The Twins and Siblings study is available in a machine-readable data file that is part of the High School and Beyond (HSB) Class of 1980 Survey, administered in 1980 to a national sample of over 30,000 sophomores and 28,000 seniors from 1,015 high schools throughout the United States. This file contains data from 616 sampled twins and triplets…

Directed to parents, the text discusses normal and delayed speech development and considers the causes of delay. Suggestions are given for helping deaf, emotionally disturbed, brain damaged, and physically handicapped children. Additional suggestions are provided for parents of twins, of stutterers, and of mongoloid or multiply handicapped…

Conceived around the notion that there are multiple sources of influence on children's development, this volume describes when, where, and how parenting matters and the major antecedents and moderators of effective parenting. The chapters of the volume are as follows: (1) "Beyond the Nurture Assumption: Testing Hypotheses about the Child's…

Background: It is not known if the prevalence of parental psychiatric disorders is higher in stepfather than intact families, or if parental alcoholism is differentially associated with risk for conduct disorder (CD) symptoms in stepfather families versus intact families. Method: The sample comprised 839 girls and 741 boys from 792 intact families…