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A Schumpeterian Growth Model with Heterogenous Firms

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  • Minniti, A.
  • Parello, C.
  • Segerstrom, P. S.

Abstract

A common assumption in the Schumpeterian growth literature is that the innovation size is constant and identical across industries. This is in contrast with the empirical evidence which shows that: (i) the innovation size is far from being identical across industries; and (ii) the size distribution of profit returns from innovation is highly skewed toward the low value side, with a long tail on the high value side. In the present paper, we develop a Schumpeterian growth model that is consistent with this evidence. In particular, we assume that when a firm innovates, the size of its quality improvement is the result of a random draw from a Pareto distribution. This enables us to extend the class of quality-ladder growth models to encompass firm heterogeneity. We study the policy implications of this new set-up numerically and find that it is optimal to heavily subsidize R&D for plausible parameter values. Although it is optimal to tax R&D for some parameter values, this case only occurs when the steady-state rate of economic growth is very low.

Suggested Citation

  • Minniti, A. & Parello, C. & Segerstrom, P. S., 2008. "A Schumpeterian Growth Model with Heterogenous Firms," MPRA Paper 13674, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:13674
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    Citations

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    Cited by:

    1. Cevikarslan, Salih, 2013. "Optimal patent length and patent breadth in an R&D driven market with evolving consumer preferences: An evolutionary multi-agent based modelling approach," MERIT Working Papers 2013-020, United Nations University - Maastricht Economic and Social Research Institute on Innovation and Technology (MERIT).
    2. Piercarlo Zanchettin & Vincenzo Denicolò, 2009. "Leadership Cycles," Discussion Papers in Economics 09/25, Division of Economics, School of Business, University of Leicester.
    3. Stadler Manfred, 2012. "Engines of Growth: Education and Innovation," Review of Economics, De Gruyter, vol. 63(2), pages 113-124, August.
    4. Paolo Giordani & Luca Zamparelli, 2011. "On robust asymmetric equilibria in asymmetric R&D-driven growth economies," Decisions in Economics and Finance, Springer;Associazione per la Matematica, vol. 34(1), pages 67-84, May.
    5. Simon Wiederhold, 2012. "The Role of Public Procurement in Innovation: Theory and Empirical Evidence," ifo Beiträge zur Wirtschaftsforschung, ifo Institute - Leibniz Institute for Economic Research at the University of Munich, number 43.
    6. Simon Wiederhold, 2009. "Government Spending Composition in a Simple Model of Schumpeterian Growth," Jena Economics Research Papers 2009-101, Friedrich-Schiller-University Jena.
    7. Venturini, Francesco, 2012. "Looking into the black box of Schumpeterian growth theories: An empirical assessment of R&D races," European Economic Review, Elsevier, vol. 56(8), pages 1530-1545.
    8. Cevikarslan, Salih, 2013. "Heterogeneity in innovation strategies, evolving consumer preferences and market structure: An evolutionary multi-agent based modelling approach," MERIT Working Papers 2013-019, United Nations University - Maastricht Economic and Social Research Institute on Innovation and Technology (MERIT).
    9. Viktor Slavtchev & Simon Wiederhold, 2011. "The Impact of Government Procurement Composition on Private R&D Activities," Jena Economics Research Papers 2011-036, Friedrich-Schiller-University Jena.

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    More about this item

    Keywords

    Schumpeterian Growth; R&D; optimal policy;
    All these keywords.

    JEL classification:

    • L16 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Industrial Organization and Macroeconomics; Macroeconomic Industrial Structure
    • O38 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Government Policy
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • E10 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - General

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