Found that faulty test procedures may explain why infants sometimes locate hidden objects more easily in multiple-well tests than in two-well trials. Also found that errors in seven-well tests were not evenly distributed but occurred disproportionately in the direction of the previously correct well, suggesting that memory and inhibition are both…

Over a 100-day period, 6 children between 9 and 21 months were videotaped interacting with their mothers while the children were learning to walk, eat, and dress themselves. Found that mothers supported dependent behavior before tasks were begun; dependent and independent behavior when children were learning tasks; and neither dependent nor…

Various issues related to positioning infants and children with central nervous system dysfunction in order to conduct videofluoroscopic swallowing function studies are discussed. Extensive illustrations demonstrate solutions to specific problems. (DB)

Memory for object motion in three-month-old infants was investigated across different time intervals in three studies using a novelty preference method. Results indicated a significant preference for the novel motion after a one-minute delay, a significant preference for the familiar motion after a one-month delay, and no preferences at the…

Evaluation of canonical babbling of 13 infants with Down syndrome found that age of onset of babbling was approximately 2 months later and less stable than that of 27 typically developing infants. Age at onset of canonical babbling for Down syndrome infants was correlated with scores at 27 months on the Early Social-Communication Scales.…

Postural sway was measured in 12- to 14-month-old infants and adults while they were standing in the light and dark. Infants did not sway significantly more in the dark than in the light, whereas adults did. These findings indicate that early regulation of standing posture does not depend on visual information. (Author)

Tested 7 and 10 month olds for perception of correlations among facial features. After habituation to faces displaying a pattern of correlation, 10 month olds generalized to a novel face that preserved the pattern of correlation but showed increased attention to a novel face that violated the pattern. (BC)

Observational measures of monozygotic and dizygotic twins' reactions to simulations of distress in others were obtained when the twins were 14 and 20 months old. Components of concern for others increased with age. Girls scored higher than boys on most measures. There was modest evidence for heritability of empathy. (BC)

Recorded electroencephalographic activity of infants and adults who heard 1 unique tone in a series of 10 tones. The amplitude of event-related brain potentials in response to the unique tone was smaller, and its latency longer, for infants than for adults. Evoked potentials remained stable across trials. (BC)

Assessed auditory temporal acuity among infants of 3, 6, and 12 months of age and adults. Gap detection thresholds were quite poor in infants. Effects of restricting the range of frequencies available for detecting gaps were qualitatively similar for infants and adults. (GLR)

Examined infants' ability to locate an invisible target after instrumental and association training. After instrumental training, localization was dependent on visual cues, whereas after association training, it occurred with or without visual cues. Concluded that an updating strategy based on proprioceptive information is operative from the…

Labels for toys were taught to 64 infants. In follow-in labeling, the experimenter labeled a toy at which infants were looking; in discrepant labeling, one at which they were not looking. Results revealed that infants learned follow-in labels and made no mapping errors after discrepant labeling. (BC)

Infants averaging 5 weeks and 12 weeks of age were presented with object models and a live model to determine whether infants reliably responded to the models with movement-matching facial gestures. Object models produced no reliable elicitation of gestures, but the live model increased the incidence of gestures among infants of five weeks. (SH)

In one experiment, most four to eight year olds overattributed knowledge to a preverbal baby who heard an informative message. In a second experiment, six and eight year olds acknowledged differences in babies' and adults' interpretations of a message that was not obviously informative. (BC)

Compared 30 Japanese and 30 American mothers' speech to their 6-, 12-, or 19-month-old infants. Mothers of both cultures used linguistic simplification and repetition. American mothers labeled objects more frequently than did Japanese mothers, whereas Japanese mothers used objects to engage infants in social routines more often than did American…