Knowledge Flows and Knowledge Externalities
46 Pages Posted: 31 Oct 2002
Date Written: August 2002
Abstract
The diffusion of knowledge in the world generates positive externalities if knowledge flows increase the productivity of R&D. Our work analyzes knowledge diffusion and knowledge externalities in generating innovation and in determining productivity. We first estimate the determinants of knowledge flows across 141 sub-national regions in 19 countries of Europe and North America as revealed by patent citation between US-granted patents. Then we estimate the impact of these flows on productivity of R&D resources in generating innovation (patenting) and productivity (TFP). While we find that knowledge diffusion depends on geographical and technological distance and is well described by a pseudo-gravity model, we do not find evidence of significant positive externalities from existing knowledge.
Keywords: Knowledge Flows, Innovation, Patent Citations Regions
JEL Classification: F0, O3, R1
Suggested Citation: Suggested Citation
Do you have negative results from your research you’d like to share?
Recommended Papers
-
By David T. Coe and Elhanan Helpman
-
By David T. Coe
-
International R&D Spillovers and Institutions
By David T. Coe, Elhanan Helpman, ...
-
International R&D Spillovers and Institutions
By David T. Coe, Elhanan Helpman, ...
-
International R&D Spillovers and Institutions
By David T. Coe, Elhanan Helpman, ...
-
Are There International R&D Spillovers Among Randomly Matched Trade Partners?: A Response to Keller
-
By David T. Coe, Elhanan Helpman, ...