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Related Experiment Videos

The Maryland CNC Test: normative studies.

G D Causey, L J Hood, C L Hermanson

    Audiology : Official Organ of the International Society of Audiology
    |January 1, 1984
    PubMed
    Summary
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    The Maryland CNC Test shows good reliability for assessing word recognition in both normal-hearing and hearing-impaired individuals. This test effectively differentiates varying degrees of speech recognition ability.

    Area of Science:

    • Audiology
    • Speech-Language Pathology
    • Hearing Science

    Background:

    • The Maryland CNC Test is a tool for assessing speech recognition.
    • Understanding its performance characteristics is crucial for accurate clinical application.

    Purpose of the Study:

    • Determine the performance-intensity functions of the Maryland CNC Test (male voice).
    • Examine the equivalence of the test's 10 word lists.
    • Establish the test-retest reliability of the Maryland CNC Test.

    Main Methods:

    • Evaluated word recognition performance in normal-hearing and hearing-impaired listeners.
    • Analyzed the linear portion of the performance-intensity function.
    • Assessed list equivalence and test-retest reliability through statistical analysis.

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    Main Results:

    • Normal listeners showed a 2.1% increase per decibel in word recognition; hearing-impaired listeners showed a 1.3% increase per decibel.
    • Six of the ten word lists were found to be equivalent.
    • Good test-retest reliability was demonstrated.
    • Hearing-impaired subjects exhibited a wide range of scores.

    Conclusions:

    • The Maryland CNC Test demonstrates reliable performance-intensity functions for both normal and hearing-impaired listeners.
    • The test exhibits good list equivalence and test-retest reliability.
    • The Maryland CNC Test is effective in distinguishing varying degrees of word recognition ability in hearing-impaired individuals.