Changes in children's categorization behavior between 15 and 21 months of age and the relation of these changes to developments in language, object permanence, and means-end understanding are reported. (PCB)

Examines the effects of an extra five minutes of interaction on the psychomotor and mental development of Iranian infant orphans largely deprived of opportunities to interact with caretakers and peers. Daily intervention continued for six weeks; effects were assessed after a 6-month interval. (RH)

Investigates ability of nine-month-old infants to imitate simple actions with novel objects. Looks at both immediate and deferred imitation. Findings show that imitation in early infancy can span wide enough delays to be of potential service in social development. (Author/RWB)

Tested infants' understandings of self and mother in the domains of agency and featural knowledge. Four developmentally sequential tasks were administered to infants. It was hypothesized that infants would pass the mother versions of feature tasks before the self versions, and would pass the self versions of agency tasks before the mother…

Addresses the utility of a noninvasive measure of cardiac vagal tone in predicting developmental outcome among infants at risk for cognitive disabilities. Results suggest that measurement of cardiac vagal tone may provide an important means for assessing risk in birth-stressed populations. (Author/RH)

Reviews recent product-oriented outcome studies from the perspective of whether VLBW (very low birthweight) infants born since 1975 (when intensive care methods became relatively stabilized in effectiveness) show behavioral problems, intellectual impairment, linguistic or social deficits. (RWB)

The purpose of this research was to examine 18- to 30-month-old children's use of scripts for representing common events. A script is defined as a model that specifies the roles and props appropriate to an event and identifies a sequence of acts for achieving the goal defined by the event. Two aspects of script knowledge were investigated: (1) the…

Examined the development of pattern recognition in infant pigtailed macaques using the familiarization novelty technique. Results indicate that by at least 200 days postconception subjects show a consistently reliable visual response to novelty. (Author/RH)

The repeated psychological assessment of 41 high-risk infants during the first 2 years of life using the Mental Scale of the Bayley Scales of Infant Development was investigated. Analyses indicated that the infants' cognitive functioning remained fairly stable over the 2 years, particularly from age 6 months on. (Author/JDD)

A sample of 44 infants of five months of age showed a significant reaching preference for the apparently nearer region of a computer-generated display. This indicated that the infants were sensitive to boundary flow information for depth at an edge. (RH)

Findings indicate that infants can detect regularity in spatiotemporal series; will develop expectancies for events in the series; and will act on the basis of those expectancies even when their actions have no effect on the stimulus events. (PCB)

Delay/response inhibition in the presence of an attractive stimulus and compliance with maternal directives in a clean-up task were observed among subjects 18, 24, and 30 months of age. Results suggested (1) achievement of self-control is a major developmental accomplishment, and (2) individual differences in self-control emerge and are…

Investigates the relationship between self-recognition and self-evaluative emotions in two studies on 27 children aged 9-24 months and 44 children aged 22 months. The results of both studies indicate that embarrassment but not wariness was related to self-recognition. (RJC)

Investigated 314 young children who had neonatal hyperbilirubinaemia. Results indicated that these children managed less well in neurological and psychological tests, had poorer school marks, and more often attended special classes than did members of the control group. (RJC)

The Infant Health and Development Program was an eight-site randomized controlled trial of comprehensive early intervention for low birthweight, premature infants from birth to age three. Higher mental development and IQ were associated with high levels of intervention participation at 24 and 36 (but not 12) months. A dose-response relation…