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Price Dispersion, Private Uncertainty, and Endogenous Nominal Rigidities

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  • Gaetano Gaballo

Abstract

This article shows that when agents learn from prices, large private uncertainty may result from a small amount of heterogeneity. As in a Phelps–Lucas island model, final producers look at the prices of their local inputs to infer aggregate conditions. However, market linkages between islands make the informativeness of local prices endogenous to general equilibrium relations. In this context, I show that a vanishingly small heterogeneity in local conditions is enough to generate an equilibrium in which prices are rigid to aggregate shocks and transmit only partial information. I use this insight as a microfoundation for price rigidity in an otherwise frictionless monetary model and show that even a tiny amount of dispersion in fundamentals can lead to large non-neutrality of money.

Suggested Citation

  • Gaetano Gaballo, 2018. "Price Dispersion, Private Uncertainty, and Endogenous Nominal Rigidities," Review of Economic Studies, Oxford University Press, vol. 85(2), pages 1070-1110.
  • Handle: RePEc:oup:restud:v:85:y:2018:i:2:p:1070-1110.
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    File URL: http://hdl.handle.net/10.1093/restud/rdx043
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    Citations

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    Cited by:

    1. Gaetano Gaballo, 2016. "Rational Inattention to News: The Perils of Forward Guidance," American Economic Journal: Macroeconomics, American Economic Association, vol. 8(1), pages 42-97, January.
    2. George-Marios Angeletos & Chen Lian, 2016. "Incomplete Information in Macroeconomics: Accommodating Frictions in Coordination," NBER Working Papers 22297, National Bureau of Economic Research, Inc.
    3. Isabella Blengini & Kenza Benhima, 2016. "Optimal Monetary Policy when Information is Market-Generated," 2016 Meeting Papers 1223, Society for Economic Dynamics.
    4. S. Dupraz, 2017. "A Kinked-Demand Theory of Price Rigidity," Working papers 656, Banque de France.

    More about this item

    Keywords

    Learning from prices; Expectational coordination; Dispersed information;

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • E3 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles

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