We use data on sisters to jointly address heterogeneity bias and endogeneity bias in estimates of wage equations for … are detected only when these two sources of bias are addressed simultaneously. For both white and black women there is … evidence of upward bias in the estimated returns to schooling. Bias-corrected estimates of the effect of marriage on wages, for …

We use data on sisters to jointly address heterogeneity bias and endogeneity bias in estimates of wage equations for … are detected only when these two sources of bias are addressed simultaneously. For both white and black women there is … evidence of upward bias in the estimated returns to schooling. Bias-corrected estimates of the effect of marriage on wages, for …

should affect wages and productivity equally, and hence not bias the test. However, such data are extremely rare, in large …