Arbeitspapier
Robust learning stability with operational monetary policy rules
We consider the robust stability of a rational expectations equilibrium, which we define as stability under discounted (constant gain) least-squares learning, for a range of gain parameters. We find that for operational forms of policy rules, ie rules that do not depend on contemporaneous values of endogenous aggregate variables, many interest-rate rules do not exhibit robust stability. We consider a variety of interest-rate rules, including instrument rules, optimal reaction functions under discretion or commitment, and rules that approximate optimal policy under commitment. For some reaction functions we allow for an interest-rate stabilization motive in the policy objective. The expectations-based rules proposed in Evans and Honkapohja (2003, 2006) deliver robust learning stability. In contrast, many proposed alternatives become unstable under learning even at small values of the gain parameter.
- ISBN
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978-952-462-411-4
- Language
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Englisch
- Bibliographic citation
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Series: Bank of Finland Research Discussion Papers ; No. 31/2007
- Classification
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Wirtschaft
Monetary Policy
Price Level; Inflation; Deflation
Expectations; Speculations
- Subject
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commitment
interest-rate setting
adaptive learning
stability
determinacy
- Event
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Geistige Schöpfung
- (who)
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Evans, George W.
Honkapohja, Seppo
- Event
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Veröffentlichung
- (who)
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Bank of Finland
- (where)
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Helsinki
- (when)
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2007
- Handle
- Last update
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10.03.2025, 11:42 AM CET
Data provider
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Object type
- Arbeitspapier
Associated
- Evans, George W.
- Honkapohja, Seppo
- Bank of Finland
Time of origin
- 2007