Psychological predictors of self-concept, behavior problems, and social competence of 55 siblings of developmentally disabled children were compared with those in 55 siblings of nondisabled children. Distinct psychological predictors for children with developmentally disabled siblings included parental stress and resources, perceived family social…

An interactional model explaining predisposition to hyperactivity asserts that being identified, diagnosed, and treated as hyperactive is a function of biological factors, early health and temperament, family characteristics, and the quality of the home environment. A longitudinal study involving 367 subjects, aged 17-18, tested the interactional…