Twins-based estimates of the return to schooling have featured prominently in the economics of education literature … monozygotic twins, that the twins-based estimated return to schooling falls if adolescent IQ test scores are included in the wage … doubt on the validity of twins-based estimates. …

Twins-based estimates of the return to schooling feature prominently in the labor economics literature. The validity of … unique dataset of monozygotic twins, strong evidence against it. Differences in adolescent IQ test scores predict within …

dizygotic twins. In these cases, the two children are born at the same time, so parents cannot make decisions about one twin …

twins. With annual pre-tax income as our measure of income, we find that the naïve (OLS) returns to an additional year of … schooling laws as an IV produces a 12% rate of return. Finally, we review estimates from twins studies. While we estimate a … and schooling in our dataset. Australian twins studies are consistent with our findings insofar as they find little …

We use a new sample of UK female identical twins to estimate private economic returns to education. We report findings … in three areas. First, we use identical twins, to control for family effects and genetic ability bias, and the education … findings suggest lower ability bias in within-twin pair regressions than pooled regressions. Third, using data on twins smoking …

We use a new sample of UK female identical twins to estimate private economic returns to education. We report findings … in three areas. First, we use identical twins, to control for family effects and genetic ability bias, and the education … findings suggest lower ability bias in within-twin pair regressions than pooled regressions. Third, using data on twins smoking …