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Firm Size and R&D Intensity: A Re-Examination

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  • Wesley M. Cohen
  • Richard C. Levin
  • David C. Mowery

Abstract

Using data from the Federal Trade Commission's Line of Business Program and survey measures of technological opportunity and appropriability conditions, this paper finds that overall firm size has a very small, statistically in- significant effect on business unit R & D intensity when either fixed industry effects or measured industry characteristics are taken into account. Business unit size has no effect on the R & D intensity of business units that perform R & D, but it affects the probability of conducting R & D. Business unit and firm size jointly explain less than one per cent of the variance in R & D intensity; industry effects explain nearly half the variance.

Suggested Citation

  • Wesley M. Cohen & Richard C. Levin & David C. Mowery, 1987. "Firm Size and R&D Intensity: A Re-Examination," NBER Working Papers 2205, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:2205 Note: PR
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    References listed on IDEAS

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    1. Jacques Cremer & Marvin A. Sirbu JR, 1978. "Une analyse économétrique de l'effort de recherche et développement de l'industrie française," Revue Économique, Programme National Persée, vol. 29(5), pages 940-957.
    2. F. M. Fisher & P. Temin, 1971. "Returns-to-Scale in Research and Development: What Does the Schupeterian Hypothesis Imply?," Working papers 74, Massachusetts Institute of Technology (MIT), Department of Economics.
    3. McDonald, John F & Moffitt, Robert A, 1980. "The Uses of Tobit Analysis," The Review of Economics and Statistics, MIT Press, vol. 62(2), pages 318-321, May.
    4. John Bound & Clint Cummins & Zvi Griliches & Bronwyn H. Hall & Adam B. Jaffe, 1984. "Who Does R&D and Who Patents?," NBER Chapters,in: R&D, Patents, and Productivity, pages 21-54 National Bureau of Economic Research, Inc.
    5. Harvey, A C, 1976. "Estimating Regression Models with Multiplicative Heteroscedasticity," Econometrica, Econometric Society, vol. 44(3), pages 461-465, May.
    6. Fisher, Franklin M & Temin, Peter, 1973. "Returns to Scale in Research and Development: What Does the Schumpeterian Hypothesis Imply ?," Journal of Political Economy, University of Chicago Press, vol. 81(1), pages 56-70, Jan.-Feb..
    7. Kamien,Morton I. & Schwartz,Nancy L., 1982. "Market Structure and Innovation," Cambridge Books, Cambridge University Press, number 9780521293853, December.
    8. James Tobin, 1956. "Estimation of Relationships for Limited Dependent Variables," Cowles Foundation Discussion Papers 3R, Cowles Foundation for Research in Economics, Yale University.
    9. John Scott, 1984. "Firm versus Industry Variability in R&D Intensity," NBER Chapters,in: R&D, Patents, and Productivity, pages 233-248 National Bureau of Economic Research, Inc.
    10. Gary Chamberlain, 1980. "Analysis of Covariance with Qualitative Data," Review of Economic Studies, Oxford University Press, vol. 47(1), pages 225-238.
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