The word-superiority effect does not require a T-scope.
Six experiments examined the possibility of obtaining a word-superiority effect (WSE) without the use of brief stimulus exposures or a poststimulus mask. In each experiment, subjects were presented a stimulus string and two alternative strings that differed by a single letter (Reicher, 1969). The alternatives and stimulus remained in view until subjects responded, and subjects were under no pressure to respond quickly. In Experiments 1-3, the stimuli were presented in very small type so that they were difficult to see. Subjects were significantly more accurate with words than with nonwords, letters embedded among digits, or letters embedded among number signs (#s). In Experiments 4 and 5, the stimuli were embedded in a simultaneously present pattern mask. Subjects were significantly more accurate with words than with single letters by themselves. In the final experiment, the stimuli were presented in a mask with specific spatial frequency characteristics, and performance was significantly better with words than with nonwords. The WSE is a more general phenomenon than previously supposed; it is not limited to a tachistoscopic exposure.
Prinzmetal
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Department of Psychology, University of California, Berkeley 94720.
D000328:Adult; D001288:Attention; D004193:Discrimination Learning; D004215:Distance Perception; D006801:Humans; D010364:Pattern Recognition, Visual; D010470:Perceptual Masking; D011601:Psychophysics; D011930:Reaction Time; D011932:Reading; D012660:Semantics