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Heal, Laird W.; Johnson, John T. – 1968
Retardates, primary students, and college students were given either a reversal or an intradimensional shift after either a criterion of five or twenty correct on a pre-transfer problem. An automated two-choice apparatus projected planometric color and form cues from the rear onto panels that the subject was instructed to press. Both the…
Descriptors: College Students, Discrimination Learning, Handicapped Children, Intelligence Differences