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Phonotactic probability effects in children who stutter.

Julie D Anderson1, Courtney T Byrd

  • 1Department of Speech and Hearing Sciences, Indiana University, Bloomington, IN 47405-7002, USA. judander@indiana.edu

Journal of Speech, Language, and Hearing Research : JSLHR
|July 29, 2008
PubMed
Summary
This summary is machine-generated.

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Phonotactic probability affects the type of disfluencies in children who stutter (CWS), particularly single-syllable word repetitions. This suggests different disfluency types may stem from distinct processing disruptions.

Area of Science:

  • Speech and Language Pathology
  • Childhood Developmental Disorders
  • Linguistic Phonetics

Background:

  • Stuttering is a complex speech disorder affecting fluency in children.
  • Phonotactic probability, the likelihood of sound sequences, is a linguistic factor potentially influencing speech production.
  • Understanding factors influencing stuttering in preschool children is crucial for effective intervention.

Purpose of the Study:

  • To investigate the impact of phonotactic probability on overall word fluency in preschool children who stutter (CWS).
  • To determine if phonotactic probability influences the specific types of disfluencies produced by CWS.
  • To explore the relationship between linguistic properties of words and stuttering behaviors.

Main Methods:

  • Obtained language samples from 19 preschool CWS.

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  • Paired each stuttered word with a matched fluent word based on linguistic features.
  • Calculated phonotactic probability values for all words using an online database.

    • Main Results:

    • Phonotactic probability did not significantly affect the overall likelihood of words being stuttered.
    • Phonotactic probability significantly influenced the type of disfluency observed.
    • Single-syllable word repetitions exhibited lower phonotactic probability compared to fluent words, part-word repetitions, and sound prolongations.

    Conclusions:

    • The findings suggest phonotactic probability plays a role in the manifestation of specific disfluency types in CWS.
    • This differential effect supports theories proposing that various disfluency types may arise from disruptions at different processing levels.
    • Further research can explore the interplay between phonotactic probability and specific stuttering subtypes.