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Nonlinearity and Structural Breaks in Monetary Policy Rules with Stock Prices

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  • Dong Jin Lee

    (University of Connecticut)

  • Jong Chil Son

    (The Bank of Korea)

Abstract

This paper empirically examines how the Fed responds to stock prices and inflation movements, using the forward-looking Taylor rule augmented with the stock price gap. The typical linear policy reaction function has a substantial change after 1991, but lacks the robustness in that the estimation result is sensitive to a minor change of the sample period. To alleviate the problem, we allow for temporary and permanent variations of the reaction coefficients by introducing nonlinearity and a structural break. The time variation of the inflation coefficient shows that the Fed is more aggressive in periods of inflationary pressure. However, unlike the linear model case, we find little evidence of a significant change in the Fed's active response to inflationary pressure after the structural break at 1991:I. We also find a positive response to the stock price change after 1991:I. But the time varying pattern of the response is counter-cyclical to stock price change, which does not support the view that the Fed actively reacts to a stock price bubble.

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File URL: http://www.econ.uconn.edu/working/2011-19.pdf
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Bibliographic Info

Paper provided by University of Connecticut, Department of Economics in its series Working papers with number 2011-19.

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Length: 31 pages
Date of creation: Oct 2011
Date of revision:
Handle: RePEc:uct:uconnp:2011-19

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Web page: http://www.econ.uconn.edu/
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Related research

Keywords: Monetary policy rule; nonlinear model; stock market; structural break; and time varying coefficient;

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  1. Botzen, W.J. Wouter & Marey, Philip S., 2010. "Did the ECB respond to the stock market before the crisis?," Journal of Policy Modeling, Elsevier, vol. 32(3), pages 303-322, May.
  2. Bill Dupor & Timothy Conley, 2004. "The Fed Response to Equity Prices and Inflation," American Economic Review, American Economic Association, vol. 94(2), pages 24-28, May.
  3. Bjørnland, Hilde C. & Leitemo, Kai, 2009. "Identifying the interdependence between US monetary policy and the stock market," Journal of Monetary Economics, Elsevier, vol. 56(2), pages 275-282, March.
  4. Mohamed Safouane Ben Aissa & Jamel Jouini, 2003. "Structural breaks in the US inflation process," Applied Economics Letters, Taylor & Francis Journals, vol. 10(10), pages 633-636.
  5. Hayford, M. D. & Malliaris, A. G., 2005. "How did the Fed react to the 1990s stock market bubble? Evidence from an extended Taylor rule," European Journal of Operational Research, Elsevier, vol. 163(1), pages 20-29, May.
  6. J. Jouini & M. Boutahar, 2003. "Structural breaks in the U.S. inflation process: a further investigation," Applied Economics Letters, Taylor & Francis Journals, vol. 10(15), pages 985-988.
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