Phone Rate and the Effective Planning Time Hypothesis of Stuttering Effects on syllable disfluency and phone rate (duration of phones spoken per minute) were compared in 19 adult stutterers under three reading rate conditions: control; slow normally-spoken-word-syllable timed (WS); and phone-prolongation (PP) matched to WS in syllable rate. Both phone rate and syllable disfluency were progressively reduced from control to ... Research Article
Research Article  |   December 01, 1979
Phone Rate and the Effective Planning Time Hypothesis of Stuttering
 
Author Affiliations & Notes
  • William H. Perkins
    University of Southern California, Los Angeles
  • Jody Bell
    University of Southern California, Los Angeles
  • Linda Johnson
    University of Southern California, Los Angeles
  • Janice Stocks
    University of Southern California, Los Angeles
Article Information
Research Articles
Research Article   |   December 01, 1979
Phone Rate and the Effective Planning Time Hypothesis of Stuttering
Journal of Speech, Language, and Hearing Research, December 1979, Vol. 22, 747-755. doi:10.1044/jshr.2204.747
History: Received August 31, 1978 , Accepted January 8, 1979
 
Journal of Speech, Language, and Hearing Research, December 1979, Vol. 22, 747-755. doi:10.1044/jshr.2204.747
History: Received August 31, 1978; Accepted January 8, 1979

Effects on syllable disfluency and phone rate (duration of phones spoken per minute) were compared in 19 adult stutterers under three reading rate conditions: control; slow normally-spoken-word-syllable timed (WS); and phone-prolongation (PP) matched to WS in syllable rate. Both phone rate and syllable disfluency were progressively reduced from control to WS to PP conditions. These results strongly support the discoordination hypothesis that any condition which facilitates initiation of phonation in coordination with articulation and respiration will reduce stuttering. A broader hypothesis is that effective planning time for voice onset coordinations is the common element that explains the power of retarded phone rate, reduction of phonatory complexity, and rhythm virtually to eliminate stuttering.

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