We provide theoretical and empirical evidence on the factors that influence the willingness of academic scientists to share research results. We distinguish between two types of sharing, specific sharing in which a researcher shares her data or materials with another and general sharing in which...

We provide theoretical and empirical evidence on the factors that influence the willingness of academic scientists to share research results. We distinguish between two types of sharing, specific sharing in which a researcher shares her data or materials with another and general sharing in which...

I develop and test a model of strategic R&D investments where innovating and non-innovating firms compete on the basis of their ability to reduce costs and imitate rivals. I find that a larger proportion of non-innovating rivals stimulates cost-reducing investments and attenuates the...

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...