Investment and Sales: Some Empirical Evidence
Andrew Abel () and
Olivier Blanchard ()
No 2050, NBER Working Papers from National Bureau of Economic Research, Inc
This paper attempts to give a structural interpretation to the distributed lag of sales on investment at the two-digit level in US manufacturing. It first presents a simple model which captures the various sources of lags and their respective implications. It then estimates the model, using both data on investment and sales as well as direct evidence on the sources of lags. The spirit of the paper is exploratory ; the model is used mainly as a vehicle to construct, present and interpret the data. We find that the following model can roughly generate the distributed lag structure found in the data. Firms face delivery lags of 3 quarters. They also face adjustment costs, which lead them to take into account expected future sales, with discount factor -9 when constructing the desired capital stock, and to close about 5% of the gap between actual and desired capital per quarter. They pay for orders at a constant rate between the time of order and that of delivery. The model is however not very successful in explaining differences in dynamics across sectors.
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Published as From Dynamic Econometric Modeling: Proceedings of the Third International Symposium in Economic Theory & Econometrics, edited by William A. Barnett, Ernst Berndt, and Halbert White, pp. 269-296. New York: Cambridge Univ-ersity Press, 1988.
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