Abstract
Two types of adjustment cost specifications coexist in macroeconomic models with investment: intertemporal adjustment costs which involve a nonlinear substitution between capital and investment in capital accumulation, and multisectoral costs which are captured by a nonlinear transformation between consumption and investment. This paper demonstrates a functional equivalence between these two specifications. One surprising result is that an increase in multisectoral adjustment costs can be equivalent to a decrease in intertemporal adjustment costs, depending upon the size of the intertemporal costs. We then observe that the functional equivalence implies a problem in identifying the two types of adjustment costs and show ways to solve the problem.
Original language | English |
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Pages (from-to) | 533-549 |
Number of pages | 17 |
Journal | Journal of Economic Dynamics and Control |
Volume | 27 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2003 Feb |
Externally published | Yes |
Keywords
- Functional equivalence
- Identification
- Intertemporal adjustment costs
- Investment adjustment costs
- Multisectoral adjustment costs
ASJC Scopus subject areas
- Economics and Econometrics
- Control and Optimization
- Applied Mathematics