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Investment, Tobin's Q, and Multiple Capital Inputs

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  • Robert S. Chirinko

Abstract

Despite their solid theoretical basis, models of business investment based on Tobin's Q theory have recorded a generally disappointing empirical performance. This paper examines one possible source of misspecification. When the firm's technology is expanded to include two or more capital inputs, the investment equation following from maximizing behavior includes Q as well as a series of additional explanatory variables. The importance of these omitted variables is assessed, and the econometric evidence is mixed, as the Multi-Capital Q model clearly dominates the Conventional specification but empirical problems remain. In addition, the implications of the parameter estimates from the Conventional and Multi-Capital models for tax policy are noted.

Suggested Citation

  • Robert S. Chirinko, 1986. "Investment, Tobin's Q, and Multiple Capital Inputs," NBER Working Papers 2033, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:2033 Note: EFG
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    1. Wu, De-Min, 1973. "Alternative Tests of Independence Between Stochastic Regressors and Disturbances," Econometrica, Econometric Society, vol. 41(4), pages 733-750, July.
    2. Mussa, Michael L, 1977. "External and Internal Adjustment Costs and the Theory of Aggregate and Firm Investment," Economica, London School of Economics and Political Science, vol. 44(174), pages 163-178, May.
    3. Hansen, Lars Peter & Sargent, Thomas J., 1980. "Formulating and estimating dynamic linear rational expectations models," Journal of Economic Dynamics and Control, Elsevier, vol. 2(1), pages 7-46, May.
    4. Nerlove, Marc, 1972. "Lags in Economic Behavior," Econometrica, Econometric Society, vol. 40(2), pages 221-251, March.
    5. Hausman, Jerry, 2015. "Specification tests in econometrics," Applied Econometrics, Publishing House "SINERGIA PRESS", vol. 38(2), pages 112-134.
    6. Tobin, James, 1969. "A General Equilibrium Approach to Monetary Theory," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 1(1), pages 15-29, February.
    7. Poterba, James M. & Summers, Lawrence H., 1983. "Dividend taxes, corporate investment, and `Q'," Journal of Public Economics, Elsevier, vol. 22(2), pages 135-167, November.
    8. Granger, C. W. J. & Newbold, P., 1974. "Spurious regressions in econometrics," Journal of Econometrics, Elsevier, vol. 2(2), pages 111-120, July.
    9. Seater, John J., 1982. "Marginal federal personal and corporate income tax rates in the U.S., 1909-1975," Journal of Monetary Economics, Elsevier, vol. 10(3), pages 361-381.
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    Cited by:

    1. Georgy Idrisov, 2010. "Factors of Demand for Imported Goods for Investment Purpose to Russia," Research Paper Series, Gaidar Institute for Economic Policy, issue 138P.
    2. Kaies Samet, 2010. "The creative intelligence," Working paper serie RMT - Grenoble Ecole de Management hal-00512539, HAL.

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