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Should central banks respond to the persistence of shocks?

Author

Listed:
  • Jean-Bernard Chatelain

    (CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique, 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 - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - ENPC - École nationale des ponts et chaussées - IP Paris - Institut Polytechnique de Paris)

  • Kirsten Ralf

    (ESCE, International Business School - ESCE)

Abstract

If there is a non-negligible sensitivity of inflation to demand or supply exogenous and highly persistent shocks (which are not nearly fully damped in six quarters), it is optimal for central banks policy instrument to respond not only to inflation deviation from its target but also, in addition, to respond relatively more to this shock, the more it is persistent, and early enough. This policy instrument distinct response to persis- tent shocks in addition to its response to inflation is optimal because it decreases the sensitivity of inflation to the persistent shock. Then, inflation converges to its long run target faster than the highly persistent exogenous shock.

Suggested Citation

  • Jean-Bernard Chatelain & Kirsten Ralf, 2025. "Should central banks respond to the persistence of shocks?," PSE-Ecole d'économie de Paris (Postprint) halshs-05650533, HAL.
    • Handle: RePEc:hal:pseptp:halshs-05650533
    DOI: 10.2307/48857611
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