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Download full textWillis, Sherry L.; Baltes, Paul B. – 1980
Two studies examined modifiability in intellectual functioning in older adults. The fluid-crystallized theory provided a theory base for the research. (Fluid intelligence follows a normative decline through adulthood, while crystallized intelligence remains stable or even increases.) In the first study thirty subjects (average age 69.2)…
Descriptors: Adult Development, Adult Education, Cognitive Ability, Cognitive Development
Jordan, Valerie Barnes; Jordan, Lawrence A. – 1975
This paper reviews studies in which scores on Piagetian tests of logical thought were correlated with IQ, mental age (MA) and chronological age (CA), and examines the possible effects of the size of the age range and mean age of subjects on these correlations. The data included 44 groups of subjects obtained from 36 studies in which Piagetian and…
Descriptors: Age, Age Differences, Cognitive Development, Cognitive Measurement
Crowther, E. M. – CORE: Collected Original Resources in Education, 1978
Adolescents, ages 11-12 and 13-14, were tested for maturity of judgment about stability-change situations and about time perspective. (CP)
Descriptors: Adolescents, Age Differences, Cognitive Development, Cognitive Processes
