Adult influences on infant peer interaction were examined to determine whether infants would be more likely to sustain interaction with one another when their mothers were encouraging them to do so than they would when their mothers were busy with something else. A total of 36 infants, 14 months of age, were videotaped during 30-minute play…

In a study of infant smiling, 20 mother-infant dyads were videotaped in normal face-to-face interaction when the infants were 9 and 14 weeks of age. Videotapes were used to determine which of two classes of smiling behavior models, either arousal modulation or activation indicator, was most supported by empirical data. Arousal modulation models…

The major purpose of this study was to examine bimodal coordination of featural stimuli in infancy. Specifically of interest was infant sensitivity to the auditory and visual combinations that characterize male and female stimulus configurations. A total of 27 male and 27 female subjects of 3, 6, and 9 months of age participated in the study.…

Investigates the ability of 2-year-old children to pretend that one thing is another. Results indicate that when one thing is substituted for another, pretending varies as a function of the number of substitutions. (LLK)

Investigated the possibility that evidence of frequency discrimination might be found when the experimental procedures involved the conjugate reinforcement of nonnutritive sucking. (SDH)

The underlying theme of this review is that fine motor assessment for skills acquired during the first year of life includes a description of the coordination of reach and grasp behaviors into functional understanding, purposeful retention of an object, and manipulatian. The developmental sequence of these responses is listed in various…

Multiple regression analyses using maternal attitudes during pregnancy, obstetric analgesic medication, and labor variables as predictors did not yield impressive relationships to neonatal behavior as measured two days after delivery. (JMB)

Fifty 4-month-old infants were habituated to one wavelength of light and then tested for recognition with the original and two new spectral lights. After short- and long-term delays with different types of retroactive interference, the results indicated that the infants' recognition memory for hue was quite resilient to interference or delay. (JMB)

Attempts to clarify the meaning of differentiation in the Piagetian concept of object permanence. (BD)

The relationship between visual stimulus intensity and finger movements was examined in infants ranging in age from 10 to 15 weeks and from 20 to 25 weeks. Infants were shown a cone that varied in size, brightness, and distance from them. (Author/JMB)

This study tested the hypothesis that one year old infants' wary behavior toward an unfamiliar female adult would decrease and affiliative behavior would significantly increase in the course of a relatively brief period. (Author/SB)

Experimental social histories were created for 22 6-month-old infants by providing structured interactions with three different adults (a distal interactor, a proximal interactor, and a neutral interactor) over a three-week period. Infants' social preferences (looking and approaching) for each of the interactors were then compared. (Author/JMB)

A factor analysis was performed on the behavioral items of the Brazelton Neonatal Assessment Scale for an urban population of 328 newborns. (Author/JMB)

Investigated in three studies were responses of 18- and 24-month-old children to a series of commands. Results suggest that a potent incentive for obeying commands lies in the pleasure very young children take in fitting their actions to the words of others. This pleasure sustains subsequent reenactment of the actions without commands. (Author/RH)