The study was designed to assess the effects of on-off voice adjustments on the frequency of stuttering in 15 child stutterers in the third through the seventh grades who were asked to read two passages, one which contained a normal distribution of voiced and voiceless sounds; the other contained nearly all voiced sounds. (Author)

Comparison of the formant frequencies of 15 adult stutterers' fluent and disfluent vowels and of stutterers' and nonstutterers' fluent vowels indicated that differences (between stutterers and nonstutterers) could be accounted for by differences in vocal tract dimensions. No differences were found between frequencies of fluent and disfluent vowels…

Surface electrodes were used to describe the perioral reflexes in seven stutterers and five nonstutterers and electromyographic (EMG) recordings were obtained at electrode sites associated with the orbicularis oris inferior muscle and the depressor labia inferior muscle. A difference was noted in the pattern of reflex response between the two…

Surface electrodes were used to describe the perioral reflexes in seven stutterers and five nonstutterers and electromyographic (EMG) recordings were obtained at electrode sites associated with the orbicularis oris inferior muscle and the depressor labia inferior muscle. A difference was noted in the pattern of reflex response between the two…

Speech analysis of 10 two- to three-year-olds diagnosed by parents as having begun stuttering and 10 matched normally speaking children indicated that stutterers were three times more disfluent than nonstutterers. Part-word repetitions and sound prolongations were found to distinguish the two groups significantly. (Author/CL)

Simple reaction times of 13 stuttering and 13 nonstuttering children (8-12 years old) matched for age, sex, and handedness were compared in experimental conditions requiring button-pressing responses and nonspeech and speech-like responses. Results of the forefinger data suggested that stuttering is not related to an organically based overall…

Electroglottographic (EGG) and acoustic waveforms of the first few glottal pulses of voicing were monitored and voice onset time (VOT) measured during an adaptation task performed by adult stutterers and controls. Fluent utterances of stutterers resembled those of controls. After dysfluencies, however, the EGG signal increased gradually, lending…

During the silent reading of a 320-word passage, the eye movements of 22 grade school stutters and 22 nonstutters were recorded by means of a computer-controlled eye-marker. Frame-by-frame analysis of the recordings revealed that the stuttering children displayed significantly more eye fixations and eye regressions than the nonstuttering children.…

Stuttering frequency in 10 adult stutterers (ages 22-48 years) was measured when speaking spontaneously alone, then with an adult male conversationalist, and finally speaking alone again. Percent stuttering increased in the conversational situation compared with the first alone situation and decreased again during the second alone situation.…

Fourteen right-handed stutterers and 14 normal speakers responded to monaurally presented stimuli with their right and left hands. Results suggested a bilateral model of neurolinguistic organization for stutterers in which both hemispheres must participate simultaneously in the decoding process. (Author/DB)

Results indicated that increasing age, higher degrees, more coursework, or more clinical experience did not produce more positive connotations of stuttering among 206 speech-language pathologists. Those holding the Certificate of Clinical Competence in Speech-Language Pathology showed more positive connotative responses than the noncertified…

Comparison of 10 stuttering and 10 nonstuttering young adult subjects on self-paced rhythmic tasks at various rates found that the stutterers performed more slowly than the nonstutterers and were less variable than nonstutterers suggesting less flexible systems more susceptible to breakdown. (Author/DB)

The study investigated the reaction times in the fluent speech utterances of 20 adult stutterers and 20 nonstutterers. Results indicated that reaction times for longer utterances and for utterances requiring minimal preparation were longer for stutterers than for nonstutterers, suggesting stutterers may have difficulty in motor programing of…

This study compared duration characteristics of single-syllable whole-word repetitions and part-word repetitions in the speech of 20 preschool children who stuttered, recorded near the onset of their stuttering, to those of 20 nonstuttering children. The duration of silent intervals between spoken segments within repetitions was found to be…