productivity are interconnected. First we discuss two approaches in the human capital theory, stressing some difficulties that … the frequently obtained conclusion that investments in higher education are too low are doubtful. The tests also show the … importance of further education and training, especially on-the-job training. …

Human capital plays an important role in the theory of economic growth, but it has been difficult to measure this …

have positive impacts on young women's wages. We find evidence of ability sorting, but controlling for ability, women who … attend higher quality colleges earn higher wages. Women receive smaller gains from college quality than do men; black women … earn more than those who attend public colleges, and women earn lower wages, the higher the proportion of their college …

have substantial positive impacts on young men's wages. This finding is robust to a wide array of alternative …

the agencies' activities. One solution to this problem is for an agency to employ altruistic workers at below-market wages …