Spreading the Word: Geography, Policy and Knowledge Spillovers
AbstractUsing new data on citations to university patents and scientific publications, we study how geography affects university knowledge spillovers. Citations to patents decline sharply with distance up to about 150 miles and are strongly constrained by state borders. Distance also constrains citations to scientific publications, but the impact is less sharp and persists over greater distances. The state border effect for publications is significant only for lower quality public universities. We show that the state border effect is heterogeneous, and is strongly influenced by university and state characteristics and policies. It is larger for public universities and those with strong local development policies. The border effect is larger in states with strong non-compete laws that facilitate intrastate labor mobility, states with greater reliance on in-state educated scientists and engineers, and states with lower rates of interstate scientific labor mobility. We also confirm the impact of non-compete statutes by studying a policy reform in Michigan.
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Bibliographic InfoPaper provided by Centre for Economic Performance, LSE in its series CEP Discussion Papers with number dp1005.
Date of creation: Sep 2010
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knowledge spillovers; diffusion; geography; university technology transfer; patents; scientific publications;
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This paper has been announced in the following NEP Reports:
- NEP-ALL-2010-11-13 (All new papers)
- NEP-CSE-2010-11-13 (Economics of Strategic Management)
- NEP-EDU-2010-11-13 (Education)
- NEP-IPR-2010-11-13 (Intellectual Property Rights)
- NEP-URE-2010-11-13 (Urban & Real Estate Economics)
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Adams, James D, 1990. "Fundamental Stocks of Knowledge and Productivity Growth," Journal of Political Economy, University of Chicago Press, vol. 98(4), pages 673-702, August.
- Pierre Azoulay & Joshua S. Graff Zivin & Bhaven N. Sampat, 2011.
"The Diffusion of Scientific Knowledge Across Time and Space: Evidence from Professional Transitions for the Superstars of Medicine,"
NBER Working Papers
16683, National Bureau of Economic Research, Inc.
- Pierre Azoulay & Joshua S. Graff Zivin & Bhaven N. Sampat, 2011. "The Diffusion of Scientific Knowledge across Time and Space: Evidence from Professional Transitions for the Superstars of Medicine," NBER Chapters, in: The Rate and Direction of Inventive Activity Revisited, pages 107-155 National Bureau of Economic Research, Inc.
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