Fixed Costs: The Demise of Marginal q
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.
|Date of creation:||Mar 1996|
|Date of revision:|
|Contact details of provider:|| Postal: |
Web page: http://www.nber.org
More information through EDIRC
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.:
- Hayashi, Fumio, 1982.
"Tobin's Marginal q and Average q: A Neoclassical Interpretation,"
Econometric Society, vol. 50(1), pages 213-24, January.
- Fumio Hayashi, 1981. "Tobin's Marginal q and Average a : A Neoclassical Interpretation," Discussion Papers 457, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Russell Cooper & John Haltiwanger & Laura Power, 1995.
"Machine Replacement and the Business Cycle: Lumps and Bumps,"
NBER Working Papers
5260, National Bureau of Economic Research, Inc.
- John Haltiwanger & Russell Cooper & Laura Power, 1999. "Machine Replacement and the Business Cycle: Lumps and Bumps," American Economic Review, American Economic Association, vol. 89(4), pages 921-946, September.
- Russell Cooper & John Haltiwanger & Laura Power, 1995. "Machine Replacement and the Business Cycle: Lumps and Bumps," Papers 0062, Boston University - Industry Studies Programme.
- Flood, Robert P & Garber, Peter M, 1991.
"The Linkage between Speculative Attack and Target Zone Models of Exchange Rates,"
The Quarterly Journal of Economics,
MIT Press, vol. 106(4), pages 1367-72, November.
- Robert P. Flood & Peter M. Garber, 1989. "The Linkage Between Speculative Attack and Target Zone Models of Exchange Rates," NBER Working Papers 2918, National Bureau of Economic Research, Inc.
- Simon Gilchrist & Charles P. Himmelberg, 1995.
"Evidence on the Role of Cash Flow for Investment,"
95-01, New York University, Leonard N. Stern School of Business, Department of Economics.
- Gilchrist, S. & Himmelberg, C.P., 1995. "Evidence on the Role of Cash Flow for Investment," Papers 95-29, Columbia - Graduate School of Business.
- Simon Gilchrist & Charles P. Himmelberg, 1993. "Evidence on the role of cash flow for investment," Finance and Economics Discussion Series 93-7, Board of Governors of the Federal Reserve System (U.S.).
- Abel, Andrew B & Blanchard, Olivier J, 1986.
"The Present Value of Profits and Cyclical Movements in Investment,"
Econometric Society, vol. 54(2), pages 249-73, March.
- Andrew B. Abel & Olivier J. Blanchard, 1983. "The Present Value of Profits and Cyclical Movements in Investment," NBER Working Papers 1122, National Bureau of Economic Research, Inc.
- Mark Doms & Timothy Dunne, 1994.
"Capital Adjustment Patterns in Manufacturing Plants,"
94-11, Center for Economic Studies, U.S. Census Bureau.
- Mark E. Doms & Timothy Dunne, 1998. "Capital Adjustment Patterns in Manufacturing Plants," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 1(2), pages 409-429, April.
When requesting a correction, please mention this item's handle: RePEc:nbr:nberwo:5508. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ()
If references are entirely missing, you can add them using this form.