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Innovating Firms and Aggregate Innovation

  • Klette, Tor Jakob
  • Kortum, Samuel S

We develop a parsimonious model of innovating firms rich enough to confront firm-level evidence. It captures the dynamic behaviour of individual heterogeneous firms, describes the evolution of an industry with simultaneous entry and exit, and delivers a general equilibrium model of technological change. While unifying the theoretical analysis of firms, industries and the aggregate economy, the model yields insights into empirical work on innovating firms. It accounts for the persistence over time of firms' R&D investment, the concentration of R&D among incumbent firms, and the link between R&D and patenting. Furthermore, it explains why R&D as a fraction of revenues is strongly related to firm productivity yet largely unrelated to firm size or growth.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 3248.

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Date of creation: Mar 2002
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Handle: RePEc:cpr:ceprdp:3248
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  1. Xavier Sala-i-Martin, 1995. "Transfers, social safety nets and economic growth," Economics Working Papers 139, Department of Economics and Business, Universitat Pompeu Fabra.
  2. Robert J. Barro, 1995. "Inflation and Economic Growth," NBER Working Papers 5326, National Bureau of Economic Research, Inc.
  3. Rebecca Henderson, 1993. "Underinvestment and Incompetence as Responses to Radical Innovation: Evidence from the Photolithographic Alignment Equipment Industry," RAND Journal of Economics, The RAND Corporation, vol. 24(2), pages 248-270, Summer.
  4. David B. Audretsch, 1995. "Innovation and Industry Evolution," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262011468, March.
  5. Robert E. Lucas & Jr., 1967. "Adjustment Costs and the Theory of Supply," Journal of Political Economy, University of Chicago Press, vol. 75, pages 321.
  6. Li, Chol-Won, 2001. "On the Policy Implications of Endogenous Technological Progress," Economic Journal, Royal Economic Society, vol. 111(471), pages C164-79, May.
  7. R. Schmalensee & R. Willig (ed.), 1989. "Handbook of Industrial Organization," Handbook of Industrial Organization, Elsevier, edition 1, volume 1, number 1.
  8. R. Schmalensee & R. Willig (ed.), 1989. "Handbook of Industrial Organization," Handbook of Industrial Organization, Elsevier, edition 1, volume 2, number 2.
  9. anonymous, 1995. "Does the bouncing ball lead to economic growth?," Regional Update, Federal Reserve Bank of Atlanta, issue Jul, pages 1-2, 4-6.
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