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Determinacy, Learnability, Plausibility, and the Role of Money in New Keynesian Models

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  • Bennett T. McCallum

Abstract

Recent mainstream monetary policy analysis focuses on rational expectation solutions that are uniquely stable. A number of recent studies have examined the question of whether typical New Keynesian (NK) models, with policy rules that satisfy the Taylor principle, also exhibit solutions with explosive inflation that cannot be ruled out by any transversality condition or any other generally accepted economic principle. This paper contributes to that debate by supporting and developing previous arguments suggesting that such explosive solutions are informationally infeasible. It also critiques prevailing notions of "determinancy" and outlines two alternative approaches to solution selection.

Suggested Citation

  • Bennett T. McCallum, 2012. "Determinacy, Learnability, Plausibility, and the Role of Money in New Keynesian Models," NBER Working Papers 18215, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:18215
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    References listed on IDEAS

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    1. Patrick Minford & Naveen Srinivasan, 2011. "Determinacy in New Keynesian Models: A Role for Money after All?," International Finance, Wiley Blackwell, vol. 14(2), pages 211-229, June.
    2. Richard Clarida & Jordi Galí & Mark Gertler, 2000. "Monetary Policy Rules and Macroeconomic Stability: Evidence and Some Theory," The Quarterly Journal of Economics, Oxford University Press, vol. 115(1), pages 147-180.
    3. John H. Cochrane, 2011. "Determinacy and Identification with Taylor Rules," Journal of Political Economy, University of Chicago Press, vol. 119(3), pages 565-615.
    4. Bullard, James & Mitra, Kaushik, 2002. "Learning about monetary policy rules," Journal of Monetary Economics, Elsevier, vol. 49(6), pages 1105-1129, September.
    5. Cho, Seonghoon & Moreno, Antonio, 2011. "The forward method as a solution refinement in rational expectations models," Journal of Economic Dynamics and Control, Elsevier, vol. 35(3), pages 257-272, March.
    6. Bennett T. Mccallum, 2011. "Causality, Structure And The Uniqueness Of Rational Expectations Equilibria," Manchester School, University of Manchester, vol. 79(s1), pages 551-566, June.
    7. Minford, Patrick & Srinivasan, Naveen, 2011. "Ruling out unstable equilibria in New Keynesian models," Economics Letters, Elsevier, vol. 112(3), pages 247-249, September.
    8. Flood, Robert P & Garber, Peter M, 1980. "An Economic Theory of Monetary Reform," Journal of Political Economy, University of Chicago Press, vol. 88(1), pages 24-58, February.
    9. Honkapohja, Seppo & Mitra, Kaushik, 2004. "Are non-fundamental equilibria learnable in models of monetary policy?," Journal of Monetary Economics, Elsevier, vol. 51(8), pages 1743-1770, November.
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    Cited by:

    1. Bennett T. McCallum, 2012. "A Continuity Refinement for Rational Expectations Solutions," NBER Working Papers 18323, National Bureau of Economic Research, Inc.
    2. Cho, Seonghoon & McCallum, Bennett T., 2015. "Refining linear rational expectations models and equilibria," Journal of Macroeconomics, Elsevier, vol. 46(C), pages 160-169.
    3. Shesadri Banerjee, 2013. "Inflation Volatility and Activism of Monetary Policy," CEGAP Working Papers 2013_06, Durham University Business School.

    More about this item

    JEL classification:

    • C61 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Optimization Techniques; Programming Models; Dynamic Analysis
    • C62 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Existence and Stability Conditions of Equilibrium
    • E37 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Forecasting and Simulation: Models and Applications
    • E47 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Forecasting and Simulation: Models and Applications

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