Abstract
The effects of varying presentation level on the Staggered Spondaic Word (SSW) test scores of sensorineural hearing-impaired subjects were investigated. Subjects were 15 adults having cochlear hearing losses between 30 and 50 dB (re: PTA). Performance-intensity (PI) functions were generated using subjects SSW test scores. Each subject received all 40-SSW test items, but the PI functions were generated by presenting items numbered 1–10 at 20 dB SL (re: three frequency PTA); 11–20 at 30 dB SL; 21–30 at 40 dB SL; and 31–40 at 50 dB SL. These results for the hearing-impaired were compared to functions reported earlier for normal subjects [P. C. Doyle, thesis, University of California, Santa Barbara (1981)]. The PI functions were analyzed for “competing” versus “noncompeting” conditions, and differences between subjects' raw SSW scores and word discrimination scores as a function of presentation level. Practical and theoretical implications for the clinical presentation of the SSW test at the various intensity levels to hearing-impaired adults are discussed.
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