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Knowledge spillovers and the timing of R&D policy

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We analyze how knowledge spillovers influence the optimal timing of R&D policy. Using numerical simulations we find that optimal subsidies to R&D may be rising over time even when the returns to knowledge is decreasing. The optimal time profile of the subsidies is determined by the elasticity of scale in the R&D production function, which again depends on both the returns to knowledge and the returns to labor.

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  • Geir H. Bjertnæs & Tom-Reiel Heggedal & Karl Jacobsen, 2010. "Knowledge spillovers and the timing of R&D policy," Discussion Papers 635, Statistics Norway, Research Department.
    • Handle: RePEc:ssb:dispap:635
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    1. Gerlagh , Reyer & Kverndokk , Snorre & Rosendahl , Knut Einar, 2007. "Optimal Timing of Environmental Policy: Interaction Between Environmental Taxes and Innovation Externalities," Memorandum 26/2006, Oslo University, Department of Economics.
    2. Jones, Charles I & Williams, John C, 2000. "Too Much of a Good Thing? The Economics of Investment in R&D," Journal of Economic Growth, Springer, vol. 5(1), pages 65-85, March.
    3. Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth through Creative Destruction," Econometrica, Econometric Society, vol. 60(2), pages 323-351, March.
    4. Heggedal, Tom-Reiel & Jacobsen, Karl, 2011. "Timing of innovation policies when carbon emissions are restricted: An applied general equilibrium analysis," Resource and Energy Economics, Elsevier, vol. 33(4), pages 913-937.
    5. Klette, Tor Jakob & Moen, Jarle & Griliches, Zvi, 2000. "Do subsidies to commercial R&D reduce market failures? Microeconometric evaluation studies1," Research Policy, Elsevier, vol. 29(4-5), pages 471-495, April.
    6. Romer, Paul M, 1990. "Endogenous Technological Change," Journal of Political Economy, University of Chicago Press, vol. 98(5), pages 71-102, October.
    7. Jones, Charles I, 1995. "R&D-Based Models of Economic Growth," Journal of Political Economy, University of Chicago Press, vol. 103(4), pages 759-784, August.
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    Cited by:

    1. Argentino Pessoa, 2005. "“Ideas” driven growth: the OECD evidence," Portuguese Economic Journal, Springer;Instituto Superior de Economia e Gestao, vol. 4(1), pages 46-67, April.

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    More about this item

    Keywords

    Innovation policy; R&D; Technological spillovers;
    All these keywords.

    JEL classification:

    • O32 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Management of Technological Innovation and R&D
    • O38 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Government Policy

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