期刊名称：Birkbeck Working Papers in Economics and Finance / School of Economics, Mathematics and Statistics, Birkbeck College
印刷版ISSN：1745-8587
出版年度：2007
卷号：2007
出版社：London University
摘要：In order to assess the relationship between internal and external innovative
inputs and innovative output at firm level, a knowledge production function is
estimated for a representative sample of Italian manufacturing firms over the
period 1998-2003. To account for endogeneity of R&D effort in the knowledge
production function, we estimate a Heckman selection model on R&D decisions.
Results support the view that R&D intensity is positively linked to firm
size, age and human capital endowment as well as to higher exposure to
international competitive pressure. Then, the knowledge production function is
estimated using a standard probit, where the probability to innovate of each
firm depends upon intramural R&D effort, regional and industrial spillovers
and on a vector of interaction and control variables. Our measures of external
knowledge, which circulates and potentially transfers across firms belonging to
the same geographical or industrial spaces, are based on predicted values for
R&D effort in the region and industry respectively. Our results suggest a
positive relationship between sectoral spillovers and innovation;
knowledge diffusion in the regional space positively impacts on the probability
to innovate of the recipient firm only if the latter has an appropriate
endowment of human capital.
