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Directed technological change: It's all about knowledge

Author

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  • Hart, Rob

    () (Department of Economics, Swedish University of Agricultural Sciences)

Abstract

Directed technological change concerns how stocks of factor-augmenting knowledge evolve relative to each other. In a simple framework we show that relative investment rates depend directly on the relative factor shares, and that the resulting evolution of the economy depends on the substitutability between the factors and the nature of the links between the knowledge stocks. We thus generalize and reinterpret existing results. Furthermore, we propose a novel model of spillovers between stocks of factor-augmenting knowledge which results in multiple equilibria when the factors are substitutes. This may have profound implications for the modelling of technological transitions\m such as from `dirty' to `clean' technology, or from low-skill/low-tech to high-skill/high-tech production systems\m and hence for modelling long-run economic change in general.

Suggested Citation

  • Hart, Rob, 2012. "Directed technological change: It's all about knowledge," Working Paper Series 2012:02, Swedish University of Agricultural Sciences, Department Economics.
  • Handle: RePEc:hhs:slueko:2012_002
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    File URL: http://www.ekoninternt.se/rob/wps/robhartWP1203.pdf
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    References listed on IDEAS

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    1. Daron Acemoglu & Philippe Aghion & Leonardo Bursztyn & David Hemous, 2012. "The Environment and Directed Technical Change," American Economic Review, American Economic Association, pages 131-166.
    2. Geir Asheim & Wolfgang Buchholz & Cees Withagen, 2003. "The Hartwick Rule: Myths and Facts," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, pages 129-150.
    3. Daron Acemoglu, 1998. "Why Do New Technologies Complement Skills? Directed Technical Change and Wage Inequality," The Quarterly Journal of Economics, Oxford University Press, vol. 113(4), pages 1055-1089.
    4. Geir Asheim & Wolfgang Buchholz & Cees Withagen, 2003. "The Hartwick Rule: Myths and Facts," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, pages 129-150.
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    More about this item

    Keywords

    Growth; directed technological change; knowledge spillovers.;

    JEL classification:

    • O11 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Macroeconomic Analyses of Economic Development
    • O33 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes

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