It is shown that spillovers can enhance private returns to innovation if they feed back into the dynamic research of the original inventor (Internalized spillovers), but will always reduce private returns, if the original inventor does not benefit from the advancements other inventors build into...

We analyze the incentives to disclose intermediate research results. We find that despite the help that disclosure can give to a rival, the leading innovator sometimes chooses to disclose. Disclosure signals commitment to the research project, which may induce a rival to exit. With weak product...

This paper is a first step toward closing the analytical gap in the extensive literature on the results of interactions between public and private R&D expenditures, and their joint effects on the economy. A survey focusing on econometric studies in this area reveals a plethora of sometimes...

This paper analyses market valuations of UK companies using a new data set of their R&D and IP activities (1989-1999). In contrast to previous studies, the analysis is conducted at the sector level, where the sectors are based on the technological classification in Pavitt (1984). The first main...

The UK`s business R&D (BERD) to GDP ratio is low compared to other leading economies, and the ratio has slowly declined over the 1990s. This paper uses data on large UK firms to analyse the link between R&D and productivity over the 1989-2000 period. Using a production function approach, and a...