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One Who Hesitates Is Lost: Monetary Policy Under Model Uncertainty and Model Misspecification

Author

Listed:
  • Viktors Ajevskis

    (Latvijas Banka)

Abstract
This paper investigates how different parametrisation of the monetary policy reaction function and different mechanisms of expectations formation shape the macroeconomic outcomes in the Smets-Wouters type DSGE model. The initial macroeconomic conditions of the simulations correspond to the high inflation environment of early 2022. The simulation results show that under the hybrid expectations the terminal monetary policy rate is significantly higher than under the rational expectations for all Taylor rule parametrisations. Under the hybrid expectations, the inflation rate is much more persistent than under the rational expectations; three years is not enough to reach the inflation target of two per cent even for quite hawkish calibration of the Taylor rule. In the modelled economy, a relatively fast inflation stabilization for the hawkish Taylor rule has its own price in form of the cumulative output loss when compared with the dovish Taylor rule. Simulations are also performed for the case where the central bank misspecifies expectations formation mechanism in the DSGE model and follows an interest rate path implied by a false model. The results show that the hawkish reaction is preferable for both rightly and wrongly specified models.

Suggested Citation

  • Viktors Ajevskis, 2024. "One Who Hesitates Is Lost: Monetary Policy Under Model Uncertainty and Model Misspecification," Working Papers 2024/07, Latvijas Banka.
    • Handle: RePEc:ltv:wpaper:202407
    as

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    File URL: https://datnes.latvijasbanka.lv/papers/WP_7-2024.pdf
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    References listed on IDEAS

    as
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    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    DSGE; Monetary policy; Expectations; High inflation; Loss function;
    All these keywords.

    JEL classification:

    • C62 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Existence and Stability Conditions of Equilibrium
    • C63 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Computational Techniques
    • D9 - Microeconomics - - Micro-Based Behavioral Economics
    • D58 - Microeconomics - - General Equilibrium and Disequilibrium - - - Computable and Other Applied General Equilibrium Models

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