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…

Examines the capability and motivation of 18- and 24-month-old infants to share, help, comfort, and cooperate with their older siblings; the frequency of such prosocial behavior by both siblings; and the children's response to sibling distress. The relationship between prosocial and conflict behavior was also studied. (HOD)

Reviews the major transitional object (TO) theories in terms of origin, development, and psychological meaning. Examines the validity of TO (intense, persistent attachments young children develop for blankets, soft toys, and bits of cloth) theory in light of current empirical knowledge of TO behavior. (HOD)

Analyzes relationships between directly observed infant and mother behavior and infant temperament characteristics, as described in maternal ratings; separates the effects of different variance components in prediction of the observed behaviors; and explores possible interactions between infant sex and infant temperament in determining both infant…

Offers selective reviews on adult outcomes of severe mental retardation, autism, conduct disorders, mild retardation and adjustment disorders of childhood. Discusses important prospective study of mild retardation. Stresses that adjustment disorders of childhood only rarely continue into adult life; but incidence of these disorders is on the…

Observes parents' socialization practices in 24 homes of families with first-born infants at 11, 14, and 17 months of age. Four kinds of socializing practices were observed and compared by parents' sex, infants' age, and infants' sex. (HOD)

Investigates the belief that caregivers' sensitive and contingent behavior is closely related to children's perceived control by analyzing the interactions between mothers and their 3 1/2- to 4 1/2-year-old children during a problem-solving task. (HOD)

Examines professional education and current research trends in developmental psychology in Italy. Current trends have been investigated by a multi-dimensional content analysis of the studies published or accepted for publication in qualified journals between 1978-May 1983. (Author/AS)

Reviews recent product-oriented outcome studies from the perspective of whether VLBW (very low birthweight) infants born since 1975 (when intensive care methods became relatively stabilized in effectiveness) show behavioral problems, intellectual impairment, linguistic or social deficits. (RWB)