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Robust Monetary Rules under Unstructured and Structured Model Uncertainty

Author

Listed:
  • Paul Levine

    (University of Surrey)

  • Joseph Pearlman

    (London Metropolitan University)

Abstract

This paper compares two contrasting approaches to robust monetary policy design. The first developed by Hansen and Sargent (2003, 2007) assumes unstructured model uncertainty and uses a minimax robustness criterion to design monetary rules. This contrasts with an older literature that structures uncertainty by seeking rules that are robust across competing views of the economy. This paper carries out and compares robust design exercises using both approaches using a standard ‘canonical New Keynesian model’. We pay particular attention to a number of issues: First, we distinguish three possible forms of the implied game between malign nature and the policymaker in the Hansen-Sargent procedure. Second, in both approaches, we examine the consequences for robust rules of the zero lower bound (ZLB) constraint on the nominal interest rate, the monetary instrument. Finally, again for both types of robustness exercise we explore the implications of policy design when the policymaker is obliged to use simple Taylor-type interest rate rules.

Suggested Citation

  • Paul Levine & Joseph Pearlman, 2007. "Robust Monetary Rules under Unstructured and Structured Model Uncertainty," School of Economics Discussion Papers 0707, School of Economics, University of Surrey.
  • Handle: RePEc:sur:surrec:0707
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    File URL: https://repec.som.surrey.ac.uk/2007/DP07-07.pdf
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    References listed on IDEAS

    as
    1. Batini, Nicoletta & Justiniano, Alejandro & Levine, Paul & Pearlman, Joseph, 2006. "Robust inflation-forecast-based rules to shield against indeterminacy," Journal of Economic Dynamics and Control, Elsevier, vol. 30(9-10), pages 1491-1526.
    2. Andrew Levin & Volker Wieland & John C. Williams, 2003. "The Performance of Forecast-Based Monetary Policy Rules Under Model Uncertainty," American Economic Review, American Economic Association, vol. 93(3), pages 622-645, June.
    3. Currie,David & Levine,Paul, 2009. "Rules, Reputation and Macroeconomic Policy Coordination," Cambridge Books, Cambridge University Press, number 9780521104609.
    4. Coenen, Gunter & Wieland, Volker, 2003. "The zero-interest-rate bound and the role of the exchange rate for monetary policy in Japan," Journal of Monetary Economics, Elsevier, vol. 50(5), pages 1071-1101, July.
    5. Andrew P. Blake & Tatiana Kirsanova, 2012. "Discretionary Policy and Multiple Equilibria in LQ RE Models," Review of Economic Studies, Oxford University Press, vol. 79(4), pages 1309-1339.
    6. J. Tetlow, Robert & von zur Muehlen, Peter, 2001. "Robust monetary policy with misspecified models: Does model uncertainty always call for attenuated policy?," Journal of Economic Dynamics and Control, Elsevier, vol. 25(6-7), pages 911-949, June.
    7. Levine, Paul & McAdam, Peter & Pearlman, Joseph, 2008. "Quantifying and sustaining welfare gains from monetary commitment," Journal of Monetary Economics, Elsevier, vol. 55(7), pages 1253-1276, October.
    8. Adam, Klaus & Billi, Roberto M., 2007. "Discretionary monetary policy and the zero lower bound on nominal interest rates," Journal of Monetary Economics, Elsevier, vol. 54(3), pages 728-752, April.
    9. Coenen, Gunter, 2007. "Inflation persistence and robust monetary policy design," Journal of Economic Dynamics and Control, Elsevier, vol. 31(1), pages 111-140, January.
    10. Hansen, Lars Peter & Sargent, Thomas J., 2003. "Robust control of forward-looking models," Journal of Monetary Economics, Elsevier, vol. 50(3), pages 581-604, April.
    11. Giannoni, Marc P., 2002. "Does Model Uncertainty Justify Caution? Robust Optimal Monetary Policy In A Forward-Looking Model," Macroeconomic Dynamics, Cambridge University Press, vol. 6(01), pages 111-144, February.
    12. Eggertsson, Gauti B., 2006. "The Deflation Bias and Committing to Being Irresponsible," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 38(2), pages 283-321, March.
    13. Levine, Paul & McAdam, Peter & Pierse, Richard & Pearlman, Joseph G., 2008. "Risk Management in Action. Robust monetary policy rules under structured uncertainty," Working Paper Series 870, European Central Bank.
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    Citations

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    Cited by:

    1. Paul Levine, 2012. "Monetary policy in an uncertain world: probability models and the design of robust monetary rules," Indian Growth and Development Review, Emerald Group Publishing, vol. 5(1), pages 70-88, April.
    2. Levine, Paul & McAdam, Peter & Pierse, Richard & Pearlman, Joseph G., 2008. "Risk Management in Action. Robust monetary policy rules under structured uncertainty," Working Paper Series 870, European Central Bank.
    3. Spanjers, Willy, 2008. "The Asian crisis and macroeconomic development: the impact of ambiguity," Economics Discussion Papers 2008-3, School of Economics, Kingston University London.

    More about this item

    Keywords

    robustness; structured and unstructured uncertainty; zero lower bound interest rate constraint;

    JEL classification:

    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E37 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Forecasting and Simulation: Models and Applications
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies

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