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Visual Illusion Cards
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Prepared by professors of psychology in the Gestalt tradition, Dr. J. Block and Dr. H. Yuker of Hofstra University. Contains 52 different visual illusions and instructions. Examples: illusions in color, color reversal, ambiguous figures, size and figure distortion. Card size 3-1/2" L x 2-1/2" W. Two different sets available.
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