Measuring the Returns to R&D: The Depreciation Problem
In: Contributions in Memory of Zvi Griliches
Measuring the private returns to R&D requires knowledge of its private depreciation or obsolescence rate, which is inherently variable and responds to competitive pressure. Nevertheless, most of the previous literature has used a constant depreciation rate to construct R&D capital stocks and measure the returns to R&D, a rate usually equal to 15 per cent. In this paper I review the implications of this assumption for the measurement of returns using two different methodologies: one based on the production function and another that uses firm market value to infer returns. Under the assumption that firms choose their R&D investment optimally, that is, marginal expected benefit equals marginal cost, I show that both estimates of returns can be inverted to derive an implied depreciation rate for R&D capital. I then test these ideas on a large unbalanced panel of U.S. manufacturing firms for the years 1974 to 2003. The two methods do not agree, in that the production function approach suggests depreciation rates near zero (or even appreciation) whereas the market value approach implies depreciation rates ranging from 20 to 40 per cent, depending on the period. The concluding section discusses the possible reasons for this finding.
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- Cockburn, Iain & Griliches, Zvi, 1988.
"Industry Effects and Appropriability Measures in the Stock Market's Valuation of R&D and Patents,"
American Economic Review,
American Economic Association, vol. 78(2), pages 419-423, May.
- Iain Cockburn & Zvi Griliches, 1987. "Industry Effects and Appropriability Measures in the Stock Markets Valuation of R&D and Patents," NBER Working Papers 2465, National Bureau of Economic Research, Inc.
- Zvi Griliches & Jacques Mairesse, 1995.
"Production Functions: The Search for Identification,"
NBER Working Papers
5067, National Bureau of Economic Research, Inc.
- Z, Griliches & Jacques Mairesse, 1997. "Production Functions : The Search for Identification," Working Papers 97-30, Center for Research in Economics and Statistics.
- Zvi Griliches & Jacques Mairesse, 1995. "Production Functions: The Search for Identification," Harvard Institute of Economic Research Working Papers 1719, Harvard - Institute of Economic Research.
- Ivar Ekeland & James J. Heckman & Lars Nesheim, 2004.
"Identification and Estimation of Hedonic Models,"
Journal of Political Economy,
University of Chicago Press, vol. 112(S1), pages 60-109, February.
- Ivar Ekeland & James Heckman & Lars Nesheim, 2002. "Identification and estimation of hedonic models," CeMMAP working papers CWP07/02, Centre for Microdata Methods and Practice, Institute for Fiscal Studies.
- Ekeland, Ivar & Heckman, James J. & Nesheim, Lars, 2003. "Identification and Estimation of Hedonic Models," IZA Discussion Papers 853, Institute for the Study of Labor (IZA).
- Ivar Ekeland & James J. Heckman & Lars P. Nesheim, 2003. "Identification and Estimation of Hedonic Models," NBER Working Papers 9910, National Bureau of Economic Research, Inc.
- Ivar Ekeland & James J. Heckman & Lars Nesheim, 2003. "Identification and Estimation of Hedonic Models," CESifo Working Paper Series 1031, CESifo Group Munich.
- Zvi Griliches, 1984. "Market Value, R&D, and Patents," NBER Chapters,in: R&D, Patents, and Productivity, pages 249-252 National Bureau of Economic Research, Inc.
- Zvi Griliches, 1998.
"Returns to Research and Development Expenditures in the Private Sector,"
NBER Chapters,in: R&D and Productivity: The Econometric Evidence, pages 49-81
National Bureau of Economic Research, Inc.
- Zvi Griliches, 1980. "Returns to Research and Development Expenditures in the Private Sector," NBER Chapters,in: New Developments in Productivity Measurement, pages 419-462 National Bureau of Economic Research, Inc.
- Chan, Su Han & Martin, John D. & Kensinger, John W., 1990. "Corporate research and development expenditures and share value," Journal of Financial Economics, Elsevier, vol. 26(2), pages 255-276, August.
- Zvi Griliches & Bronwyn H. Hall & Ariel Pakes, 1988. "R&D, Patents, and Market Value Revisited: Is There Evidence of A SecondTechnological Opportunity Related Factor?," NBER Working Papers 2624, National Bureau of Economic Research, Inc.
- Zvi Griliches, 1958. "Research Costs and Social Returns: Hybrid Corn and Related Innovations," Journal of Political Economy, University of Chicago Press, vol. 66, pages 419-419.
- Louis K. C. Chan, 2001. "The Stock Market Valuation of Research and Development Expenditures," Journal of Finance, American Finance Association, vol. 56(6), pages 2431-2456, December.
- Brown, James N & Rosen, Harvey S, 1982.
"On the Estimation of Structural Hedonic Price Models,"
Econometric Society, vol. 50(3), pages 765-768, May.
- James N. Brown & Harvey S. Rosen, 1982. "On the Estimation of Structural Hedonic Price Models," NBER Technical Working Papers 0018, National Bureau of Economic Research, Inc.
- repec:crs:wpaper:9730 is not listed on IDEAS
- Bosworth, Derek & Rogers, Mark, 2001. "Market Value, R&D and Intellectual Property: An Empirical Analysis of Large Australian Firms," The Economic Record, The Economic Society of Australia, vol. 77(239), pages 323-337, December. Full references (including those not matched with items on IDEAS)
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