Ngai, L. Rachel; Samaniego, Roberto M. - London School of Economics (LSE) - 2008
the extent to which new knowledge builds upon prior knowledge. In contrast, R&D intensity also depends upon the relative … importance of different sources of prior knowledge. Quantitatively, we find that the key factor behind industry differences in … both productivity growth and R&D intensity is the extent to which new knowledge builds upon prior knowledge, regardless of …