Birth-order effects are posited by many to affect earnings and schooling. The authors show how such effects can be interpreted to shift either the earnings possibility frontier for siblings or parental preferences. The authors find empirical evidence for birth- order effects on (age-adjusted)...

The authors show how comparisons between the within-twin correlations of human capital outcomes across identical and nonidentical twins can be used to identify the variability in the individual-specific component of endowments and the responsiveness of schooling to individual-specific endowments...

The authors modify R. A. Fisher's model by incorporating measures on the environment that may be correlated across kin groups. They estimate a model of schooling attainment using data on eight kin groups and find a large contribution of generic endowments to the variance in schooling, though...

Unequal access to financing for education may be an important source of educational differences. The authors develop a model relating sib schooling and earnings similarities to sibship, size with and without equal access, and estimate it for the education of veterans, for whom the GI Bill...

The authors assess the impact of college quality on women's earnings and the influence of family and individual endowments on college choice using new data from a survey of identical and nonidentical twins born in Minnesota. The estimates reject models that ignore school choice. The...