We examine the impact of internal and external R&D on labor productivity in a 6-year panel of 304 innovating firms. We apply a dynamic linear panel data model that allows for decreasing returns to scale in internal and external R&D with a non-linear approximation of changes in the knowledge...

We analyse the finite sample properties of maximum likelihood estimators for dynamic panel data models. In particular, we consider transformed maximum likelihood (TML) and random effects maximum likelihood (RML) estimation. We show that TML and RML estimators are solutions to a cubic...

In a recent paper Lichtenberg (1994) proposes a test of the convergence hypothesis that the variance of productivity across countries decreases over time. He argues that the ratio of the variance in the first period to that in the last period of the time series is F-distributed but overlooks the...

The anecdotal evidence provided by the literature on high tech clusters has paved the way to systematic explorations of the localized effects of academic research on technological success and economic development. Prime drivers of such development are new entrants. New entrants are more likely...

The anecdotal evidence provided by the literature on high tech clusters has paved the way to systematic explorations of the localized effects of academic research on technological success and economic development. Prime drivers of such development are new entrants. New entrants are more likely...

Intellectual Property Rights (IPRs) are a key driver of economic growth as they provide agents with incentives to invest in Research and Development (R&D). The importance of IPRs should however vary when one moves along the technological frontier as firms can rely upon other mechanisms (i.e....

New entrepreneurial ventures may represent a viable and effective mechanism to transform academic knowledge into regional economic growth. We test this notion for the Italian provinces between 2001 and 2006. We evaluate three outputs of academic activities: teaching, research and Intellectual...

The quality of academic research and research undertaken at public laboratories is an important determinant of successful technology transfer. Corporate innovativeness may benefit considerably from scientific discoveries at universities or public laboratories and from the availability of locally...