Twenty matched mother-infant dyads were studied one, two, and three months after expected date of birth. Full-term infants were more active than pre-terms at four weeks, and their interactions were related to maternal experiences. Mothers of pre-terms showed differences in their interactions at all times. Degree of neonatal illness was correlated…

This study examined the development of aggressive and oppositional behavior among alcoholic and nonalcoholic families using latent growth modeling. The sample consisted of 226 families assessed at 18, 24, 36, and 48 months of child age. Results indicated that children in families with nonalcoholic parents had the lowest levels of aggressive…

This study examined the functions of structured modeling and mother-child play settings upon the development of pretend actions in young Down Syndrome children. Subjects were 30 pairs of Japanese children, with a developmental age range of 12-35 months, and their mothers. The children were individually administered five phases of premodeling,…

To identify any differences in emotional/personality development of a group of infants reared at home and a matched groups of infants enrolled in a day care center, data were obtained on behaviors of two groups of infants. The sample consisted of 15 demographically matched pairs of infants, ages 3-24 months at entrance. Data were collected through…

This paper reviews major research dealing with the effects of infant/toddler day care on the behavior and development of infants, with special emphasis on useful research implications for those concerned with providing high quality group care for infants outside the home. A brief examination of major analytic issues dealing with the problem of…

Previous studies have shown that American mothers, in contrast to Japanese, do more lively chatting to their babies, and that as a result, the American babies have a generally higher level of vocalization and, particularly, they respond with greater amounts of happy vocalization and gross motor activity than do Japanese babies. Thus, it appears…