We develop a tractable model of endogenous growth that emphasises learning and the relevance of assimilated knowledge (as opposed to frontier knowledge) in research. The model is able to limit the scope of (level) scale effects, without degenerating into a model of "semi-endogenous" growth. We...

The role of public capital in economic growth is examined using data from the Penn World Tables and other sources on a large number of countries. Drawing on intertemporal optimization, the theoretical framework nests the exogenous (Solow) and endogenous types of growth and is data-consistent. It...