This paper revisits the results of Bloom, Schankerman, and Van Reenen (2013) on the impact of R&D spillovers on growth. We extend their analysis to include an additional 15 years of data on firm R&D and performance, and update the measures of firms' interactions in technology space and product...

We simultaneously assess the contributions to productivity of three sources of research and development spillovers: geographic, technology and product-market proximity. To do this, we construct a new measure of geographic proximity that is based on the distribution of a firm's inventor locations...

This paper revisits the results of Bloom, Schankerman, and Van Reenen (2013) examining the impact of R&D on the performance of US firms, especially through spillovers. We extend their analysis to include an additional 15 years of data through 2015, and update the measures of firms' interactions...