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The sequential curing effect in speech production

C A Sevald1, G S Dell

  • 1Department of Psychology, University of Illinois at Urbana-Champaign, 61820.

Cognition
|November 1, 1994
PubMed
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Speech production plans reveal how word sounds are organized. Repeating initial sounds slows speech, while repeating final sounds or whole words speeds it up, suggesting sequential phoneme activation.

Area of Science:

  • Psycholinguistics
  • Speech Production
  • Phonology

Background:

  • Understanding how humans plan and execute speech is crucial for psycholinguistics.
  • The representation of word sounds in speech production plans remains an active area of research.
  • Previous studies suggest sequential processing, but the precise mechanisms and location-specific effects are debated.

Purpose of the Study:

  • To investigate the representation of word sounds in speech production planning.
  • To determine how different sound repetitions within a word affect speaking rate.
  • To explore the role of phoneme position in speech production interference.

Main Methods:

  • Three experiments were conducted involving subjects producing sequences of Consonant-Vowel-Consonant (CVC) and bisyllabic words.

Related Experiment Videos

  • Speaking rate was measured while systematically varying repetitions of initial consonants, vowels, final consonants, consonant-vowel units (CVs), rhymes, and whole CVCs.
  • Location-based effects on speech production were analyzed.

    • Main Results:

    • Repeating the final consonant or the entire CVC word increased the number of repetitions produced.
    • Repeating initial sounds or CVs significantly slowed down the speaking rate.
    • These location-based effects were replicated and extended to bisyllabic words.

    Conclusions:

    • Speech production planning involves sequential activation of phonemes, primarily from left to right.
    • Competition between formally similar words, particularly at discrepant phoneme positions, influences speech rate.
    • The findings support a model where phoneme activation and competition are position-dependent in speech planning.