Regime Switches, Agents’ Beliefs, and Post-World War II U.S. Macroeconomic Dynamics

Francesco Bianchi

No 198, 2009 Meeting Papers from Society for Economic Dynamics

Abstract: This paper is focused on the evolution of inflation and output dynamics over the last 50 years, the changes in the behavior of the Federal Reserve, and the role of agents' beliefs. I consider a new Keynesian dynamic stochastic general equilibrium model with Markov-switching structural parameters and heteroskedastic shocks. Agents are aware of the possibility of regime changes and they form expectations accordingly. The results support the view that there were regime switches in the conduct of monetary policy. However, the idea that US monetary policy can be described in terms of pre- and post- Volcker proves to be misleading. The behavior of the Federal Reserve has instead repeatedly fluctuated between a Hawk- and a Dove- regime. Counterfactual simulations show that if agents had anticipated the appointment of an extremely conservative Chairman, inflation would not have reached the peaks of the late `70s and the inflation-output trade-off would have been less severe. This result suggests that in the `70s the Federal Reserve was facing a serious problem of credibility and that there are potentially important gains from committing to a regime of inflation targeting. Finally, I show that in the last year the Fed has systematically deviated from standard monetary practice. As a technical contribution, the paper provides a Bayesian algorithm to estimate a Markov-switching DSGE model.

Date: 2009
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Related works:
Journal Article: Regime Switches, Agents' Beliefs, and Post-World War II U.S. Macroeconomic Dynamics (2013)
Working Paper: Regime Switches, Agents’ Beliefs, and Post-World War II U.S. Macroeconomic Dynamics (2012)
Working Paper: Regime Switches, Agents' Beliefs, and Post-World War II U.S. Macroeconomic Dynamics (2010)
Working Paper: Regime switches, Agents’ Beliefs, and Post-World War II U.S. Macroeconomic Dynamics (2010)
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