Examines the interplay between genes and environment and argues that the development of much individual variation can be explained in terms of relatively simple forms of underlying regulation. Looks at "sensitive periods," during which variation is produced by experience received at a particular age. Includes a discussion of the…

A path model of genetic and shared family environmental transmission was fitted to general cognitive ability data from 1-, 2-, 3-, and 4-year-old adopted and nonadopted children and their parents to assess the etiology of longitudinal stability from infancy to early childhood. (HOD)

Reports on a study of the determinism-free will debate presented in 15 textbooks published between 1956-1965 and 38 texts published between 1983-1992. Finds that most textbooks still favor a deterministic position. Issues a call to sociology teachers to reflect carefully about the way the choice debate is depicted. (CFR)

Examines whether there are sex differences during middle childhood in children's choices to participate in activities differing in level of adult-provided structure; effects of structure on children's compliance, leadership, and recognition seeking directed to adults and to peers; and relation of sex-typed social skills or dispositions and…

For the individual, gender difference falls along the feminine-masculine continuum with strong neurodevelopmental influences at various points throughout the lifespan. Neurodevelopmental influences are conceptualized in a vector model of sex difference. Vector attributes, direction and magnitude, are influenced initially by differences in levels…