IDEAS home Printed from
MyIDEAS: Log in (now much improved!) to save this paper

A Schumpeterian Growth Model with Heterogenous Firms

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

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; a (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.

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

File URL:
Download Restriction: no

Paper provided by Dipartimento Scienze Economiche, Universita' di Bologna in its series Working Papers with number 645.

in new window

Date of creation: Oct 2008
Date of revision:
Handle: RePEc:bol:bodewp:645
Contact details of provider: Postal:
Piazza Scaravilli, 2, and Strada Maggiore, 45, 40125 Bologna

Phone: +39 051 209 8019 and 2600
Fax: +39 051 209 8040 and 2664
Web page:

More information through EDIRC

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

as in new window
  1. Mehra, Rajnish & Prescott, Edward C., 1985. "The equity premium: A puzzle," Journal of Monetary Economics, Elsevier, vol. 15(2), pages 145-161, March.
  2. Aghion, P. & Howitt, P., 1989. "A Model Of Growth Through Creative Destruction," Working papers 527, Massachusetts Institute of Technology (MIT), Department of Economics.
  3. Charles I. Jones & John C. Williams, 1999. "Too Much of a Good Thing? The Economics of Investment in R&D," NBER Working Papers 7283, National Bureau of Economic Research, Inc.
  4. Bronwyn H. Hall & Adam B. Jaffe & Manuel Trajtenberg, 2000. "Market Value and Patent Citations: A First Look," NBER Working Papers 7741, National Bureau of Economic Research, Inc.
  5. Klemperer, Paul, 1990. "How Broad Should the Scope of Patent Protection Be?," CEPR Discussion Papers 392, C.E.P.R. Discussion Papers.
  6. Susanto Basu, 1996. "Procyclical Productivity: Increasing Returns or Cyclical Utilization?," The Quarterly Journal of Economics, Oxford University Press, vol. 111(3), pages 719-751.
  7. Scherer, Frederic M. & Harhoff, Dietmar & Vopel, Katrin, 1997. "Exploring the Tail of Patented Invention Value Distributions," ZEW Discussion Papers 97-30, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.
  8. Samuel S. Kortum, 1997. "Research, Patenting, and Technological Change," Econometrica, Econometric Society, vol. 65(6), pages 1389-1420, November.
  9. Charles I. Jones, 2004. "Growth and Ideas," NBER Working Papers 10767, National Bureau of Economic Research, Inc.
  10. Ted O'Donoghue & Josef Zweimueller, 2004. "Patents in a Model of Endogenous Growth," Journal of Economic Growth, Springer, vol. 9(1), pages 81-123, 03.
  11. Marc J. Melitz, 2003. "The Impact of Trade on Intra-Industry Reallocations and Aggregate Industry Productivity," Econometrica, Econometric Society, vol. 71(6), pages 1695-1725, November.
  12. Dinopoulos, Elias & Thompson, Peter, 1998. "Schumpeterian Growth without Scale Effects," Journal of Economic Growth, Springer, vol. 3(4), pages 313-35, December.
  13. Thompson, Peter & Waldo, Doug, 1994. "Growth and trustified capitalism," Journal of Monetary Economics, Elsevier, vol. 34(3), pages 445-462, December.
  14. Li, Chol-Won, 2001. "On the Policy Implications of Endogenous Technological Progress," Economic Journal, Royal Economic Society, vol. 111(471), pages C164-79, May.
  15. Benjamin Bental & Dan Peled, 2002. "Quantitative growth effects of subsidies in a search theoretic R&D model," Journal of Evolutionary Economics, Springer, vol. 12(4), pages 397-423.
  16. Thompson, Peter, 1999. "Rationality, rules of thumb, and R&D," Structural Change and Economic Dynamics, Elsevier, vol. 10(3-4), pages 321-340, December.
  17. Chol-Won Li, 2003. "Endogenous Growth Without Scale Effects: Comment," American Economic Review, American Economic Association, vol. 93(3), pages 1009-1017, June.
  18. 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.
  19. Cohen, Wesley M. & Levin, Richard C., 1989. "Empirical studies of innovation and market structure," Handbook of Industrial Organization, in: R. Schmalensee & R. Willig (ed.), Handbook of Industrial Organization, edition 1, volume 2, chapter 18, pages 1059-1107 Elsevier.
  20. Norrbin, Stefan C, 1993. "The Relation between Price and Marginal Cost in U.S. Industry: A Contradiction," Journal of Political Economy, University of Chicago Press, vol. 101(6), pages 1149-64, December.
  21. repec:ebl:ecbull:v:15:y:2003:i:4:p:1-8 is not listed on IDEAS
  22. Joonkyung Ha & Peter Howitt, 2007. "Accounting for Trends in Productivity and R&D: A Schumpeterian Critique of Semi-Endogenous Growth Theory," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 39(4), pages 733-774, 06.
  23. Segerstrom, Paul S, 1998. "Endogenous Growth without Scale Effects," American Economic Review, American Economic Association, vol. 88(5), pages 1290-1310, December.
Full references (including those not matched with items on IDEAS)

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

When requesting a correction, please mention this item's handle: RePEc:bol:bodewp:645. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Dipartimento Scienze Economiche, Universita' di Bologna)

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.

This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.