Using the Ainsworth Strange Situation Procedure, a study examined the interrelations between dimensions of emotion and social interactive behaviors to explore the regulatory role of each in mother-infant interaction and how these roles may change in the second year. (HOD)

Studied the sleep state organization and EEG patterns at term date in 53 preterm infants as an index of the maturity and integrity of neurophysiological organization that may have implications for their later development. (HOD)

Study of children aged 21 to 31 months tentatively concludes: (1)behavioral tendency to be inhibited or uninhibited with unfamiliar people or during unfamiliar events is moderately stable across time and context; and (2)moderately negative relationship exists between behavioral inhibition and heart rate variability, and positive relationship…

Twenty-five infants were tested every two weeks on the AB Object Permanence Task, from the time they first reached for a hidden object until they were 12 months old. Results indicate that the AB provides an index of the ability to carry out an intention based on stored information despite a conflicting habitual tendency. (Author/RH)

Results demonstrate that 12 - 15 - week-old male infants smile to nonsocial stimuli, and offers support for the recognition hypothesis of infant smiling. (Authors/MB)

Based on 25 white middle-class infants from 9 to 12 months of age, the earliest manifestation of obedience to appear was a simple disposition to comply with maternal commands and prohibitions, independent of efforts to train or discipline the baby. (Authors/RY)

A total of 87 infants 10 months of age received, either directly or indirectly, a positive nonverbal message, a neutral nonverbal message, or no message about a stranger. Infants, especially those with easy temperaments, were friendlier to the stranger when mothers had spoken positively, but only when the message was directly communicated.…

Human and geometric forms were presented to 12-month-old male infants to determine if infants with a large number of minor physical anomalies would show different habituation than infants with a small number. Differences were found in dishabituation and in response decrement. (Author/RH)

Aims of study were (1) test for independence in infant's attachment to parent, (2) test concept of security by viewing infants judged secure versus insecure with mother in situation designed to arouse apprehension, (3) examine effects of infant-parent relationships upon positive responsiveness to new persons, and (4) identify characteristics of…

The distressed vocalizations of six-month-old infants interacting with peers in a playroom were statistically independent of the peer's vocalizations of distress. Absence of toys reliably predicted the extent of the infant's distress, whereas psychomotor development and sex did not. (Author/ DB)

Examines the issue of object sorting in early infancy. Forty-eight infants at 6, 9, and 12 months were presented with eight sets of small, manipulable objects. At six months, selective manipulation was absent; at nine months, 94 percent of the infants sequentially touched similar objects and at 12 months 100 percent did so. (Author/DB)

Describes the relationship between neonatal crying and anthropometric indices of fetal growth. No differences were found between cry features of underweight and overweight infants; both groups required more stimulation than average weight infants to elicit crying. It is suggested that certain cry features may reflect the risk status of neonates…

Examines the effect of changes in the social and motor capabilities of infants on their daily social encounters. Home observations were made of the social interactions of 14 infants and their mothers when the infants were 6, 8, and 12 months of age. (CM)

Examined the effect of heart rate and behavioral measures of attention on infants' distractibility. Found longer distraction latencies during attentional engagement as defined by heart rate changes or behavior than for inattentive periods. Infants had longest distraction latencies when heart rate and behavior measures both indicated engagement.…