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

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 toanalyse the link between R&D and productivity over the 1989-2000 period. Using aproduction function approach, and a...

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

The growth process for a technological leader is different from that of a follower.While followers can grow through imitation and capital deepening, a leader must undertakeoriginal research. This suggests that as the gap between the leader and the follower narrows, thefollower must undertake...