Although it is possible to statistically estimate the degree to which genetic variation explains observed variation in human behavior, estimates of nongenetic behavior do not set an upper limit on the explanatory power of environmental variation. The two categories are not mutually exclusive: genetic variation often causes environmental variation.…

Findings from a study reported in this paper indicate that the differences in family background that affect IQ are largely the result of genetic differences among parents, which affect the parents' own status attainment and which are passed on genetically to their offspring, whose status attainments are subsequently affected. (Author/EB)

Findings indicate that seventh-grade White adolescent girls who enter a new junior high school are at a disadvantage in terms of self-esteem when compared to boys, in general, and to girls who do not have to change schools. (Author/GC)

Proposes a biosocial model of adolescent sexuality. Examines both sociological and biological factors in the sexual behavior of a sample of 102 male and 99 female urban public high school students. (FMW)

Examines demographic trends relevant to change in gender and parenting roles. Reviews gender differences in parenting in traditional and nontraditional family arrangements. Examines current social explanations of gender differences in parenting, and argues for a model drawing on bio-evolutionary theory and the neurosciences. (CMG)