Ontogenetic Changes in Two Forms of the Muller-Lyer Illusion in Normal and Retarded Subjects.

Johnson, Clark; Jackson, Ernest G.

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Peer reviewed

ERIC Number: EJ109759

Record Type: Journal

Publication Date: 1974

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Ontogenetic Changes in Two Forms of the Muller-Lyer Illusion in Normal and Retarded Subjects

Johnson, Clark; Jackson, Ernest G.

Developmental Psychology, 10, 6, 949-953, Nov 74

Both forms of the Muller-Lyer illusion were presented to the normal and retarded subjects to determine possible changes in illusion strength in either or both forms of the illusion when age, amount of repetition, and IQ were varied. (Author/ED)

Descriptors: Age Differences, Cognitive Development, Elementary School Students, Handicapped Children, High School Students, Intelligence Quotient, Mental Retardation, Perception

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