Learning, Capital Embodied Technology and Aggregate Fluctuations

Christoph Görtz and John Tsoukalas

Review of Economic Dynamics, 2013, vol. 16, issue 4, 708-723

Abstract: Recent cyclical episodes 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. A large body of work views the two recent 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 trigger recessions that mimic in magnitude, duration and depth the typical post WW II U.S. recession. (Copyright: Elsevier)

Keywords: News shocks; Expectations; Growth asymmetry; Bayesian learning; Business cycles (search for similar items in EconPapers)
JEL-codes: D83 E2 E3 (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (7)

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Working Paper: Learning, capital-embodied technology and aggregate fluctuations (2011)
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DOI: 10.1016/j.red.2012.04.003

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