Examined maternal and infant behaviors, behavioral coordination, maternal response, and nonresponse in relation to security of attachment. Subjects were 40 Euro-American mothers and 39 Central American immigrant mothers studied when their infants were 4-, 8-, and 12-months-old. Found that individual differences on measures of maternal response and…

Explored relation between infants' early spontaneous imitation of novel and familiar words and subsequent lexicons in longitudinal sample between 13 and 21 months. Found marked contrasts in quantity and proportions of nouns between reported and observed lexicons. When earlier vocabulary levels were controlled, infants' early replication of novel…

Assessed infants' attachment behaviors toward nonparental adults, including grandparents, other relatives, and family friends. Found that the extent of infants' attachment behavior to nonparental adults was related to infant-mother attachment behavior and to the nonparental adult's responsiveness in teaching and position in the mother's social…

Reviews literature on children up to age one to determine whether heart rate (HR) is a reliable, stable, and valid measure. Considers factors influencing resting HR and the Law of Initial Values, discusses information about response to stimulation and infant perception and affect obtained by using HR measures, and describes HR use in risk…

Explored infants' responses to live and replay interactions with mothers and their own images. Found that to their mothers, infants decreased attention, length of first gazes, and smiling from initial live feedback to replay, and that responses to subsequent live feedback generally remained suppressed. Also found that infants did not show a…

Reviews six books on child cognitive and emotional development. The books address the following topics: the assessment of cognitive competence; children's theories of mind; early grammatical development; the psychological consequences of parental belief systems for children; the role of culture in human development; and perspectives from…

Explores differences in temperament of preterm and full-term infants at three and six months of age. Preterm infants were generally rated more difficult than full-term infants at both ages. All infants were generally rated less difficult at six than at three months. (Author/BB)

Studied the imitation behavior of thirty 14- to 18-month-olds using peer and adult models in an elicited imitation paradigm. Indicated significant memory for 3-step behavior sequences both immediately after modeling and 1 week later compared with baseline performance. Found that children in the peer model group outperformed children in the adult…

Investigated emotional and facial expressivity in infants who failed to thrive and normal infants who were videotaped in social and cognitive contexts. Although differences in emotional expressivity were not found, infants who failed to thrive displayed more negative effects and used their lower faces less often to express emotion. (Author/BB)