A model of the 'new growth theory' type is applied to the persistence of racial income differentials in the presence of community segregation. When community human capital affects human capital accumulation by individuals, differences between groups can persist indefinitely, even in the absence...

The authors develop an empirical model of adolescent premarital childbearing in which a woman's decisions affect a sequence of outcomes: premarital pregnancy, pregnancy resolution, and the occurrence of marriage before the birth. State welfare, abortion, and family planning policies alter the...

I examine the effects of cognitive ability and personality traits on college graduation in a recent cohort of young Americans, and how the returns to these traits vary by family background, and find very substantial differences across family background groups in the personality traits that...