Dichotic Word Recognition for Young Adults with Normal Hearing
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Date
2009-06
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Publisher
The Ohio State University
Abstract
Dichotic word recognition was measured in young adults with normal hearing at six intensity levels to produce a performance-intensity function. The 50%-correct threshold and slope of the function were compared to that of performance-intensity functions of monaural listening tasks. Differences in right and left ear performance were also compared to explore possible ear advantage effects. The resultant performance-intensity function displayed the characteristic s-shape of monaural listening tasks, but had a higher 50%-correct threshold and a shallower slope. Both of these observations can be attributed to the difficulty of dichotic listening tasks as compared to the difficulty of monaural listening tasks. Fifty percent-correct thresholds between the right and left ear were not significantly different, although the right ear displayed a steeper slope than the left ear. These results were consistent with the presence of a dichotic right-ear advantage.
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Keywords
dichotic word recognition, performance-intensity function