Most growth theorists agree that understanding the economics of innovation and technological change is central to understanding why some countries are richer and/or grow faster than other countries. The driving force behind recent developments in endogenous innovation models of growth is a...

The endogenous innovation research program is one of the most important theoretical agendas in modern growth theory. Progress, however, has been slowed due to an apparent empirical anomaly. In their simplest and most appealing forms the models suggest a scale effect that seems inconsistent with...