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Related Experiment Videos

Half-list speech discrimination measures in hearing aid evaluations

B J Edgerton, D A Klodd, R C Beattie

    Archives of Otolaryngology (Chicago, Ill. : 1960)
    |November 1, 1978
    PubMed
    Summary

    Half-lists from speech discrimination tests are unreliable for evaluating hearing aids. These shorter tests showed lower consistency and greater variability, making them unsuitable for differentiating hearing aid performance.

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    Area of Science:

    • Audiology
    • Hearing Aid Technology
    • Speech Perception

    Background:

    • Hearing aids are crucial for individuals with moderate hearing impairment.
    • Accurate speech discrimination scores (SDSs) are essential for selecting effective hearing aids.
    • The efficiency of shorter speech discrimination tests requires validation.

    Purpose of the Study:

    • To assess the reliability and consistency of half-list speech discrimination tests compared to full-lists.
    • To determine if half-lists are suitable for differentiating the performance of hearing aids.

    Main Methods:

    • Twenty-three adults with moderate hearing impairment participated.
    • Speech discrimination scores were obtained using four preselected hearing aids.
    • Test-retest reliability was analyzed for both half-lists and full-lists.

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    Main Results:

    • Half-lists demonstrated lower reliability coefficients than full-lists.
    • Hearing aid rankings based on half-list SDSs were less consistent.
    • Over one-third of subjects showed individual differences of 10% or greater between half-list SDSs.

    Conclusions:

    • Half-lists derived from NU-6 tests are not recommended for differentiating hearing aid performance.
    • Full-list speech discrimination tests provide more reliable data for hearing aid evaluation.
    • Clinical decisions regarding hearing aid selection should rely on more robust testing methods.