This study examines the effects of a human capital-based measure of technology diversification on innovation output and … market structure across 239 U.S. manufacturing industries. Technology diversification is measured using data on the … occupational diversification of an industry’s engineering employment, unlike other studies that have used measures based on patent …

change. The book explores the changing nature of this diversification with respect to firm size, technological relatedness …-purpose technologies. Although historically, diversification is associated with an increase in firm size, the author argues that in recent …