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Peer reviewedEdmunds, Alan L. – Canadian Journal of Special Education, 1990
The study of 281 adolescents found no significant differences in creativity subvariables between the developmental stages of concrete and formal operations. Significant relationships were found between age and creativity. Figural flexibility, originality, and elaboration decreased as age increased from 13 to 16 years. (Author/JDD)
Descriptors: Adolescents, Age, Cognitive Development, Creativity
Peer reviewedBradmetz, Joel – Intelligence, 1996
In a study of operative thought in children, 104 children, aged 4 to 9, were tested 5 times with the same 25 Piagetian tasks. There were manifest indicators of synergy in the development of the various behaviors, but it was not possible to validate specific problems of behavior organization. (SLD)
Descriptors: Age Differences, Behavior Patterns, Child Development, Children
Peer reviewedFlieller, Andre – Developmental Psychology, 1999
Administered five Piagetian tests to 180 adolescents for comparison to similar samples from 1967 and 1972. Found that today's adolescents exhibited higher levels of cognitive development than did previous cohorts. Gain varied across tasks, being very large for combinatory thought but mixed for conservation. This acceleration of cognitive…
Descriptors: Adolescents, Cognitive Development, Cohort Analysis, Cross Sectional Studies
