A sex difference in visual influence on heard speech

Number 1426
Year 2006
Drawer 26
Entry Date 04/23/2008
Authors Irwin, J.R., Whalen, D.H. & Fowler, C.A.
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Publication Perception & Psychophysics, V. 68:No. 4, pp. 582-592.
url http://www.haskins.yale.edu/Reprints/HL1426.pdf
Abstract Reports of sex differences in language processing are inconsistent and are thought to vary by task type and difficulty. In two experiments, we investigated a sex difference in visual influence on heard speech (the McGurk effect). First, incongruent consonant-vowel stimuli were presented where the visual portion of the signal was brief (100msec) or full (temporally equivalent to the auditory). Second, to determine whether men and women differed in their ability to extract visual speech information from these brief stimuli, the same stimuli were presented to new participants with an additional visual only (lipread) condition. In both experiments, women showed a significantly greater visual influence on heard speech than did men for the brief visual stimuli. No sex differences for the full stimuli or in the ability to lipread were found. These findings indicate that the more challenging brief visual stimuli elicit sex differences in the processing of audiovisual speech.
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