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O'Malley, John J. – 1972
Review of reversal learning data obtained from Ss of various developmental phases suggested that overtraining increases perseveration in pre-school children, and decrease perseveration in older (e.g., 1st grade) children. The present experiment tested this apparent trend. Children of two age groups (X = 4 yrs., 4 mos., vs. X = 6 yrs., 5 mos.)…
Descriptors: Age Differences, Cognitive Development, Criterion Referenced Tests, Data Analysis
Jensen, Kai – 1968
Simple and complex learning and problem solving situations were employed with mentally retarded children and adults. In the Rotation-Discrimination Complex and the Size-Discrimination Simple experiments, upper and lower test achievement subgroups were subjected to two basic types of visual discrimination at different levels of task complexity.…
Descriptors: Age Differences, Child Development, Cognitive Processes, Conservation (Concept)