The paper reviews approaches for the investigation of speech quality in stuttering treatment including speech quality research in areas beyond stuttering, stuttering treatment speech quality research, pertinent findings from nontreatment stuttering research, and issues in recent speech quality management research with stutterers. (Author/DB)

The study with three adult stutterers evaluated the effects of instructions to rate and modify the naturalness of their speech and compared their self evaluations with evaluations of listeners. (Author/DB)

This study, involving an adolescent and adult male with stuttering problems, evaluated modification of the frequency of electroglottograph-measured phonation intervals on stuttering and speech naturalness. Both subjects demonstrated that stuttering could be controlled by modifying the frequency of phonation intervals within short duration ranges,…

Two experiments investigating interval-by-interval interjudge and intrajudge agreement for stuttered and nonstuttered speech intervals found that training of judges could improve reliability levels; judges with relatively high intrajudge agreement also showed relatively higher interjudge agreement; and interval-by-interval interjudge agreement was…

Twelve adult stutterers were instructed to self-rate the speech naturalness (how natural their speech sounds) and feel naturalness (the amount of attention they are paying to the way they are speaking) of their speech under a variety of conditions across repeated rating occasions. Results showed that subjects were relatively consistent and valid…

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…

Purpose: This article critically reviews evidence to determine whether the use of disfluency typologies, such as "syllable repetitions" or "prolongations", has assisted the understanding or treatment of developmental stuttering. Consideration is given to whether there is a need for a fundamental shift in the basis for constructing measures of…

Four experienced stuttering researchers viewed videodisks of spontaneous speech from chronic stutterers and attempted to locate the precise onset and offset of individual stuttering events. Results showed interjudge disagreements that challenge the reliability and validity of onset and offset judgments. Highly agreed stuttering events were…

Ten speech-language pathology students judged five-second audiovisually recorded speech intervals as stuttered or nonstuttered in group and single-subject experiments. Results showed that judgment accuracy tended to increase after training, both for speakers used during the training process and unfamiliar speakers. Slight increases in interjudge…