"Foreign direct investment (FDI) has dramatically increased worldwide and is the most important form of all private capital flows to developing countries. Yet, it is an important empirical question whether FDI affects total factor productivity (TFP) positively. We investigate the effect of FDI on TFP growth in a large sample of countries in 1970-2000. Our econometric results indicate that FDI has a positive and direct effect on TFP growth. However, we do not find any evidence that the impact of FDI on TFP growth is only conditional on the recipient country's capability to absorb foreign technology. We carefully address the robustness of the empirical results". ("JEL "O11, O40, O47, F21) Copyright (c) 2008 Western Economic Association International.