Three groups of judges (n=18) differing in stuttering judgment experience identified stuttering events in repeated speech samples, to investigate a measurement methodology based on time-interval analyses. Results showed interjudge agreement was affected by the particular speech sample, the judges' previous experience, and the length of the…

This study analyzed spontaneous speech samples of 10 children (ages 10-14) who stuttered, with no history of treatment based on prolonged speech. Acoustic measures showed no significant posttreatment increases in durations of acoustic segments. However, for acoustic measures of vowel duration and articulation rate, posttreatment speech samples…

This study examined the effects of structured conversational turn-taking on disfluencies and speech rate of a boy (age 5) who stuttered, based on dinner-time conversations in the subject's home. Results indicated that disfluencies decreased when structured conversational turn-taking was instituted and increased when turn-taking conditions were not…

This replication study of time-interval judgments of stuttering found higher interjudge agreement than previously reported for event-based analyses of stuttering judgments or time-interval analyses of event judgments. Judges with high intrajudge agreement levels also showed higher interjudge agreement levels than did judges with low intrajudge…

Stuttering on function words was examined in 51 children and adults who stutter. Stuttering rate was a function of age (children stuttered more on function words), position (function words in early positions in utterances were more likely to be stuttered), and on whether the function word occurred before or after the single content word.…

This study investigated the effects of contextualization on fluency in 35 school-age children with either stuttering, language impairment, or normal fluency. Analysis of the children's discourse samples, half of which were produced with contextual cues, found stutterers demonstrated a significant reduction in frequency of stuttering in the…

This study evaluated recorded performances of 84 children of whom 22 had persistent stuttering. Although initially the persistent stuttering group had significantly poorer phonological skills, assessment after 1 and 2 years found no differences indicating faster phonological improvement for the persistent stuttering group. Results raise questions…

Medications with dopamine antagonist properties, such as haloperidol, and those with serotonin reuptake inhibitor properties, such as clomipramine, have been shown to improve fluency. To examine the degree to which each of these two pharmacological mechanisms might independently affect fluency, a selective serotonin reuptake inhibitor, paroxetine,…

The purpose of the present study was to investigate whether the link that has been established between stuttering and linguistic stress in adolescents and adults (the so-called stress effect) can also be observed in childhood stuttering. To account for confounding variables, both within-word position and grammatical class were measured, because…

Purpose: The aims of this study were to evaluate the efficacy of telehealth delivery of the Lidcombe Program of Early Stuttering Intervention, compared with a control group, and to determine the number of children who could be regarded as "responders." Method: A speech-language pathologist provided telehealth delivery of the Lidcombe…

Reported are five studies on the use of delayed auditory feedback (DAF) with stutterers. The first study indicates that sex differences and age differences in temporal reaction were found when subjects (5-, 7-, 9-, 11-, and 13-years-old) recited a nursery rhyme under DAF and NAF (normal auditory feedback) conditions. The second study is reported…

A study of children who stutter (n=12), who have recovered early from stuttering (n=12), and who recovered later from stuttering (n=12) compared the phonological characteristics of the three groups with a control group. Results indicated that poor phonological ability in the early stage of stuttering appeared to be a contributing factor to the…

A series of single-subject experiments evaluated the effects of frequency-altered auditory feedback (FAF) on the speech performance of four adult males who stutter. FAF was compared with normal auditory feedback in oral reading and spontaneous speech. Results indicate no consistencies across subjects in responses to FAF. (Author/CR)

Two experiments, involving 12 adults who stutter and 12 controls, evaluated the effects on speech response latency of picture naming tasks designed to place selective demands on lexicalization. The experiments investigated the effects of one-word versus two-word responses and a word's frequency of occurrence versus its number of syllables.…

Reports a long-term follow-up of the effects of self-modeling on the reduction of stuttering in two groups of students who initially evidenced different mean percentages of stuttered words. Results reveal that students involved in the initial study who initially exhibited substantially higher mean percentages of stuttered words, maintained their…