravity: Trade Costs and Extensive and Intensive Margins.
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One of the most robust empirical results in international economics is the existence of a negative relationship between trade flows and distance. More recent research on exporting activity at the firm level has established an apparently equally robust result— few firms export, and exporting firms do not sell in all possible markets. This paper uses data on US exports across 156 countries to decompose exports to each market into the number of firms exporting (the extensive margin) and average export sales per firm (the intensive margin). We show how the effects of distance and a range of other proxies for trade costs have different impacts on the two margins. We find that distance has a negative effect on both margins, but the magnitude of the coefficient is considerably larger and more significant for the extensive margin. Most of the variables capturing language, internal geography, infrastructure and import cost barriers work solely through the extensive margin. We show that these results are consistent with the predictions of a Melitz-style model of trade with heterogeneous firm productivity and fixed costs.
|Item Type:||MPRA Paper|
|Original Title:||Deconstructing Gravity: Trade Costs and Extensive and Intensive Margins|
|Keywords:||Gravity Model of Trade; Heterogeneous Firms; Extensive Margin|
|Subjects:||F - International Economics > F1 - Trade > F14 - Empirical Studies of Trade|
|Depositing User:||Martina Lawless|
|Date Deposited:||30. Aug 2008 08:58|
|Last Modified:||12. Feb 2013 22:20|
Anderson, James and Eric van Wincoop (2003). “Gravity with Gravitas: A Solution to the Border Puzzle,” American Economic Review, 93, 170-92.
Anderson, James and Eric van Wincoop (2004). “Trade Costs,” Journal of Economic Literature, 42, 691-751.
Axtell, Robert (2001). “Zipf Distribution of US Firm Sizes,” Science, 7 September 2001, pp.1818-1820.
Bernard, Andrew and J. Bradford Jensen (1995). “Exporters, Jobs and Wages in US Manufacturing: 1976-1987” Brookings Papers on Economic Activity: Microeconomics, pages 67-112
Bernard, Andrew and J. Bradford Jensen (2004). “Why Do Some Firms Export?” Review of Economics and Statistics, 86, 561-569.
Bernard, Andrew, J. Bradford Jensen, Stephen Redding, and Peter Schott (2007). “Firms in International Trade,” Journal of Economic Perspectives, Vol 21, Summer, 105-130.
Chaney, Thomas (2008). “Distorted Gravity: The Intensive and Extensive Margins of International Trade”, American Economic Review, forthcoming.
Disdier, Anne-Celia and Keith Head (2008). “The Puzzling Persistence of the Distance Effect on Trade,” Review of Economics and Statistics, 90, 3748.
Djankov, Simeon, Caroline Freund and Cong S. Pham (2008). “Trading on Time”, Review of Economics and Statistics, forthcoming.
Eaton, Jonathan, Samuel Kortum and Francis Kramarz (2004). “Dissecting Trade: Firms, Industries and Export Destinations,” American Economic Review Vol. 94, No.2, pp. 150-152.
Gabaix, Xavier (1999). “Zipf’s Law for Cities: An Explanation,” Quarterly Journal of Economics, Vol.114, No.3, pp.739-67.
Helpman, Elhanen, Marc Melitz, and Stephen Yeaple (2004). “Export versus FDI with Heterogenous Firms,” American Economic Review, Vol. 94, 300-316. 20
Hummels, David (2001). “Time as a Trade Barrier”, Purdue University, mimeo.
Isard, Walter (1954). “Location Theory and Trade Theory: A Short-Run Analysis,” Quarterly Journal of Economics, Vol. 68, No.2, pp. 305-320.
Kortum, Samuel (1997). “Research, Patenting and Technological Change,” Economet- rica Vol.65, No.6, pp. 1389-1419.
Lawless, Martina (2007). “Firm Export Dynamics and the Geography of Trade,” Work- ing Paper 2/RT/07, Central Bank and Financial Services Authority of Ireland.
Melitz, Marc (2003). “The Impact of Trade on Intra-Industry Reallocations and Ag- gregate Industry Productivity”, Econometrica Vol. 71, No.6, pp. 1695-1725.
US Census Bureau (2008). A Profile of Exporting Firms, US Department of Commerce, Washington.