The quality of education in many poor countries, particularly in Africa, diminished over time. Years of schooling obviously doesn't tell you which is what we often have in a data set. And I think it's just a better measure of human capital, ones based on test scores. We also know that something about health seem actually to have more explanatory power for subsequent growth than the ones that we have about education.
Russ Roberts interviews Robert Barro, Harvard University Professor and Hoover Institution Senior Fellow, on the economics of growth, what the developed world can do to help poor people around the world, and the role of US assets and the dollar in world finance.