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Stochastic Volatility and DSGE Models

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  • Martin M. Andreasen

    () (Bank of England and CREATES)

Abstract

This paper argues that a specification of stochastic volatility commonly used to analyze the Great Moderation in DSGE models may not be appropriate, because the level of a process with this specification does not have conditional or unconditional moments. This is unfortunate because agents may as a result expect productivity and hence consumption to be inifinite in all future periods. This observation is followed by three ways to overcome the problem.

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File URL: ftp://ftp.econ.au.dk/creates/rp/09/rp09_29.pdf
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Bibliographic Info

Paper provided by School of Economics and Management, University of Aarhus in its series CREATES Research Papers with number 2009-29.

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Length: 8
Date of creation: 07 Jul 2009
Date of revision:
Handle: RePEc:aah:create:2009-29

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Web page: http://www.econ.au.dk/afn/

Related research

Keywords: Great Moderation; Productivity shocks; and Time-varying coe¢ cients;

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  1. Siem Jan Koopman & Eugenie Hol Uspensky, 2002. "The stochastic volatility in mean model: empirical evidence from international stock markets," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 17(6), pages 667-689.
  2. Alejandro Justiniano & Giorgio E. Primiceri, 2006. "The Time Varying Volatility of Macroeconomic Fluctuations," NBER Working Papers 12022, National Bureau of Economic Research, Inc.
  3. Jesus Fernandez-Villaverde & Juan F. Rubio-Ramirez, 2007. "Estimating Macroeconomic Models: A Likelihood Approach," Review of Economic Studies, Wiley Blackwell, vol. 74(4), pages 1059-1087, October.
  4. Engle, Robert F & Lilien, David M & Robins, Russell P, 1987. "Estimating Time Varying Risk Premia in the Term Structure: The Arch-M Model," Econometrica, Econometric Society, vol. 55(2), pages 391-407, March.
  5. Mikhail Chernov & A. Ronald Gallant & Eric Ghysels & George Tauchen, 2002. "Alternative Models for Stock Price Dynamics," CIRANO Working Papers 2002s-58, CIRANO.
  6. Christopher A. Sims & Tao Zha, 2004. "Were there regime switches in U.S. monetary policy?," Working Paper 2004-14, Federal Reserve Bank of Atlanta.
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