We examine differences in the efficiency of UK universities in providing research and teaching. It appears that (i) universities are more efficient in providing teaching than research, (ii) the variation of efficiency is larger in research than in teaching, and (iii) the degree of (in)efficiency...

College graduates tend to earn more than non-graduates but it is difficult to ascertain how much of this empirical association between wages and college degree is due to the causal effect of a college degree and how much is due to unobserved factors that influence both wages and education (e.g....