Infrequent Changes of the Policy Target: Robust Optimal Monetary Policy under Ambiguity
AbstractIn many countries, the monetary policy instrument sometimes remains unchanged for a long period and shows infrequent responses to exogenous shocks. The purpose of this paper is to provide a new explanation on why the central bank's policy instrument remains unchanged. In the analysis, we explore how uncertainty on the private agents' expectations affects robust optimal monetary policy. We apply the Choquet expected decision theory to a new Keynesian model. A main result is that the policymaker may frequently keep the interest rate unchanged even when exogenous shocks change output gaps and inflation rates. This happens because a change of the interest rate increases additional uncertainty for the policymaker. To the extent that the policymaker has uncertainty aversion, it can therefore be optimal for the policymaker to maintain an unchanged policy stance for some significant periods and to make discontinuous changes of the target rate. Our analysis departs from previous studies in that we determine an optimal monetary policy rule that allows time-variant feedback parameters in a Taylor rule. We show that if the policymaker has small uncertainty aversion, the calibrated optimal stop-go policy rule can predict actual target rates of FRB and ECB reasonably well.
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Bibliographic InfoPaper provided by Center for Advanced Research in Finance, Faculty of Economics, The University of Tokyo in its series CARF F-Series with number CARF-F-295.
Length: 33 pages
Date of creation: Sep 2012
Date of revision:
This paper has been announced in the following NEP Reports:
- NEP-ALL-2012-10-13 (All new papers)
- NEP-CBA-2012-10-13 (Central Banking)
- NEP-MAC-2012-10-13 (Macroeconomics)
- NEP-MON-2012-10-13 (Monetary Economics)
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- James D. Hamilton & Oscar Jorda, 2002.
"A Model of the Federal Funds Rate Target,"
Journal of Political Economy,
University of Chicago Press, vol. 110(5), pages 1135-1167, October.
- James D. Hamilton & Oscar Jorda, 2000. "A Model for the Federal Funds Rate Target," NBER Working Papers 7847, National Bureau of Economic Research, Inc.
- James D. Hamilton & Oscar Jorda, . "A model for the federal funds rate target," Department of Economics 99-07, California Davis - Department of Economics.
- Oscar Jorda & James D. Hamilton, 2003. "A model for the federal funds rate target," Working Papers 997, University of California, Davis, Department of Economics.
- Mukerji, S. & Tallon, J.-M., 2000.
"Ambiguity Aversion and the Absence of Indexed Debt,"
Economics Series Working Papers
9928, University of Oxford, Department of Economics.
- Sujoy Mukerji & Jean-Marc Tallon, 2004. "Ambiguity aversion and the absence of indexed debt," Economic Theory, Springer, vol. 24(3), pages 665-685, October.
- Mokerji, S. & Tallon, J.M., 2000. "Ambiguity Aversion and the Absence of Indexed Debt," Papiers d'Economie MathÃÂ©matique et Applications 2000.53, UniversitÃ© PanthÃ©on-Sorbonne (Paris 1).
- Sujoy Mukerji & Jean-Marc Tallon, 2000. "Ambiguity Aversion and the Absence of Indexed Debt," Economics Series Working Papers 28, University of Oxford, Department of Economics.
- David Schmeidler, 1989.
"Subjective Probability and Expected Utility without Additivity,"
Levine's Working Paper Archive
7662, David K. Levine.
- Schmeidler, David, 1989. "Subjective Probability and Expected Utility without Additivity," Econometrica, Econometric Society, vol. 57(3), pages 571-87, May.
- Carl Walsh, 2001.
"Speed Limit Policies: The Output Gap and Optimal Monetary Policy,"
CESifo Working Paper Series
609, CESifo Group Munich.
- Carl Walsh, 2003. "Speed Limit Policies: The Output Gap and Optimal Monetary Policy," American Economic Review, American Economic Association, vol. 93(1), pages 265-278, March.
- Shin-ichi Fukuda, 2008.
"Knightian Uncertainty and Poverty Trap in a Model of Economic Growth,"
Review of Economic Dynamics,
Elsevier for the Society for Economic Dynamics, vol. 11(3), pages 652-663, July.
- Shin-ichi Fukuda, 2007. "Knightian Uncertainty and Poverty Trap in a Model of Economic Growth," CIRJE F-Series CIRJE-F-502, CIRJE, Faculty of Economics, University of Tokyo.
- Marc P. Giannoni & Michael Woodford, 2003.
"Optimal Interest-Rate Rules: II. Applications,"
NBER Working Papers
9420, National Bureau of Economic Research, Inc.
- Kimura, Takeshi & Kurozumi, Takushi, 2007.
"Optimal monetary policy in a micro-founded model with parameter uncertainty,"
Journal of Economic Dynamics and Control,
Elsevier, vol. 31(2), pages 399-431, February.
- Takeshi Kimura & Takushi Kurozumi, 2003. "Optimal monetary policy in a micro-founded model with parameter uncertainty," Finance and Economics Discussion Series 2003-67, Board of Governors of the Federal Reserve System (U.S.).
- Epstein, Larry G & Wang, Tan, 1994. "Intertemporal Asset Pricing Under Knightian Uncertainty," Econometrica, Econometric Society, vol. 62(2), pages 283-322, March.
- Marc P. Giannoni & Michael Woodford, 2003.
"Optimal Interest-Rate Rules: I. General Theory,"
506439000000000384, UCLA Department of Economics.
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