This study investigates the effects of age and prior experience with age-mates on attachment behavior and exploratory play with another child. Twenty home-reared children, half between 18 and 24 months and half between 24 and 30 months, and 20 day care children, also equally divided into the two age groups, were observed in the Ainsworth strange…

This longitudinal study investigated the relationship of stress arising from medical problems of newborns to parent-infant interaction through the infant's first year. Significant interactive differences between full term and premature infants were found in feeding situations during the neonatal period and in floor play at eight months. The sample…

This paper describes the results of a longitudinal study which compared the effects of three types of home-based, parent-oriented, infant education curricula. One curriculum stressed language, another stressed play, and a third stressed social development. Mothers and children from 108 middle and working class families received home visits…