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Solow’s Harrod: Transforming Cyclical Dynamics into a Model of Long-run Growth

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  • Verena Halsmayer
  • Kevin D. Hoover

Abstract

Modern growth theory derives mostly from Robert Solow’s “A Contribution to the Theory of Economic Growth” (1956). Solow’s own interpretation locates the origins of his “Contribution” in his view that the growth model of Roy Harrod implied a tendency toward progressive collapse of the economy. He formulates his view in terms of Harrod’s invoking a fixed-coefficients production function. We challenge Solow’s reading of Harrod’s “Essay in Dynamic Theory,” arguing that Harrod’s object in providing a “dynamic” theory had little to do with the problem of long-run growth as Solow understood it, but instead addressed medium-run fluctuations, the “inherent instability” of economies. It was an attempt to isolate conditions under which the economy might tend to run below potential. In making this argument, Harrod does not appeal to a fixed-coefficients production function – or to any production function at all, as that term is understood by Solow. Solow interpreted Harrod’s “Essay” in the light of a particular culture of understanding grounded in the practice of formal modeling that emerged in economics in the post-World War II period. The fate of Harrod’s analysis is a case study in the difficulties in communicating across distinct interpretive communities and of the potential for losing content and insights in the process. From Harrod’s English Keynesian point of view, Solow’s interpretation arose out of a culture of misunderstanding, and his objects – particularly, of trying to account for a tendency of the economy toward chronic recessions – were lost to the mainstream literature.

Suggested Citation

  • Verena Halsmayer & Kevin D. Hoover, 2013. "Solow’s Harrod: Transforming Cyclical Dynamics into a Model of Long-run Growth," Center for the History of Political Economy Working Paper Series 2013-02, Center for the History of Political Economy.
  • Handle: RePEc:hec:heccee:2013-2
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    File URL: http://hope.econ.duke.edu/node/724
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    Cited by:

    1. Michael Assous, 2013. "Solow's Struggle with Medium-Run Macroeconomics: 1956-1995," Center for the History of Political Economy Working Paper Series 2013-17, Center for the History of Political Economy.

    More about this item

    Keywords

    economic growth; Roy Harrod; Robert Solow; dynamics; dynamic instability; knifeedge; warranted rate of growth; natural rate of growth;

    JEL classification:

    • B22 - Schools of Economic Thought and Methodology - - History of Economic Thought since 1925 - - - Macroeconomics
    • O4 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity
    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian
    • E13 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Neoclassical
    • N1 - Economic History - - Macroeconomics and Monetary Economics; Industrial Structure; Growth; Fluctuations
    • B31 - Schools of Economic Thought and Methodology - - History of Economic Thought: Individuals - - - Individuals

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