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The B.E. Journal of Macroeconomics

Editor-in-Chief: Cavalcanti, Tiago / Kambourov, Gueorgui

Ed. by Abraham, Arpad / Carceles-Poveda , Eva / Debortoli, Davide / Lambertini, Luisa / Nimark, Kristoffer / Schwartzman, Felipe / Wang, Pengfei

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CiteScore 2017: 0.62

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Source Normalized Impact per Paper (SNIP) 2017: 0.605

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Policy Distortions and Aggregate Productivity: The Role of Idiosyncratic Shocks

Jose Maria Da Rocha / Pau Salvador Pujolas
Published Online: 2011-11-30 | DOI: https://doi.org/10.2202/1935-1690.2297

We consider policy distortions in a model where plants face idiosyncratic productivity shocks that evolve following a Brownian motion. Introducing idiosyncratic shocks into the model implies that plants have non-constant operating profits and as a result there is an endogenous exit margin and incumbent plants must decide in each period whether or not to remain in the industry. By using the forward Kolmogorov equation, we analytically characterize the Stationary Equilibrium. Our main contribution is to show that if a model is being calibrated/estimated without idiosyncratic shocks, where plants face constant productivity over time and the exit rate is exogenous to fit data generated from a model with shocks and endogenous entry, TFP distortions will be overestimated.

Keywords: TFP; plant heterogeneity; productivity; policy distortions

About the article

Published Online: 2011-11-30

Citation Information: The B.E. Journal of Macroeconomics, Volume 11, Issue 1, ISSN (Online) 1935-1690, DOI: https://doi.org/10.2202/1935-1690.2297.

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