ABSTRACT
This chapter presents the empirical results for all the models that were estimated. It discusses the regression results regarding the regional high-tech employment effects of dynamic externalities. The chapter considers the differences in these impacts by firm size, organizational type, and product. It also discusses the regression results regarding the effects of initial high-tech employment on regional growth of employed civilian labor force. Diversity for high-tech industry is assumed to depend on the initial employment level and growth of manufacturing industries, as well as on those of high-tech industry. As in cross-sectional analysis, specialization and diversity are assumed to depend on total high-tech employment and persistence of high-tech employment, controlling for regional variables and dummies. Unlike the cross-sectional analysis, yearly differences of manufacturing wages are included as control variables. High-tech concentrations grew rapidly in large metropolitan regions. The coefficient for the specialization variable is statistically significant and quantitatively large.
