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Bloomberg, Morton – J Clin Psychol, 1969
Descriptors: Behavior Rating Scales, Cognitive Ability, Cognitive Development, Creativity
Black, Kathryn Norcross; Campbell, Kathleen M. – 1974
This paper describes a study which examined the performance of 48 pairs of 18-month-old twins on the Mental Development Scale of the Bayley Scales of Infant Development to determine whether score differences would be found for the three subgroups of identical, fraternal same-sexed, and fraternal opposite-sexed twins. Of the 96 subjects, 46 (23…
Descriptors: Cognitive Development, Environmental Influences, Infants, Nature Nurture Controversy