TY  - JOUR
AU  - Griliches, Zvi
TI  - The Search for R&D Spillovers
JF  - National Bureau of Economic Research Working Paper Series
VL  - No. 3768
PY  - 1991
Y2  - July 1991
DO  - 10.3386/w3768
UR  - http://www.nber.org/papers/w3768
L1  - http://www.nber.org/papers/w3768.pdf
N1  - Author contact info:
Zvi Griliches
E-Mail: N/A user is deceased
M1  - published as Zvi Griliches. "The Search for R&D Spillovers," in "R&D and Productivity: The Econometric Evidence" University of Chicago Press (1998)

AB  - R&D spillovers are, potentially, a major source of endogenous growth in various recent "New Growth Theory" models. This paper reviews the basic model of R&D spillovers and then focuses on the empirical evidence for their existence and magnitude. It reviews the older empirical literature with special attention to the econometric difficulties of actually coming up with convincing evidence on this topic. Taken individually,, many of the studies are flawed and subject to a variety of reservations, but the overall impression remains that R&D spillovers are both prevalent and important.
ER  -