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Firms' Productivity Growth and R&D Spillovers: An Analysis of Alternative Technological Proximity Measures

  • Cincera, Michele

This paper aims at assessing the impact of R&D spillovers on firms’ economic performance as measured by productivity growth. The construction of R&D spillovers is based on Jaffe’s methodology (1986, 1988), which associates econometrics and data analysis. The main objective of the paper is to extend Jaffe’s methodology by examining alternative methods for measuring R&D spillovers and to test their impacts in terms of the robustness of results. In particular, the method used to classify firms into technological clusters as well as the metrics implemented to appreciate firms’ technological proximities which enter the construction of spillovers are further investigated. In addition to R&D spillovers, firms’ own R&D capital, labour and physical capital are estimated by means of a Cobb-Douglas production function. The data set consists of a representative sample of 625 worldwide R&D-intensive firms over the period 1987-1994.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 4894.

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Date of creation: Feb 2005
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Handle: RePEc:cpr:ceprdp:4894
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  39. Licht, Georg & Zoz, Konrad, 1996. "Patents and R&D: an econometric investigation using applications for German, European and US patents by German companies," ZEW Discussion Papers 96-19, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.
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