To determine whether or not a modified delayed auditory feedback would smooth the speech pattern and increase fluency in stutterers, eight severe stutterers were given individual 10 to 40 hour speech sessions. Feedback was delayed by .2 seconds, the rate of speech controlled by the experimenter, and speech patterns were smoothed by prolonging…

Reported was a 3 week fluency shaping program in which 56 stutterers (aged 8 to 59 years) were each assisted by a single speech therapist through the following program stages: very slow speech; vowels; consonant initiated syllables; one, two, and three syllable words; short, self generated sentences; spontaneous speech; and transfer. Ss also…

Several experiments that manipulate stuttering by the use of delayed auditory feedback (DAF) and the prolongation of speech are reported. In a study on six severe stutterers (aged 15 to 47), self monitoring as a source of reinforcement in the use of DAF reduced stuttering frequency. Stuttering frequency was investigated with six severe stutterers…