It is clear that education has an important effect on wages paid in the labour market. It is not clear, however, whether this is due to the role that education plays in raising the productivity of workers (the human capital explanation) or whether education simply reflects the ability of the...

In this Paper we extend the standard human capital earnings function to include dispersion in the rate of return to schooling by treating the return as a random coefficient. One motivation is that if dipping further into the ability distribution has brought about the increase in supply of...

This paper investigates the robustness of recent findings on the effect of parental background on child health. We are particularly concerned with the extent to which their finding that income effects on child health are the result of spurious correlation rather than some causal mechanism. A...