Gortz, Christoph and John, Tsoukalas (2011): Learning, capital-embodied technology and aggregate fluctuations.
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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.
|Item Type:||MPRA Paper|
|Original Title:||Learning, capital-embodied technology and aggregate fluctuations|
|Keywords:||News shocks, expectations, growth asymmetry, Bayesian learning, business cycles|
|Subjects:||E - Macroeconomics and Monetary Economics > E2 - Macroeconomics: Consumption, Saving, Production, Employment, and Investment
D - Microeconomics > D8 - Information, Knowledge, and Uncertainty > D83 - Search; Learning; Information and Knowledge; Communication; Belief
E - Macroeconomics and Monetary Economics > E3 - Prices, Business Fluctuations, and Cycles
|Depositing User:||Christoph Görtz|
|Date Deposited:||16. Dec 2011 23:34|
|Last Modified:||12. Feb 2013 16:24|
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