Depreciation, Deterioration and Obsolescence when there is Embodied or Disembodied Technical Change
The paper considers how to measure capital in a model where technical progress is either embodied in new units of capital or it is "disembodied" and simply causes the price of capital services to fall. The disembodied case is considered in sections 2-4. Sections 2 and 3 set out standard vintage capital aggregation models when there is no embodied technical progress. Section 4 discusses disembodied obsolescence in more detail. Section 5 introduces new (more efficient) models of the capital good so that technical progress is embodied in the new models. Section 6 shows how the parameters in the Jorgenson model of capital services could be estimated by statistical agencies if their investment surveys covered sales and retirements of used assets as well as purchases of new assets. Section 7 concludes.
|Date of creation:||23 Nov 2006|
|Date of revision:||13 Jul 2007|
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- Charles R. Hulten, 1992. "Growth Accounting When Technical Change is Embodied in Capital," NBER Working Papers 3971, National Bureau of Economic Research, Inc.
- Diewert, W E, 1974. "Intertemporal Consumer Theory and the Demand for Durables," Econometrica, Econometric Society, vol. 42(3), pages 497-516, May.
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- W. Erwin Diewert, 1980. "Aggregation Problems in the Measurement of Capital," NBER Chapters, in: The Measurement of Capital, pages 433-538 National Bureau of Economic Research, Inc.
- D. W. Jorgenson & Z. Griliches, 1967. "The Explanation of Productivity Change," Review of Economic Studies, Oxford University Press, vol. 34(3), pages 249-283.
- Hulten, Charles R & Wykoff, Frank C, 1996. "Issues in the Measurement of Economic Depreciation: Introductory Remarks," Economic Inquiry, Western Economic Association International, vol. 34(1), pages 10-23, January.
- Hulten, Charles R, 1992. "Growth Accounting When Technical Change Is Embodied in Capital," American Economic Review, American Economic Association, vol. 82(4), pages 964-80, September.
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