Knowledge Flows and Innovation∗
نویسنده
چکیده
This paper estimates knowledge flows across regions in Europe and North America as revealed by patent citations. Only if these knowledge flows affect the productivity of researchers in generating new ideas do they generate externalities in innovation. We find that knowledge diffusion is strongly affected by immediate proximity, distance, national borders, linguistic and technological barriers. While some sectors such as Computer Technology are more “globalized” than others, all knowledge flows are much more far-reaching than trade or migration flows. However, once we control for R&D inputs, we do not find evidence that these flows of knowledge have an impact on innovation. JEL Codes: F0, O3, R1
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