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Imperfect Credibility versus No Credibility of Optimal Monetary Policy

Author

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  • Jean-Bernard Chatelain

    (PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris sciences et lettres - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, PJSE - Paris Jourdan Sciences Economiques - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris sciences et lettres - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

  • Kirsten Ralf

    (Ecole Supérieure du Commerce Extérieur - ESCE - International business school)

Abstract

When the probability of not reneging commitment of optimal monetary policy under quasi-commitment tends to zero, the limit of this equilibrium is qualitatively and quantitatively different from the discretion equilibrium assuming a zero probability of not reneging commitment for the classic example of the new-Keynesian Phillips curve. The impulse response functions and welfare are different. The policy rule parameter have opposite signs. The inflation auto-correlation parameter crosses a saddlenode bifurcation when shit.ng to near-zero to zero probability of not reneging commitment. These results are obtained for all values of the elasticity of substitution between goods in monopolistic competition which enters in the welfare loss function and in the slope of the new-Keynesian Phillips curve.

Suggested Citation

  • Jean-Bernard Chatelain & Kirsten Ralf, 2018. "Imperfect Credibility versus No Credibility of Optimal Monetary Policy," Working Papers halshs-01849864, HAL.
    • Handle: RePEc:hal:wpaper:halshs-01849864
    Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-01849864
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    References listed on IDEAS

    as
    1. Jean-Bernard Chatelain & Kirsten Ralf, 2019. "A Simple Algorithm for Solving Ramsey Optimal Policy with Exogenous Forcing Variables," Economics Bulletin, AccessEcon, vol. 39(4), pages 2429-2440.
    2. Mark Gertler & Jordi Gali & Richard Clarida, 1999. "The Science of Monetary Policy: A New Keynesian Perspective," Journal of Economic Literature, American Economic Association, vol. 37(4), pages 1661-1707, December.
    3. Jean-Bernard Chatelain & Kirsten Ralf, 2019. "A Simple Algorithm for Solving Ramsey Optimal Policy with Exogenous Forcing Variables," Economics Bulletin, AccessEcon, vol. 39(4), pages 2429-2440.
    4. Jean-Bernard Chatelain & Kirsten Ralf, 2018. "Publish and Perish: Creative Destruction and Macroeconomic Theory," Post-Print halshs-01884160, HAL.
    5. Chatelain, Jean-Bernard & Ralf, Kirsten, 2018. "Publish and Perish: Creative Destruction and Macroeconomic Theory," EconStor Open Access Articles and Book Chapters, ZBW - Leibniz Information Centre for Economics, vol. 46(2), pages 65-101.
    6. Chatelain, Jean-Bernard & Ralf, Kirsten, 2021. "Hopf Bifurcation From New-Keynesian Taylor Rule To Ramsey Optimal Policy," Macroeconomic Dynamics, Cambridge University Press, vol. 25(8), pages 2204-2236, December.
    7. Jean-Bernard Chatelain & Kirsten Ralf, 2020. "How macroeconomists lost control of stabilization policy: towards dark ages," The European Journal of the History of Economic Thought, Taylor & Francis Journals, vol. 27(6), pages 938-982, November.
    8. Sophocles Mavroeidis & Mikkel Plagborg-Møller & James H. Stock, 2014. "Empirical Evidence on Inflation Expectations in the New Keynesian Phillips Curve," Journal of Economic Literature, American Economic Association, vol. 52(1), pages 124-188, March.
    9. Blanchard, Olivier Jean & Kahn, Charles M, 1980. "The Solution of Linear Difference Models under Rational Expectations," Econometrica, Econometric Society, vol. 48(5), pages 1305-1311, July.
    10. Ippei Fujiwara & Timothy Kam & Takeki Sunakawa, 2016. "A note on imperfect credibility," CAMA Working Papers 2016-37, Centre for Applied Macroeconomic Analysis, Crawford School of Public Policy, The Australian National University.
    11. Jean-Bernard Chatelain & Kirsten Ralf, 2017. "Can We Identify the Fed's Preferences?," Working Papers halshs-01549908, HAL.
    12. Chatelain, Jean-Bernard & Ralf, Kirsten, 2020. "Hopf Bifurcation from New-Keynesian Taylor Rule to Ramsey Optimal Policy," EconStor Open Access Articles, ZBW - Leibniz Information Centre for Economics.
    13. Jean-bernard Chatelain & Kirsten Ralf, 2020. "The Welfare of Ramsey Optimal Policy Facing Auto-Regressive Shocks," Economics Bulletin, AccessEcon, vol. 40(2), pages 1797-1803.
    14. Davide Debortoli & Aeimit Lakdawala, 2016. "How Credible Is the Federal Reserve? A Structural Estimation of Policy Re-optimizations," American Economic Journal: Macroeconomics, American Economic Association, vol. 8(3), pages 42-76, July.
    15. Jean-Bernard Chatelain & Kirsten Ralf, 2018. "Publish and Perish: Creative Destruction and Macroeconomic Theory," PSE-Ecole d'économie de Paris (Postprint) halshs-01884160, HAL.
    16. Davide Debortoli & Ricardo Nunes, 2014. "Monetary Regime Switches and Central Bank Preferences," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 46(8), pages 1591-1626, December.
    17. Schaumburg, Ernst & Tambalotti, Andrea, 2007. "An investigation of the gains from commitment in monetary policy," Journal of Monetary Economics, Elsevier, vol. 54(2), pages 302-324, March.
    18. Fujiwara, Ippei & Kam, Timothy & Sunakawa, Takeki, 2019. "On two notions of imperfect credibility in optimal monetary policies," Economics Letters, Elsevier, vol. 174(C), pages 22-25.
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    1. Jean-Bernard Chatelain & Kirsten Ralf, 2020. "How macroeconomists lost control of stabilization policy: towards dark ages," The European Journal of the History of Economic Thought, Taylor & Francis Journals, vol. 27(6), pages 938-982, November.
    2. Chatelain, Jean-Bernard & Ralf, Kirsten, 2020. "The Welfare of Ramsey Optimal Policy Facing Auto-Regressive Shocks," EconStor Open Access Articles and Book Chapters, ZBW - Leibniz Information Centre for Economics, vol. 40(2), pages 1797-1803.
    3. Jean-Bernard Chatelain & Kirsten Ralf, 2020. "Ramsey Optimal Policy versus Multiple Equilibria with Fiscal and Monetary Interactions," Economics Bulletin, AccessEcon, vol. 40(1), pages 140-147.
    4. Chatelain, Jean-Bernard & Ralf, Kirsten, 2021. "Hopf Bifurcation From New-Keynesian Taylor Rule To Ramsey Optimal Policy," Macroeconomic Dynamics, Cambridge University Press, vol. 25(8), pages 2204-2236, December.
    5. Jean-Bernard Chatelain & Kirsten Ralf, 2018. "The Indeterminacy of Determinacy with Fiscal, Macro-prudential or Taylor Rules," Working Papers halshs-01877766, HAL.
    6. Jean-Bernard Chatelain & Kirsten Ralf, 2018. "Super-inertial interest rate rules are not solutions of Ramsey optimal monetary policy," PSE Working Papers halshs-01863367, HAL.
    7. William, Barnett & Hu, Jingxian, 2017. "Capital Control, Exchange Rate Regime, and Monetary Policy: Indeterminacy and Bifurcation," MPRA Paper 81450, University Library of Munich, Germany.

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    More about this item

    Keywords

    New-Keynesian Phillips curve; Credibility; Discretionary policy; Ramsey optimal policy;
    All these keywords.

    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
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • 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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