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Determinants of R&D and Its Productivity: Identifying Demand and Supply Channels (First revision)

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  • Nagaoka, Sadao

Abstract

Identifying whether an exogenous factor affects R&D from a demand side or from a supply side is an important issue. This paper, first, theoretically shows that a favorable change in either side can reduce the R&D productivity in equilibrium, so that the reduced form estimation cannot provide a clear identification. Secondly, it estimates both structural and reduced form patent production functions, based on instrumental variables approach, using a large database on Japanese firms. According to the estimation, while the initial firm size, market concentration or export orientation increases R&D, none of them significantly shifts the structural patent production function.

Suggested Citation

  • Nagaoka, Sadao, 2003. "Determinants of R&D and Its Productivity: Identifying Demand and Supply Channels (First revision)," IIR Working Paper 03-12, Institute of Innovation Research, Hitotsubashi University.
  • Handle: RePEc:hit:iirwps:03-12
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    File URL: http://hermes-ir.lib.hit-u.ac.jp/rs/bitstream/10086/15976/1/070iirWP03-12.pdf
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    More about this item

    Keywords

    R&D productivity; patent; firm size; competition;

    JEL classification:

    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital
    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms

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