Lytton responds to two critical commentaries in this issue by restating the reasons why it is useful to try to disentangle child effects from parent effects. Argues that 10 convergent lines of research provide evidence that the child's tendencies are stronger contributors to conduct disorder than are parental influences. (RH)

This data compared language complexity measures, birth information, and family data for twins and singletons of the same sex, age, and socio-economic status. The subjects were four pairs of male twins, four pairs of female twins, four pairs of opposite sex twins, and 24 singletons, 32-33 months of age. Samples of each child's spontaneous…

Examines perspectives on family influences on child development. Maintains that genetic and biological factors and parental actions/attitudes make important contributions to individual differences. Draws on research on gender differences and conduct disorders to illustrate that parental influence on individual differences within cultures has been…