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Download full textLewis, 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
