Are There International R&D Spillovers Among Randomly Matched Trade Partners? A Response to Keller

Keller (1998) reexamines Coe and Helpman's (1995) analysis of international R&D spillovers focusing on the weights used to define the foreign R&D capital stock. Keller creates "random" weights and shows that they give rise to positive estimates of international R&D spillov...

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Bibliographic Details
Main Author: Coe, David
Other Authors: Hoffmaister, Willy
Format: eBook
Language:English
Published: Washington, D.C. International Monetary Fund 1999
Series:IMF Working Papers
Subjects:
Online Access:
Collection: International Monetary Fund - Collection details see MPG.ReNa
Description
Summary:Keller (1998) reexamines Coe and Helpman's (1995) analysis of international R&D spillovers focusing on the weights used to define the foreign R&D capital stock. Keller creates "random" weights and shows that they give rise to positive estimates of international R&D spillovers, casting doubts on the robustness of Coe and Helpman's findings. We show that Keller's "random" weights are essentially simple averages with a random error. We derive alternative random weights and present regressions showing that when they are used to define the foreign R&D capital stock, the estimated international R&D spillover estimates are nonexistent, as would be expected
Physical Description:21 pages
ISBN:9781451843620