In this paper we revisit both the JTH test of the localization of knowledge spillovers (Jaffe et al. 1993) and its extension by Agrawal et al. (2006). We find that inventors who patent across different companies and geographical locations contribute extensively to the observed citation patterns, both directly (through personal self-citations) and indirectly, by linking the various companies via a social network conducive to more citations. We also find that social networks convey knowledge both to the mobile inventors’ current locations, and to the prior ones. We conclude that spatial distance is just a proxy for social distance, of which the professional ties between inventors are an important component.

The geography of knowledge spillovers: the role of inventors’ mobility across firms and in space

Breschi, Stefano;Lenzi, Camilla;Lissoni, Francesco;Vezzulli, Andrea
2010

Abstract

In this paper we revisit both the JTH test of the localization of knowledge spillovers (Jaffe et al. 1993) and its extension by Agrawal et al. (2006). We find that inventors who patent across different companies and geographical locations contribute extensively to the observed citation patterns, both directly (through personal self-citations) and indirectly, by linking the various companies via a social network conducive to more citations. We also find that social networks convey knowledge both to the mobile inventors’ current locations, and to the prior ones. We conclude that spatial distance is just a proxy for social distance, of which the professional ties between inventors are an important component.
2010
9781847204912
Boschma, Ron; Martin, Ron
The handbook of evolutionary economic geography
Breschi, Stefano; Lenzi, Camilla; Lissoni, Francesco; Vezzulli, Andrea
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11565/817391
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