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An endogenous growth model with quality ladders and consumers’ heterogeneity

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Marasco, Antonio

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Abstract

This paper develops an endogenous growth model with quality ladders where consumers heterogeneity is assumed and is modelled through non homothetic preferences. We show that in such a model, unlike mainstream quality ladders models, the steady state equilibrium is characterised by a duopoly were the state of the art technology and the one immediately below it are both able to survive and thrive, under given conditions for the income distribution. In the words of Schumpeter, this model delivers only partial creative destruction. Furthermore, we show that under duopoly, an increase in the degree of income inequality, raises the intensity of research activities and the growth rate of the economy.

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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 5389.

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Date of creation: Sep 2002
Date of revision: Jan 2007
Handle: RePEc:pra:mprapa:5389

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Related research
Keywords: Industrial Organization; Income Distribution; Technological Change; Innovation; Growth;

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Find related papers by JEL classification:
O40 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - General
O30 - Economic Development, Technological Change, and Growth - - Technological Change - - - General
D40 - Microeconomics - - Market Structure and Pricing - - - General

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  1. Oded Galor & Omer Moav, 2004. "From Physical to Human Capital Accumulation: Inequality and the Process of Development," Review of Economic Studies, Blackwell Publishing, vol. 71(4), pages 1001-1026, October. [Downloadable!] (restricted)
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  2. Jaskold Gabszewicz, J. & Thisse, J. -F., 1979. "Price competition, quality and income disparities," Journal of Economic Theory, Elsevier, vol. 20(3), pages 340-359, June. [Downloadable!] (restricted)
  3. Romer, Paul M, 1990. "Endogenous Technological Change," Journal of Political Economy, University of Chicago Press, vol. 98(5), pages S71-102, October. [Downloadable!] (restricted)
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  4. Mani, Anandi, 2001. " Income Distribution and the Demand Constraint," Journal of Economic Growth, Springer, vol. 6(2), pages 107-33, June. [Downloadable!] (restricted)
  5. Josef Zweimüller & Johann K. Brunner, 2005. "Innovation And Growth With Rich And Poor Consumers," Metroeconomica, Blackwell Publishing, vol. 56(2), pages 233-262, 05. [Downloadable!] (restricted)
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  6. Chol-Won Li., . "Inequality and Growth: A Schumpeterian Perspective," Working Papers 9609, Department of Economics, University of Glasgow, revised Feb 1998. [Downloadable!]
  7. Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth through Creative Destruction," Econometrica, Econometric Society, vol. 60(2), pages 323-51, March. [Downloadable!] (restricted)
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  8. Shaked, Avner & Sutton, John, 1982. "Relaxing Price Competition through Product Differentiation," Review of Economic Studies, Blackwell Publishing, vol. 49(1), pages 3-13, January. [Downloadable!] (restricted)
  9. Philippe Aghion & Nick Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2005. "Competition and Innovation: An Inverted-U Relationship," The Quarterly Journal of Economics, MIT Press, vol. 120(2), pages 701-728, May.
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  10. Aghion, Philippe & Harris, Christopher & Vickers, John, 1997. "Competition and growth with step-by-step innovation: An example," European Economic Review, Elsevier, vol. 41(3-5), pages 771-782, April. [Downloadable!] (restricted)
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