We estimate that returns to scale are close to constant in two-digit gross output data. Value-added data appear instead to give significant increasing returns. We show why, with imperfect competition, value-added estimates are in general meaningless. We use data on intermediate inputs to correct the value-added estimates, and find that returns to scale again appear close to constant. Given that profits are small, our results imply that markups of price over marginal cost are also small.
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References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
Julio J. Rotemberg & Michael Woodford, 1991.
"Markups and the Business Cycle,"
NBER Chapters,
in: NBER Macroeconomics Annual 1991, Volume 6, pages 63-140
National Bureau of Economic Research, Inc.
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Bruno, Michael, 1978.
"Duality, Intermediate Inputs and Value-Added,"
Histoy of Economic Thought Chapters,
in: Fuss, Melvyn & McFadden, Daniel (ed.), Production Economics: A Dual Approach to Theory and Applications, volume 2, chapter 1
McMaster University Archive for the History of Economic Thought.
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