This paper studies a New-Keynesian model in which monetary policy may switch between regimes. We derive sufficient conditions for indeterminacy that are easy to implement and we show that the necessary and sufficient condition for determinacy, provided by Davig and Leeper, is necessary but not sufficient. More importantly, we use a two-regime model to show that indeterminacy in a passive regime may spill over to an active regime, no matter how active the latter regime is. As a result, a passive monetary policy is more damaging than has been previously thought. Our results imply that the propagation of shocks in an active regime, such as that of the Federal Reserve in the post-1982 period, may be substantially affected by the possibility of a return to a passive regime of the kind that was followed in the 1960s and 1970s.
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
12965.
Length: Date of creation: Mar 2007 Date of revision: Handle: RePEc:nbr:nberwo:12965
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Find related papers by JEL classification: E3 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
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Troy Davig & Eric M. Leeper, 2006.
"Generalizing the Taylor Principle,"
Caepr Working Papers
2006-001, Center for Applied Economics and Policy Research, Economics Department, Indiana University Bloomington.
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David Andolfatto & Paul Gomme, 2003.
"Monetary Policy Regimes and Beliefs,"
International Economic Review,
Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 44(1), pages 1-30, February.
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