Perceptual versus postperceptual mediation of visual context effects: evidence from the letter-superiority effect.
Two experiments demonstrated letter-context effects that cannot easily be accounted for by postperceptual theories based on structural redundancy, figural goodness, or memory advantage. In Experiment 1, subjects identified the color of a letter fragment more accurately in letter than in nonletter contexts. In Experiment 2, subjects identified the feature presented in a precued color more accurately in letters than in nonletters. We argue that these effects result from top-down perceptual processing.
Reingold
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EM
Department of Psychology, University of Toronto, Erindale College, Mississauga, Ontario, Canada.
Jolicoeur
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P
D000328:Adult; D001288:Attention; D003118:Color Perception; D004193:Discrimination Learning; D005260:Female; D005364:Field Dependence-Independence; D006801:Humans; D008297:Male; D009949:Orientation; D010364:Pattern Recognition, Visual; D010470:Perceptual Masking; D011601:Psychophysics