Studies of firm-level data have shown that a firm's R&D and the R&D of other firms increase conventional factor productivity. We investigate these phenomena further by examining the relationship between plant-level productivity and firm-level R&D. We find that (1) the productivity-e...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Adams, James D. (VerfasserIn), Jaffe, Adam B. (VerfasserIn)
Format:	Buch
Sprache:	English
Veröffentlicht:	Cambridge, Mass. 1996
Schriftenreihe:	National Bureau of Economic Research <Cambridge, Mass.>: NBER working paper series 5544
Schlagworte:	Ökonometrisches Modell Industrial productivity > Econometric models Research
Online-Zugang:	Volltext
Zusammenfassung:	Studies of firm-level data have shown that a firm's R&D and the R&D of other firms increase conventional factor productivity. We investigate these phenomena further by examining the relationship between plant-level productivity and firm-level R&D. We find that (1) the productivity-enhancing effects of parent firm R&D are diminished by geographic distance from the research lab and t̀echnological' distance between the product-field focus of the R&D and the plants; (2) productivity appears to depend on the intensity of parent firm R&D (R&D per plant), not on the total amount; and (3) spillovers of research effects from technologically related firms are significant but also depend on R&D intensity rather than total industry R&D. These results suggest that, despite the externalities created by spillovers of R&D, the d̀ilution' of R&D across multiple target plants reduces its potency sufficiently that spillovers may not be a source of industry-wide or economy-wide increasing returns.
Beschreibung:	39 S.