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  • Title: Development and validation of the Leuven intelligibility sentence test with male speaker (LIST-m).
    Author: Jansen S, Koning R, Wouters J, van Wieringen A.
    Journal: Int J Audiol; 2014 Jan; 53(1):55-9. PubMed ID: 24152309.
    Abstract:
    OBJECTIVE: In addition to the LIST with a female speaker ( van Wieringen & Wouters, 2008 ), a new speech perception test with a male voice was developed and validated, for evaluating the intelligibility performance of cochlear implant (CI) users or severely hearing-impaired persons. DESIGN: Three experimental steps were carried out: (1) a perceptual optimization of the recorded materials, (2) an evaluation in normal-hearing (NH) listeners, and (3) a validation in CI-users. Measurements were performed both in quiet and in noise. STUDY SAMPLE: Forty-four NH subjects and six CI-users participated. RESULTS: After selecting the sentences with a similar intelligibility, the reference psychometric curve for NH listeners was determined, showing steep slopes for measurements in quiet (12.3%/dB) and in noise (18.7%/dB), similar to the LIST with female voice. The 38 lists of 10 sentences yielded equal scores, and the within-subject test-retest reliability was high (1.7 dB in quiet, 1.1 dB in noise). For the CI-users, parallel psychometric curves were found between the LIST with male and female voice. CONCLUSIONS: The LIST-m is a reliable and valid speech intelligibility test that can be used for CI-users, both in quiet and in noise.
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