Fixed Costs: The Demise of Marginal q / Ricardo J. Caballero, John V. Leahy.

By:

Caballero, Ricardo J

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Material type: Text

TextSeries: Working Paper Series (National Bureau of Economic Research) ; no. w5508.Publication details: Cambridge, Mass. National Bureau of Economic Research 1996.Description: 1 online resource: illustrations (black and white)Subject(s):

E22 - Investment • Capital • Intangible Capital • Capacity

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Abstract: The standard version of q theory, in which investment is positively related to marginal q, breaks down in the presence of fixed costs of adjustment. With fixed costs, investment is a non-monotonic function of q. Therefore its inverse, which is the traditional investment function, does not exist. Depending upon auxiliary assumptions, the correlation between investment and marginal q can be either positive or negative. Given certain homogeneity assumptions, a version of the theory based on average q still holds, although under the same assumptions profits and sales perform as well as average q. More generally, q is no longer a sufficient statistic.

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Item type	Home library	Collection	Call number	Status	Date due	Barcode	Item holds
Working Paper	Biblioteca Digital	Colección NBER	nber w5508 (Browse shelf(Opens below))	Not For Loan

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March 1996.

The standard version of q theory, in which investment is positively related to marginal q, breaks down in the presence of fixed costs of adjustment. With fixed costs, investment is a non-monotonic function of q. Therefore its inverse, which is the traditional investment function, does not exist. Depending upon auxiliary assumptions, the correlation between investment and marginal q can be either positive or negative. Given certain homogeneity assumptions, a version of the theory based on average q still holds, although under the same assumptions profits and sales perform as well as average q. More generally, q is no longer a sufficient statistic.