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Learning, capital-embodied technology and aggregate fluctuations

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  • Gortz, Christoph
  • John, Tsoukalas

Abstract

Business cycles in the U.S. and G-7 economies are asymmetric: recoveries and expansions tend to be long and gradual and busts tend to be short and sharp. Moreover, this type of asymmetry appears more pronounced in the last two cyclical episodes in the G-7. A large body of work views the last two cyclical U.S. episodes, namely, the``new economy" boom in the late 1990s, and the 2000s housing boom-bust as episodes where over-optimistic beliefs have played a significant role. These episodes have revived interest in expectations driven business cycles models. However, previous work in this area has not addressed the important asymmetry feature of business cycles. This paper takes a step towards addressing this limitation of expectations driven business cycle models. We propose a generalization of the Greenwood et al. (1988) model with vintage capital and learning about capital embodied productivity and show it can deliver fluctuations that are asymmetric as in the U.S. data. Learning, calibrated to match the procyclical forecast precision from the Survey of Professional Forecasters, is crucial for the model's ability to generate asymmetries. Forecast errors generated by the model are shown to: (a) amplify fluctuations, and (b) trigger recessions that mimic in magnitude, duration and depth the typical post WW II U.S. recession.

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Bibliographic Info

Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 35438.

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Date of creation: Jun 2011
Date of revision: Nov 2011
Handle: RePEc:pra:mprapa:35438

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Keywords: News shocks; expectations; growth asymmetry; Bayesian learning; business cycles;

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References

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Citations

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Cited by:
  1. Christoph Gortz & John D Tsoukalas, 2012. "News and Financial Intermediation in Aggregate and Sectoral Fluctuations," Discussion Papers 12-10, Department of Economics, University of Birmingham.
  2. Görtz, Christoph & Tsoukalas, John, 2011. "News and Financial Intermediation in Aggregate Fluctuations," MPRA Paper 34113, University Library of Munich, Germany, revised Oct 2011.
  3. repec:pra:mprapa:38985 is not listed on IDEAS
  4. Christoph Görtz & John D. Tsoukalas, 2013. "Sector Specific News Shocks in Aggregate and Sectoral Fluctuations," CESifo Working Paper Series 4269, CESifo Group Munich.

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