Eighty-one adolescent and young mother-infant dyads have been divided into two groups with/without traumatic experiences in maternal history to examine the effect of maternal traumatic experiences on the quality of mother-infant relationship. At infant 3 months, mother-infant interaction was video-recorded. Results showed that adolescent and young…

From a perceptual learning perspective, infants use social information (like gaze direction) in a similar way as other information in our physical environment (like object movements) to specify action possibilities. In the current study, we assumed that infants are able to learn an affordance upon observing an adult failing to act out that…

This study examined the stability of three patterns of infant regulatory behavior identified in the face-to-face still-face (FFSF) paradigm at 3 and 9 months--social-positive oriented, distressed-inconsolable, and self-comfort oriented--and whether variations in infants' heart-rate were correlated with them. Although some studies have examined the…

Fragmented sleep is common in infancy. Although night awakening is known to decrease with age, in some infants night awakening is more persistent and continues into older ages. However, the influence of fragmented sleep on development is poorly known. In the present study, the longitudinal relationship between fragmented sleep and psychomotor…

Certain social context features (e.g., maternal presence) are known to increase young children's exploration, a key process by which they learn. Yet limited research investigates the role of social context, especially peer presence, in exploration across development. We investigate whether the effect of peer presence on exploration is mediated by…

Infants intentionally communicate with others from before their 1st birthday. But there is some question about how they understand the communicative process. Do they understand that for their request to work the recipient must both understand the request and be cooperatively disposed to fulfill it? On the basis of the study by Shwe and Markman…

Despite the abundance of research on attachment and on the effects of separation, very little research examines the actual processes of separation occurring daily when mothers leave their children (age 6-18 months) in out-of-home group care. In the current study, this everyday process of separation was observed for three months…

Ability of 26 newborns to imitate facial expressions was examined. When infants observed emotional facial expressions, they did not show imitative matching of the modeled expressions. However, when tongue protrusion was modeled, infants did produce the modeled gesture. (PCB)

Examines the validity of the Strange Situation procedure for Japanese mothers and infants by examining correlates and antecedents of Strange Situation behavior for 60 infants and their mothers. Results suggest that the Strange Situation may not be a valid index of the security of infant-mother attachment in Japan. (SLD)

Peer social interaction in the first year of life (8-10 months) was examined with regard to (1) the content of the interaction and (2) the effects of partner familiarity on the interaction. Results show that familiarization positively affects peer social interactions. (Author/MP)

Presents a factor analytic study of the nine New York Longitudinal Study's (NYLS) temperament variables in a sample of 160 Swedish children from six months to two years of age. Asserts that results corroborated some of the NYLS's findings as well as those of other studies. (Author/MJL)

Seven mother/newborn pairs, selected for neurological and obstetric optimality of the babies, were observed during two breastfeedings in order to gain insight into the temporal organization of early interaction between healthy babies and their mothers. (MP)

To investigate the development of symbolic play, 18 Japanese normal boys and girls were individually tested once every even-numbered month from when they were 12 to 24 months of age. Symbolic play was generally defined as behavior which represents actual or imagined experience by using objects, gesture or language alone or in combination. The…

Two studies, labeled A and B, were conducted (1) to investigate relationships between early infant and mother behaviors over situations and over time, (2) to explore relationships between maternal experiences and behavior, (3) to compare infant-mother pairs with and without interaction problems, and (4) to compare infant-mother pairs in which…

Mothers in both countries responded contingently to infant behaviors but differed in type and timing of responses to infants. Concludes that findings have implications for understanding the role of the face-to-face period in human development and the way in which cultural differences in interpersonal communicative style may guide the development…