This study explored the relationship between the mother-infant interaction and the concurrent perceptual-cognitive and intellectual status of the infant. One hundred and eight-nine 12-week-old infants were given a battery of perceptual-cognitive tasks, including the Mental Developmental Index (MDI) of the Bayley Scales, the Corman-Escalona Scales…

The early communication network existing between a mother and her 12-week-old infant was explored. Over 50 infants of both sexes from a variety of social classes were seen in their homes, and a wide variety of maternal and infant behaviors were studied. Of special interest was the vocalization-in-communication data. The results indicate a lawful,…

This study examines the effects of sex, socioeconomic status, birth order and birth spacing on the cognitive performance of 12-week-old infants. A brief review of research on neonatal cognitive ability is followed by a description of the study itself. The subjects, 189 three-month-old Caucasian infants (61 first borns, 58 second borns, and 49…