Consistent with Biological Sensitivity to Context and Differential Susceptibility hypotheses, this study found that children who, as infants, were more temperamentally reactive were more sensitive to the quality of childcare they experienced as toddlers, but not to the amount of childcare with peers they had experienced since birth. Children with…

The goals of this article were to examine (1) the relative and absolute stability of maternal autonomy support between infancy and preschool age, and (2) the moderating role of child gender, maternal attachment state of mind, and stressful life events. Sixty-nine mother-child dyads participated in five visits when the child was 8, 15, and 18…

Peer interaction is an important component of children's social repertoires that is associated with a variety of developmental outcomes and life skills. The present study provides an in-depth study of early dyadic peer behaviors during the infancy period, during which social competence with peers is first being developed. Results from…

This article reports the results of two experiments studying the effects of type of interaction on infant production of declarative pointing. In Experiment 1, intensity of social presence was manipulated in adult-infant interaction with 12-19-month-olds (no social presence; adult responding only; adult also initiating joint attentional bids).…

Children with behavioral inhibition, a temperamental style characterized by infant distress to novelty and childhood social reticence, exhibit both continuity and discontinuity of this behavioral trait over the course of development. However, few researchers have identified factors that might be responsible for these different patterns. In the…

The purpose of this study was to examine 32 mothers' sensitivity to social contingency during face-to-face interaction with their two- to four-month-old infants in a closed circuit TV set-up. Prosodic qualities and vocal sounds in mother's infant-directed (ID) speech during sequences of live interaction were compared to sequences where expressive…

Examined the relationship between vagal regulation and infant social behavior. Assessed 1-year-olds' social responses toward an unfamiliar adult, then measured their regulation of cardiac vagal tone during a later test of mental development. Results suggest that infants capable of regulating vagal tone have a greater capacity for social…

Proposes that vocal communion between infant and caregiver supports infants' language acquisition and connectedness with caregivers. Recommends research to determine whether social behaviors such as joint attention and vocal imitation are functionally related to language learning or are only symptomatic of a survival-centered caregiving…

Discusses evidence that social understanding informs word learning in infants. Asks: (1) Is genuine social understanding necessary for word learning?; (2) Are social clues criterial for infants' learning?; (3) Can word learning proceed without aid of social understanding?; and (4) Is social clue processing too difficult for everyday word learning?…

Evaluated contributions of birth status (gestational age and birthweight) and family adversity at birth and at age 7 to explain behavior problems at age 7. Found significant relationships between birth status and isolation, social withdrawal problems, social immaturity, and inattention. Family adversity at birth contributed to aggression reported…