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Beschreibung:
We analyze the impact of international R&D spillovers on recipient countries in terms of social and private returns. We divide the aggregate R&D stock by the business, government and education sectors and examine the impact on Total Factor Productivity. We endogenize the accrual of the R&D stocks by estimating an R&D investment function. We find that the marginal social returns on R&D are much larger than the marginal private returns for R&D-intensive countries. It implies that R&D intensive countries are expected to generate more spillovers at the margin, but the observed R&D stock is smaller than the socially optimal level.