competition through increased imports can lead to market share reallocations among domestic firms with different productivity … (spillovers). Each of these channels may have a major impact on aggregate productivity. This paper presents comparative evidence … productivity is close to zero. If the scope for technological learning is limited, the selection effect dominates and imports lead …

We examine the dynamics of ideas production and knowledge-productivity relationship in a panel of 19 OECD countries. A …&D but little support for endogenous growth. Countries with low domestic ideas bases could considerably improve productivity …