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Saddlepath learning, MSV learning and consistency of subjective expectations

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  • Cho, Seonghoon

Abstract

Ellison and Pearlman (2011) show that determinacy implies e-stability under both full and lagged information if (1) subjective expectations are consistent with a structural model and unbiased, and (2) a learning process is given by the saddlepath relationship. This study clarifies that their equivalence result under any information set is a consequence of their assumptions about bounded rationality. The same result also holds for the standard MSV learning approach under consistency or unbiasedness assumption. Without these assumptions, the equivalence result no longer holds for either saddlepath or MSV learning.

Suggested Citation

  • Cho, Seonghoon, 2014. "Saddlepath learning, MSV learning and consistency of subjective expectations," Economics Letters, Elsevier, vol. 125(2), pages 319-322.
    • Handle: RePEc:eee:ecolet:v:125:y:2014:i:2:p:319-322
    DOI: 10.1016/j.econlet.2014.09.034
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    References listed on IDEAS

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    1. Ellison, Martin & Pearlman, Joseph, 2011. "Saddlepath learning," Journal of Economic Theory, Elsevier, vol. 146(4), pages 1500-1519, July.
    2. Bullard, James & Mitra, Kaushik, 2002. "Learning about monetary policy rules," Journal of Monetary Economics, Elsevier, vol. 49(6), pages 1105-1129, September.
    3. 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.
    4. McCallum, Bennett T., 2007. "E-stability vis-a-vis determinacy results for a broad class of linear rational expectations models," Journal of Economic Dynamics and Control, Elsevier, vol. 31(4), pages 1376-1391, April.
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    More about this item

    Keywords

    Determinacy; E-stability; Saddlepath learning; MSV learning; Consistency assumption;
    All these keywords.

    JEL classification:

    • D8 - Microeconomics - - Information, Knowledge, and Uncertainty
    • E1 - Macroeconomics and Monetary Economics - - General Aggregative Models
    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit

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