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Robust monetary rules under unstructured model uncertainty

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  • Levine, Paul
  • Pearlman, Joseph

Abstract

This paper revisits a widely adopted approach to robust decision making developed by (Hansen and Sargent, 2003) and (Hansen and Sargent, 2008)--henceforth HS--and applies it to monetary policy design in the face of model uncertainty. We pay particular attention to two issues: first, we distinguish three possible forms of the implied game between malign nature and the policymaker in the HS procedure each leading to a different robust and approximating equilibria. Second, we impose the zero lower bound (ZLB) constraint on the nominal interest rate. We show that the ZLB constraint has serious consequences for a policymaker pursuing HS-type robustness, especially when accompanied by an inability to commit.

Suggested Citation

  • Levine, Paul & Pearlman, Joseph, 2010. "Robust monetary rules under unstructured model uncertainty," Journal of Economic Dynamics and Control, Elsevier, vol. 34(3), pages 456-471, March.
  • Handle: RePEc:eee:dyncon:v:34:y:2010:i:3:p:456-471
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    References listed on IDEAS

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    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. Leitemo, Kai & Sã–Derstrã–M, Ulf, 2008. "Robust Monetary Policy In The New Keynesian Framework," Macroeconomic Dynamics, Cambridge University Press, vol. 12(S1), pages 126-135, April.
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    10. Carl E. Walsh, 2003. "Implications of a changing economic structure for the strategy of monetary policy," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 297-348.
    11. 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.
    12. 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.
    13. Paul Levine & Joseph Pearlman & George Perendia, 2007. "Estimating DSGE Models under Partial Information," CDMA Working Paper Series 200722, Centre for Dynamic Macroeconomic Analysis.
    14. 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.
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    21. 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.
    22. 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.
    23. Levine, Paul, 1992. "Should Rules Be Simple?," Economic Change and Restructuring, Springer, vol. 25(2), pages 113-138.
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    Cited by:

    1. Deak, S. & Levine, P. & Mirza, A. & Pearlman, J., 2019. "Designing Robust Monetary Policy Using Prediction Pools," Working Papers 19/11, Department of Economics, City University London.
    2. 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.
    3. Paul Levine & Joseph Pearlman & Peter Welz, 2008. "Robust Inflation-Targeting Rules and the Gains from International Policy Coordination," School of Economics Discussion Papers 0208, School of Economics, University of Surrey.
    4. Szabolcs Deak & Paul Levine & Afrasiab Mirza & Joseph Pearlman, 2020. "Is Price Level Targeting a Robust Monetary Rule?," Discussion Papers 20-27, Department of Economics, University of Birmingham.

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