NBER

Mark Bils, Peter J. Klenow, Cian Ruane

Bibliographic Information

NBER Working Paper No. 26711
Issued in January 2020
NBER Program(s):EFG, PR

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Abstract

The ratio of revenue to inputs differs greatly across plants within countries such as the U.S. and India. Such gaps may reflect misallocation which hinders aggregate productivity. But differences in measured average products need not reflect differences in true marginal products. We propose a way to estimate the gaps in true marginal products in the presence of measurement error. Our method exploits how revenue growth is less sensitive to input growth when a plant’s average products are overstated by measurement error. For Indian manufacturing from 1985-2013, our correction lowers potential gains from reallocation by 20%. For the U.S. the effect is even more dramatic, reducing potential gains by 60% and eliminating 2/3 of a severe downward trend in allocative efficiency over 1978-2013.

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