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| Boswell, James D. | 1 |
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| Knafle, June D. | 1 |
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Peer reviewedSinson, Janice C.; Wetherick, N. E. – Journal of Mental Deficiency Research, 1976
Descriptors: Age Differences, Color, Discrimination Learning, Downs Syndrome
Peer reviewedGeiger, Susan Lee; Greenberg, Bonita Renee – Language, Speech, and Hearing Services in Schools, 1976
Descriptors: Age Differences, Blacks, Children, Dialects
Download full textBoswell, James D. – 1969
The interrelations between mental age (MA), IQ, and mediation were studied in 72 retardates in special classes. Subjects were selected to fall into sexually balanced groups of six in 12 MA-IQ categories (IQ 50-59, 60-69, 70-79, and 80-89; MA 4-0 to 5-11, 6-0 to 7-11, and 8-0 to 9-11). The apparatus alternately displayed two pairs of stimuli, and…
Descriptors: Age Differences, Discrimination Learning, Exceptional Child Research, Intelligence Differences
Peer reviewedKnafle, June D. – Journal of Speech and Hearing Research, 1974
Descriptors: Age Differences, Auditory Perception, Auditory Stimuli, Discrimination Learning
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)
