Using data from the Federal Trade Commission's Line of Business Program and survey measures of technological opportunity and appropriability conditions, this paper finds that overall firm size has a very small, statistically in- significant effect on business unit R & D intensity when either...

We analyze the effect of patenting on R&D with a model linking a firm's R&D effort with its decision to patent, recognizing that R&D and patenting affect one another and are both driven by many of the same factors. Using survey data for the U.S. manufacturing sector, we estimate the increment to...

We examine the impact of individual-level motives upon innovative effort and performance in firms. Drawing from economics and social psychology, we develop a model of the impact of individuals' motives and incentives upon their innovative effort and performance. Using data on over 11,000...