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Dynamics of the price distribution in a general model of state-dependent pricing

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  • James Costain

    ()
    (Banco de España)

  • Antón Nákov

    ()
    (Banco de España)

Abstract

This paper analyzes the effects of monetary shocks in a DSGE model that allows for a general form of smoothly state-dependent pricing by firms. As in Dotsey, King, and Wolman (1999) and Caballero and Engel (2007), our setup is based on one fundamental property: firms are more likely to adjust their prices when doing so is more valuable. The exogenous timing (Calvo 1983) and fixed menu cost (Golosov and Lucas 2007) models are nested as limiting cases of our setup. Our model is calibrated to match the steady-state distribution of price adjustments in microdata; realism calls for firm-specific shocks. Computing a dynamic general equilibrium requires us to calculate how the distribution of prices and productivities evolves over time. We solve the model using the method of Reiter (2008), which is well-suited to this type of problem because it combines a fully nonlinear treatment of firm-level state variables with a linearization of the aggregate dynamics. We compute impulse responses to iid and autocorrelated money growth shocks, and decompose the inflation impact into 'intensive margin', 'extensive margin' and 'selection' components. Under our most successful calibration, increased money growth causes a persistent rise in inflation and output. The real effects are substantially larger if money growth is autocorrelated. In contrast, if we instead impose a fixed menu cost specification, money growth shocks cause a sharp spike in inflation (via the selection component) so that the real effects are small and short-lived, especially if money growth is iid. An increase in aggregate productivity raises consumption but causes labor to fall. Also, impulse responses differ depending on the distribution at the time the shock occurs. In particular, increased money growth has different effects starting from the steady state distribution than it does if all firms have recently received an economy-wide productivity shock.

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Bibliographic Info

Paper provided by Banco de Espa�a in its series Banco de Espa�a Working Papers with number 0831.

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Length: 46 pages
Date of creation: Jan 2009
Date of revision:
Handle: RePEc:bde:wpaper:0831

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Keywords: price stickiness; state-dependent pricing; stochastic menu costs; generalized (S; s); heterogeneous agents; distributional dynamics;

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References

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Cited by:
  1. Emi Nakamura & Jón Steinsson, 2008. "Monetary Non-Neutrality in a Multi-Sector Menu Cost Model," NBER Working Papers 14001, National Bureau of Economic Research, Inc.
  2. Reiter, Michael, 2010. "Approximate and Almost-Exact Aggregation in Dynamic Stochastic Heterogeneous-Agent Models," Economics Series 258, Institute for Advanced Studies.

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