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Related Experiment Videos

Twins' reactions to delayed auditory feedback.

B A Timmons

    Perceptual and Motor Skills
    |October 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Identical twins showed more similar speech patterns under delayed auditory feedback than fraternal twins. This suggests a stronger genetic influence on speech fluency and responses to auditory challenges.

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    Area of Science:

    • Speech and Hearing Sciences
    • Behavioral Genetics

    Background:

    • Delayed auditory feedback (DAF) is known to affect speech production.
    • Twin studies are crucial for understanding the heritability of behavioral traits.

    Purpose of the Study:

    • To investigate the influence of genetic factors on speech responses to delayed auditory feedback (DAF).
    • To compare the effects of DAF on speaking times and disfluencies in identical versus fraternal twins.

    Main Methods:

    • Ten pairs of identical and ten pairs of fraternal twins participated.
    • Participants spoke under varying durations of DAF (0-500 msec).
    • Speaking times and disfluencies were analyzed using correlation coefficients.

    Main Results:

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  • Identical twins exhibited significantly correlated speaking times at more DAF intervals than fraternal twins.
  • Identical twins also showed significantly correlated difference scores and disfluencies at specific DAF intervals.
  • Combined data with a previous study reinforced that identical twins' DAF responses are more correlated than fraternal twins'.

    • Conclusions:

    • Speech responses to delayed auditory feedback show a higher degree of correlation in identical twins compared to fraternal twins.
    • This finding supports a significant genetic contribution to the modulation of speech production under auditory perturbation.