We used data from the National Longitudinal Survey of Youth to examine the
effect of various family structures on behavioral and cognitive outcomes fo
r children aged 7 to 10. We extended previous research by using a longitudi
nal definition of family structure and by, exploring multiple mechanisms th
rough which family structure may affect children in 2 outcome domains. We f
ound that family income, mother's psychological functioning, and the qualit
y of the home environment are particularly important for children's behavio
r, whereas family income and mother's aptitude have notable effects on chil
dren's cognitive test scores.