Imports, exports, knowledge spillovers and growth

Recently, evidence has emerged that knowledge produced through R&D in developed countries can spill over through trade to other countries. The literature has concentrated on imports as the transmission channel. We examine whether exports are also a channel on a panel of 21 countries for 1975-1990. We find that both are sources of knowledge spillovers. (C) 2004 Elsevier BY. All rights reserved.