An Extended Accelerator Model of R&D and Physical Investment
In: R&D, Patents, and Productivity
Using a multivariate autoregressive framework, we have found a simple causal structure for the variables of interest q, s, r, and i, which is consistent with our data. As expected from the stock market efficiency hypothesis, q, the stock market one period holding rate of return, is exogenous relative to the other three variables (or Granger causes them). As postulated in the traditional accelerator model of investment, the rate of growth of sales, s, can be also treated as exogenous to the rates of growth of R&D and physical. investment, r and i. Moreover, no strong feed- back interaction is detected between the last two (r and i). Within the simple structure of the extended accelerator model, the substantive conclusion is that R&D and physical investment react very similarly to the growth of the sales and to movements in q; the response of R&D is, however, more stable or less irregular than that of physical investment. Expected demand and expected profitability thus both appear to be important determinants for R&D expenditures and physical investment.
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- Robert J. Shiller, 1980.
"Do Stock Prices Move Too Much to be Justified by Subsequent Changes in Dividends?,"
NBER Working Papers
0456, National Bureau of Economic Research, Inc.
- Shiller, Robert J, 1981. "Do Stock Prices Move Too Much to be Justified by Subsequent Changes in Dividends?," American Economic Review, American Economic Association, vol. 71(3), pages 421-36, June.
- Engle, Robert F & Foley, Duncan K, 1975. "An Asset Price Model of Aggregate Investment," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 16(3), pages 625-47, October.
- Pierce, David A. & Haugh, Larry D., 1977. "Causality in temporal systems : Characterization and a survey," Journal of Econometrics, Elsevier, vol. 5(3), pages 265-293, May.
- Jorgenson, Dale W, 1971. "Econometric Studies of Investment Behavior: A Survey," Journal of Economic Literature, American Economic Association, vol. 9(4), pages 1111-47, December.
- Lawrence H. Summers, 1980. "Inflation, Taxation, and Corporate Investment: A q-Theory Approach," NBER Working Papers 0604, National Bureau of Economic Research, Inc.
- M. Ishaq Nadiri & George C. Bitros, 1980. "Research and Development Expenditures and Labor Productivity at the Firm Level: A Dynamic Model," NBER Chapters, in: New Developments in Productivity Measurement, pages 387-418 National Bureau of Economic Research, Inc.
- Thomas J. Sargent & Christopher A. Sims, 1977.
"Business cycle modeling without pretending to have too much a priori economic theory,"
55, Federal Reserve Bank of Minneapolis.
- Tom Doan, . "RATS program to estimate observable index model from Sargent-Sims(1977)," Statistical Software Components RTZ00126, Boston College Department of Economics.
- Granger, C. W. J., 1980. "Testing for causality : A personal viewpoint," Journal of Economic Dynamics and Control, Elsevier, vol. 2(1), pages 329-352, May.
- Sims, Christopher A, 1972. "Money, Income, and Causality," American Economic Review, American Economic Association, vol. 62(4), pages 540-52, September.
- Fama, Eugene F, 1970. "Efficient Capital Markets: A Review of Theory and Empirical Work," Journal of Finance, American Finance Association, vol. 25(2), pages 383-417, May.
- Christopher A. Sims, 1972. "Are There Exogenous Variables in Short-Run Production Relations," NBER Chapters, in: Annals of Economic and Social Measurement, Volume 1, number 1, pages 16-35 National Bureau of Economic Research, Inc.
- Zvi Griliches & Jacques Mairesse, 1981. "Productivity and R and D at the Firm Level," NBER Working Papers 0826, National Bureau of Economic Research, Inc.
- 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.
- George M. Von Furstenberg, 1977. "Corporate Investment: Does Market Valuation Matter in the Aggregate?," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 8(2), pages 347-408.
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