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Developmental changes in speech discrimination in infants.

R E Eilers, W R Wilson, J M Moore

    Journal of Speech and Hearing Research
    |December 1, 1977
    PubMed
    Summary
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    This study introduces a new visually reinforced infant speech discrimination (VRISD) method. Infants show developmental changes in discriminating speech sounds, highlighting advances in infant speech perception research.

    Area of Science:

    • Developmental Psychology
    • Linguistics
    • Auditory Perception

    Background:

    • Infant speech perception is crucial for language acquisition.
    • Existing methods for assessing infant speech discrimination have limitations.
    • Understanding developmental changes in auditory processing is key.

    Purpose of the Study:

    • To introduce and evaluate a novel visually reinforced infant speech discrimination (VRISD) paradigm.
    • To investigate infant ability to discriminate various speech sound contrasts.
    • To compare findings with existing data from other infant auditory paradigms.

    Main Methods:

    • Utilized a visually reinforced infant speech discrimination (VRISD) paradigm.
    • Tested infants at two different ages on multiple consonant-vowel and vowel-consonant speech contrasts.

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  • Compared results with data from a high-amplitude sucking paradigm.

    • Main Results:

    • Evidence of developmental changes in infant speech-sound discrimination was observed.
    • Performance varied across different speech contrasts, suggesting differential salience of acoustic cues.
    • The VRISD paradigm proved effective for assessing infant speech perception.

    Conclusions:

    • The visually reinforced infant speech discrimination (VRISD) paradigm is a viable tool for studying infant speech perception.
    • Infant speech sound discrimination abilities undergo developmental changes.
    • Acoustic cue salience influences the ease of speech sound discrimination in infants.