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Infant behavioral state and speech sound discrimination.

L Williams, J Golenski

    Child Development
    |December 1, 1979
    PubMed
    Summary

    Infant alertness significantly impacts speech sound discrimination, with more alert infants showing greater responsivity. However, changes in speech sounds do not appear to alter the infant's state.

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    Area of Science:

    • Developmental Psychology
    • Auditory Perception
    • Infant Cognition

    Background:

    • Understanding infant perception is crucial for developmental studies.
    • The high amplitude sucking procedure is a common method for assessing infant responses.
    • Infant state, such as alertness, may influence cognitive task performance.

    Purpose of the Study:

    • To examine the relationship between infant state and speech sound discrimination.
    • To determine if infant alertness affects their ability to detect changes in speech sounds.

    Main Methods:

    • Utilized the high amplitude sucking procedure in three speech sound discrimination experiments.
    • Collected and rated state records from 94 infants by two independent scorers.
    • Analyzed state as both an independent and dependent variable.

    Main Results:

    • Infant state significantly interacted with responsivity to sound change.
    • Alert infants exhibited higher sucking rates following auditory stimuli changes.
    • No significant effect of stimulus changes on infant state was observed.

    Conclusions:

    • Infant alertness is a key factor in speech sound discrimination.
    • The findings highlight the importance of considering infant state in auditory perception research.
    • Speech sound changes do not appear to modulate infant state during these tasks.

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