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Peer reviewedSevcik, Rose A.; Romski, Mary Ann – Augmentative and Alternative Communication, 1986
Eight severely retarded subjects (ages 9-22), four with functional language and four without, performed identity and nonidentity matching tasks employing objects, photographs, and line drawings. As representational complexity increased, greater difficulty in matching stimuli was observed in the nonfunctional language group, with line drawings…
Descriptors: Cognitive Processes, Concept Formation, Discrimination Learning, Elementary Secondary Education
