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Leadership Cycles

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Author Info

  • Vincenzo Denicolò

    (University of Bologna)

  • Piercarlo Zanchettin

    (University of Leicester)

Abstract

We study a quality-ladder model of endogenous growth that produces stochastic leadership cycles. Over a cycle, industry leaders can innovate several successive times in the same industry, gradually increasing the magnitude of their technological lead before being replaced by a new entrant. Initially, new leaders are eager to enlarge their lead and do much of the research, but if they innovate repeatedly, their propensity to invest in R&D decreases. Eventually they stop doing research altogether, and as they are overtaken a new cycle starts. The model generates a skewed firm size distribution and a deviation from Gibrat’s law that accord with the empirical evidence. We also consider various policy measures, showing that in some cases policy should favour R&D by incumbents, not outsiders, and that stronger patent protection may reduce innovation and growth.

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Bibliographic Info

Paper provided by Fondazione Eni Enrico Mattei in its series Working Papers with number 2010.35.

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Date of creation: Apr 2010
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Handle: RePEc:fem:femwpa:2010.35

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Keywords: Technological Lead; Innovation; R&D;

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References

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  1. Rasmus Lentz & Dale T. Mortensen, 2005. "An Empirical Model of Growth Through Product Innovation," NBER Working Papers 11546, National Bureau of Economic Research, Inc.
  2. Robert J. Barro & Xavier Sala-i-Martin, 1994. "Quality improvements in models of growth," Economics Working Papers 84, Department of Economics and Business, Universitat Pompeu Fabra.
  3. Hall, Bronwyn H, 1987. "The Relationship between Firm Size and Firm Growth in the U.S. Manufacturing Sector," Journal of Industrial Economics, Wiley Blackwell, vol. 35(4), pages 583-606, June.
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  6. Philippe Aghion & Nicholas Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2002. "Competition and innovation: an inverted U relationship," IFS Working Papers W02/04, Institute for Fiscal Studies.
  7. Klette, Tor Jakob & Kortum, Samuel, 2002. "Innovating Firms and Aggregate Innovation," Memorandum 02/2002, Oslo University, Department of Economics.
  8. repec:fth:harver:1473 is not listed on IDEAS
  9. Lu�s M B Cabral & Jos� Mata, 2003. "On the Evolution of the Firm Size Distribution: Facts and Theory," American Economic Review, American Economic Association, vol. 93(4), pages 1075-1090, September.
  10. Griliches, Zvi, 1990. "Patent Statistics as Economic Indicators: A Survey," Journal of Economic Literature, American Economic Association, vol. 28(4), pages 1661-1707, December.
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  12. Aghion, P. & Howitt, P., 1989. "A Model Of Growth Through Creative Destruction," UWO Department of Economics Working Papers 8904, University of Western Ontario, Department of Economics.
  13. Mark L.J. Wright & Esteban Rossi-Hansberg, 2004. "Firm Size Dynamics in the Aggregate Economy," 2004 Meeting Papers 878, Society for Economic Dynamics.
  14. Rasmus Lentz & Dale T. Mortensen, 2005. "Productivity Growth And Worker Reallocation," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 46(3), pages 731-749, 08.
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  16. Gian Luca Clementi & Hugo Hopenhagn, 2004. "A Theory of Financing Constraints and Firm Dynamics," Working Papers 04-25, New York University, Leonard N. Stern School of Business, Department of Economics.
  17. Angus Chu, 2009. "Effects of blocking patents on R&D: a quantitative DGE analysis," Journal of Economic Growth, Springer, vol. 14(1), pages 55-78, March.
  18. Gene M. Grossman & Elhanan Helpman, 1991. "Quality Ladders in the Theory of Growth," NBER Working Papers 3099, National Bureau of Economic Research, Inc.
  19. Paul S. Segerstrom, 2007. "Intel Economics," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 48(1), pages 247-280, 02.
  20. Vincenzo Denicol� & Piercarlo Zanchettin, 2010. "Competition, Market Selection and Growth," Economic Journal, Royal Economic Society, vol. 120(545), pages 761-785, 06.
  21. O'Donoghue, Edward & Zweimüller, Josef, 1998. "Patents in a Model of Endogenous Growth," CEPR Discussion Papers 1951, C.E.P.R. Discussion Papers.
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Cited by:
  1. Hélène Latzer, 2011. "A Schumpeterian model of growth and inequality," Working Papers of BETA 2011-20, Bureau d'Economie Théorique et Appliquée, UDS, Strasbourg.

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