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Lewis, Michael; Wilson, Cornelia D. – 1971
This study was conducted to observe the effects of social class on the interaction of mothers and their 12-week-old infants. Data on the infants' cognitive and attentive behavior was also obtained. Each of 32 white and black infants from five different levels of social class was observed at home for two full hours of waking time. Observed infant…
Descriptors: Behavior Patterns, Black Mothers, Blacks, Child Rearing
Lewis, Michael; Gallas, Howard – 1976
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…
Descriptors: Birth Order, Cognitive Development, Cognitive Measurement, Infant Behavior
Lewis, Michael; Goldberg, Susan – 1968
Twenty infants, 12 weeks of age, were subjects in an experiment to test the effects of maternal behavior on their perceptual-cognitive development. Each mother and child were observed in a controlled naturalistic setting, every 10 seconds their various behaviors were recorded, and then the mother was interviewed. During an experimental session the…
Descriptors: Behavior Development, Behavior Theories, Cognitive Development, Infant Behavior
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