Logo eprints

Knowledge Spillovers through Networks of Scientists

Zacchia, Paolo Knowledge Spillovers through Networks of Scientists. Working Paper (Submitted)

Full text not available from this repository.
Related URLs


In this paper I directly test the hypothesis that interactions between inventors of different firms drive knowledge spillovers. I construct a network of publicly traded companies where each link is a function of the relative proportion of two firms’ inventors who have patent coauthors in both organizations. I use this measure to weigh the impact of R&D performed by each firm on the productivity and innovation outcomes of its neighbors. An empirical concern is that the resulting estimates may reflect unobserved, simultaneous drivers of both R&D and firm performance. I address this problem with an innovative IV strategy, motivated by a game-theoretic model of firm interaction. I instrument the R&D choices of one firm’s neighbors with those of firms that are sufficiently distant in the network. With the resulting spillover estimates, I calculate that the marginal social return of R&D amounts to approximately 24% of the marginal private return.

Item Type: Working Paper (Working Paper)
Uncontrolled Keywords: JEL Codes: C31, D85, O31, O33. Keywords: R&D Spillovers, Coauthorship Networks, Indirect Friends
Subjects: H Social Sciences > HB Economic Theory
Research Area: Economics and Institutional Change
Depositing User: Caterina Tangheroni
Date Deposited: 12 Feb 2016 11:11
Last Modified: 12 Feb 2016 11:11
URI: http://eprints.imtlucca.it/id/eprint/3056

Actions (login required)

Edit Item Edit Item