The Reliability of Functional Gain This study examined the test-retest reliability of unaided and aided sound-field thresholds and the functional gain values derived from these measurements. Sound-field warble-tone thresholds were obtained at 250, 1000, and 4000 Hz from 24 hearing-impaired listeners with and without their hearing aids. Test-retest standard deviations were significantly larger for functional ... Research Article
Research Article  |   May 01, 1990
The Reliability of Functional Gain
 
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Article Information
Research Article   |   May 01, 1990
The Reliability of Functional Gain
Journal of Speech and Hearing Disorders, May 1990, Vol. 55, 193-197. doi:10.1044/jshd.5502.193
History: Received November 8, 1988 , Accepted April 27, 1989
 
Journal of Speech and Hearing Disorders, May 1990, Vol. 55, 193-197. doi:10.1044/jshd.5502.193
History: Received November 8, 1988; Accepted April 27, 1989

This study examined the test-retest reliability of unaided and aided sound-field thresholds and the functional gain values derived from these measurements. Sound-field warble-tone thresholds were obtained at 250, 1000, and 4000 Hz from 24 hearing-impaired listeners with and without their hearing aids. Test-retest standard deviations were significantly larger for functional gain than for unaided thresholds, but only slightly and nonsignificantly larger than for aided thresholds. The variability of functional-gain measures is discussed in relation to measures of insertion gain obtained with probe-tube microphones.

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