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Zeros and Lumps in Investment: Empirical Evidence on Irreversibilities and Nonconvexities


  • Øivind Anti Nilsen

    (University of Bergen)

  • Fabio Schiantarelli

    (Boston College)


The objective of this paper is to investigate if and how capital adjustment departs from the smooth pattern implied by standard model based on convex adjustment costs. Using Norwegian micro data, we start by documenting the intermittent and lumpy nature of investment rates. We then present two pieces of econometric evidence on these issues. First, we estimate a discrete hazard model to determine the probability of having an episode of high investment, conditional on the length of the interval from the last high-investment episode. Second, we estimate a switching regression model that allows for the response of the investment rate to fundamentals to differ across regimes. In both cases we investigate the aggregate implications of our results. © 2003 President and Fellows of Harvard College and the Massachusetts Institute of Technology.

Suggested Citation

  • Øivind Anti Nilsen & Fabio Schiantarelli, 2003. "Zeros and Lumps in Investment: Empirical Evidence on Irreversibilities and Nonconvexities," The Review of Economics and Statistics, MIT Press, vol. 85(4), pages 1021-1037, November.
  • Handle: RePEc:tpr:restat:v:85:y:2003:i:4:p:1021-1037

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    References listed on IDEAS

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    More about this item

    JEL classification:

    • D21 - Microeconomics - - Production and Organizations - - - Firm Behavior: Theory
    • E22 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Investment; Capital; Intangible Capital; Capacity


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