This paper discusses the impact of oligopolistic product markets for innovation and growth, highlighting a novel, fundamental role of spillovers. We develop a model of endogenous growth with non-tournament R&D, where spillovers raise the relative R&D efficiency of laggards. A key feature is that...

This paper explores the hypothesis that changes in trading patterns and partners of US industries have contributed to skill deepening through defensive, skill-biased innovation. It draws on Thoenig and Verdier's (2003) assertion that, since skill-intensive technologies are less likely to be...