R&D spillovers and productivity: Evidence from U.S. manufacturing microdata |
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| Authors: | Bart Los Bart Verspagen |
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| Institution: | (1) University of Groningen, Econometric Institute, Faculty of Economics, P.O. Box 800, 9700 AV Groningen, The Netherlands (e-mail: b.los@eco.rug.nl), NL;(2) ECIS, Eindhoven University of Technology, NL;(3) MERIT, University of Maastricht, P.O. Box 616, 6200 MD Maastricht, The Netherlands (e-mail: bart.verspagen@merit.unimaas.nl), NL |
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| Abstract: | This paper deals with the estimation of the impact of technology spillovers on productivity at the firm level. Panel data
for American manufacturing firms on sales, physical capital inputs, employment and R&D investments are linked to R&D data
by industry. The latter data are used to construct four different sets of `indirect' R&D stocks, representing technology obtained
through spillovers. The differences between two distinct kinds of spillovers are stressed. Cointegration analysis is introduced
into production function estimation. Spillovers are found to have significant positive effects on productivity, although their
magnitudes differ between high-tech, medium-tech and low-tech firms.
First version received: April 1997/final version received: April 1999 |
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| Keywords: | : R& D spillovers productivity production functions enterprise data |
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