Hypnotic color blindness and performance on the Stroop test.
A suggestion for hypnotic color blindness was investigated by administering a reverse Stroop color-naming task. Prior to the suggestion for color blindness, participants learned associations between color names and shapes. Following the color blindness suggestion, participants were required to name the shapes when they appeared in colors that were either congruent or incongruent with the learned associations. The 18 high hypnotizable participants who passed the suggestion were slower to name (a) shapes in which the color name was incongruent with the color in which it was printed, (b) "unseen" rather than "seen" shapes, and (c) color-incongruent shapes that were printed in the color in which they were "color-blind." These patterns are discussed in terms of potential cognitive and social mechanisms that may mediate responses to hypnotic color blindness.
Mallard
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University of New South Wales, Sydney, Australia.
Bryant
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RA
D003117:Color Vision Defects; D006801:Humans; D006990:Hypnosis; D011581:Psychological Tests; D013647:Task Performance and Analysis