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Peer reviewedChletsos, Peter N.; And Others – Journal of Research and Development in Education, 1989
This article presents evidence of the reliability and validity of a new paper-and-pencil test of proportional reasoning, Paper-and-Pencil Balance Beam Test. A Total of 627 individuals, aged 8-47, participated in the 3 studies discussed. Results support previous research which correlates performance on proportional reasoning problems with…
Descriptors: Age Differences, Cognitive Development, Elementary Secondary Education, Formal Operations
Download full textQuereshi, M. Y. – 1971
The present study was designed to (1) investigate the changes in the structure and organization of mental abilities during childhood and adolescence of 514 students as sampled by the Wechsler Intelligence Scale for Children (5 to 15 years) and the Wechsler Adult Intelligence Scale (16 to 18 Years) and (2) interpret, and possibly modify, the…
Descriptors: Adolescents, Children, Cognitive Ability, Cognitive Development
