Working Paper: NBER ID: w3768
Authors: Zvi Griliches
Abstract: 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.
Keywords: R&D Spillovers; Economic Growth; Productivity
JEL Codes: O31; O32
Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.
| Cause | Effect |
|---|---|
| R&D spillovers (O36) | productivity (O49) |
| R&D investments (O32) | R&D spillovers (O36) |
| R&D spillovers (O36) | economic growth (O49) |
| public R&D investments (O32) | social rate of return (H43) |