Capital Heterogeneity: Does it Matter? Fundamental Q and Investment on a Panel of Italian Firms
48 Pages Posted: 4 Dec 2001 Last revised: 18 Aug 2012
Date Written: October 1, 2001
Abstract
In this paper we study the determinants of investment decisions at the firm level with heterogeneous capital goods. We exploit a newly developed panel dataset of small and medium-sized firms which allows us to distinguish between purchases, sales, and net acquisitions of capital goods. We distinguish between equipment and structures and test the assumption of convex adjustment costs. Since our firms are mostly unlisted, the standard Q model based on stock market valuation is no longer appropriate. Instead, we use the fundamental Q approach proposed by Abel and Blanchard (1986) and Gilchrist and Himmelberg (1995) and extend it to the case of several capital inputs. The results show that the standard convex costs model fits very well equipment and but not structures. We find evidence for non-convexities in the case of structures.
Keywords: Investment, Q, heterogeneous capital goods, VAR estimation, panel data
JEL Classification: D24, G31, C33, C34
Suggested Citation: Suggested Citation
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