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Stages of Diversification

  • Jean Imbs
  • Romain Wacziarg

This paper studies the evolution of sectoral concentration in relation to the level of per capita income. We show that various measures of sectoral concentration follow a U-shaped pattern across a wide variety of data sources: countries first diversify, in the sense that economic activity is spread more equally across sectors, but there exists, relatively late in the development process, a point at which they start specializing again. We discuss this finding in light of existing theories of trade and growth, which generally predict a monotonic relationship between income and diversification.

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File URL: http://www.aeaweb.org/articles.php?doi=10.1257/000282803321455160
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Article provided by American Economic Association in its journal American Economic Review.

Volume (Year): 93 (2003)
Issue (Month): 1 (March)
Pages: 63-86

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Handle: RePEc:aea:aecrev:v:93:y:2003:i:1:p:63-86
Note: DOI: 10.1257/000282803321455160
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  1. Paul Krugman, 1992. "Geography and Trade," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262610868, June.
  2. Krugman, Paul & Venables, Anthony J, 1994. "Globalization and the Inequality of Nations," CEPR Discussion Papers 1015, C.E.P.R. Discussion Papers.
  3. Lucas, Robert Jr., 1988. "On the mechanics of economic development," Journal of Monetary Economics, Elsevier, vol. 22(1), pages 3-42, July.
  4. Jean Imbs & Romain Wacziarg, 2003. "Stages of Diversification," American Economic Review, American Economic Association, vol. 93(1), pages 63-86, March.
  5. Sebnem Kalemli-Ozcan & Bent E. Sørensen & Oved Yosha, 2003. "Risk Sharing and Industrial Specialization: Regional and International Evidence," American Economic Review, American Economic Association, vol. 93(3), pages 903-918, June.
  6. Bougheas, Spiros & Demetriades, Panicos O. & Morgenroth, Edgar L. W., 1999. "Infrastructure, transport costs and trade," Journal of International Economics, Elsevier, vol. 47(1), pages 169-189, February.
  7. R. Dornbusch & S. Fischer & P. A. Samuelson, 1976. "Comparative Advantage, Trade and Payments in a Ricardian Model With a Continuum of Goods," Working papers 178, Massachusetts Institute of Technology (MIT), Department of Economics.
  8. Saint-Paul, Gilles, 1992. "Technological choice, financial markets and economic development," European Economic Review, Elsevier, vol. 36(4), pages 763-781, May.
  9. Acemoglu, Daron & Zilibotti, Fabrizio, 1996. "Was Prometheus Unbound by Chance? Risk, Diversification and Growth," CEPR Discussion Papers 1426, C.E.P.R. Discussion Papers.
  10. Jan Fagerberg, 1987. "A technology gap approach to why growth rates differ," Working Papers Archives 1987002, Centre for Technology, Innovation and Culture, University of Oslo.
  11. Robert J. Barro & Xavier Sala-i-Martin, 1995. "Technological diffusion, convergence and growth," Economics Working Papers 116, Department of Economics and Business, Universitat Pompeu Fabra.
  12. Ventura, Jaume, 1997. "Growth and Interdependence," The Quarterly Journal of Economics, MIT Press, vol. 112(1), pages 57-84, February.
  13. Patrick Royston, 1992. "Lowess Smoothing," Stata Technical Bulletin, StataCorp LP, vol. 1(3).
  14. Kelly, M., 1996. "The Dynamics of Smithian growth," Papers 96/9, College Dublin, Department of Political Economy-.
  15. J.Peter Neary, 2001. "Of Hype and Hyperbolas: Introducing the New Economic Geography," Journal of Economic Literature, American Economic Association, vol. 39(2), pages 536-561, June.
  16. repec:rus:hseeco:122203 is not listed on IDEAS
  17. Kevin M. Murphy & Andrei Shleifer & Robert W. Vishny, 1988. "Industrialization and the Big Push," NBER Working Papers 2708, National Bureau of Economic Research, Inc.
  18. Robert E. Lucas, 2000. "Some Macroeconomics for the 21st Century," Journal of Economic Perspectives, American Economic Association, vol. 14(1), pages 159-168, Winter.
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