Haskins Publications

Number	236
Year	1978
Drawer	4
Entry Date	06/03/1999
Authors	Repp, B. H.
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Publication	Brain and Language, 5, 310-330.
url	http://www.haskins.yale.edu/Reprints/HL0236.pdf
Abstract	Conducted 2 studies to determine the effect of variations in voice onset time (VOT) on the perception of dichotic stop-consonant-vowel syllables contrasting in the voicing feature. The dichotic stimuli were partially fused, so that only a single response was required. Subjects included (a) a total of 15 undergraduates with varying degrees of experience with dichotic listening and synthetic speech, and (b) the author and a colleague, both of whom were highly experienced listeners. Results show that variations in VOT had a systematic effect on the probability of hearing the fused stimuli as voiced or voiceless. Changing the VOT of a voiceless stimulus had a larger effect than changing the VOT of a voiced stimulus. Unless 1 of the competing stimuli was close to the category boundary, the perceptual integration of their VOTs seemed to be roughly additive. The relative phase of the periodic portions of the stimuli had an unexpected effect on perception that remains to be explained. A number of Subjects showed very strong right-ear dominance in these tests. It is suggested that the range and reliability of the laterality effects obtained, and certain other methodological features, make the present tests promising as tools for assessing individual differences in ear dominance.
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