This paper examines theory and evidence from recent studies into the contributions to economic growth of expenditure on education and on research and development. Investment in human capital has fundamentally different economic attributes to physical investment - exhibiting complementarity,...

Two recently improved sets of cross-country panel data are combined in orderto re-examine the effects of population growth and fertility on economicgrowth. Using a 107 country panel data set covering 1960-85, we find thathigh birth rates appear to reduce economic growth through investment...

We present theory and evidence to suggest that, in the context of analyzing global poverty, the EKS approach to estimating purchasing power parities yields more appropriate international comparison of real incomes than the Geary-Khamis approach. Our analysis of the 1996 and 2005 International...

The apparent convergence of OECD income levels since 1950 is subjected to rigorous testing that suggests that there has occurred a systematic process of catching up in levels of total factor productivity. An econometric model of relative economic growth exhibits parameter stability over three...