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Comparative Statics And Dynamics Of The Romer R&D Growth Model With Quality Upgrading

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  • Arnold, Lutz G.
  • Kornprobst, Wolfgang

Abstract

This paper replaces increasing product variety with quality upgrading in the Romer model [Romer, Paul M., Journal of Political Economy 98 (1990), S71–S102]. We show that the range of parameters for which a steady state exists can be divided into two subspaces with well-behaved comparative statics and saddle-point dynamics in one subspace, but with “perverse” comparative-statics properties and either equilibrium indeterminacy or instability in the other subspace. These results for the closed economy can also be used to characterize the dynamics of the M-country open-economy version of the model.

Suggested Citation

  • Arnold, Lutz G. & Kornprobst, Wolfgang, 2008. "Comparative Statics And Dynamics Of The Romer R&D Growth Model With Quality Upgrading," Macroeconomic Dynamics, Cambridge University Press, vol. 12(5), pages 702-716, November.
    • Handle: RePEc:cup:macdyn:v:12:y:2008:i:05:p:702-716_07
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    Cited by:

    1. Pedro Mazeda Gil & André Almeida, & Sofia B.S.D. Castro,, 2015. "Flexible Transitional Dynamics in a Non-Scale Fully Endogenous Growth Model," CEF.UP Working Papers 1503, Universidade do Porto, Faculdade de Economia do Porto.
    2. Park, Hyun, 2020. "Indeterminate equilibrium growth with product and R&D spillovers," Economic Modelling, Elsevier, vol. 86(C), pages 286-298.
    3. Gil, Pedro Mazeda & Iglésias, Gustavo & Guimarães, Luís, 2023. "Endogenous growth and monetary policy: How do interest-rate feedback rules shape nominal and real transitional dynamics?," Journal of International Money and Finance, Elsevier, vol. 138(C).
    4. Lai, Chung-hui, 2013. "(In)determinacy, bargaining, and R&D policies in an economy with endogenous technological change," Economics Discussion Papers 2013-14, Kiel Institute for the World Economy (IfW Kiel).

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