Reduced Duration of Stuttering-Like Disfluencies and Consistent Anticipatory Slowing during an Adaptation Task

Autor/inn/en	Neel, Amy; Mizusawa, Chloe; Do, Quynh; Arenas, Richard
Titel	Reduced Duration of Stuttering-Like Disfluencies and Consistent Anticipatory Slowing during an Adaptation Task
Quelle	In: International Journal of Language & Communication Disorders, 58 (2023) 6, S.2162-2177 (16 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Neel, Amy)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1368-2822
DOI	10.1111/1460-6984.12930
Schlagwörter	Stuttering; Language Fluency; Reading Aloud to Others; Syllables; Task Analysis + Suchen Sie Ihr Suchwort? Stammer; Stottern; Language skill; Language skills; Sprachkompetenz; Silbe; Aufgabenanalyse
Abstract	Purpose: The adaptation effect in stuttering, traditionally described as the reduction of stuttering moments over repeated readings, provides a context to investigate fluency facilitation as well as a relatively controlled means of comparing fluent speech in the immediate vicinity of words that were stuttered versus fluently produced. Acoustic studies have documented decreased duration of fluent speech during adaptation but rarely address changes in disfluencies or the speech preceding or following the disfluencies. This study addresses this gap in the research by documenting frequency and duration changes in both fluent and stuttered syllables. Method: Fifteen people who stutter read passages aloud five times in succession. Frequency and duration of fluent syllables, pauses, stuttering-like disfluencies (SLDs) and other disfluencies (ODs) were compared across the five readings. In addition, durations for syllables before and after pauses and SLDs were compared to determine if there were anticipation or carryover effects of SLDs on surrounding syllables. Results: Durations measured for more than 22 000 fluent syllables, 1531 pauses, 128 ODs and 1752 SLDs. For most of the 15 participants, significant decreases in both frequency and duration of SLDs over the five readings were observed. In addition, lengthening of fluent syllables immediately preceding the disfluent syllables was observed: this pre-SLD lengthening did not change over the five readings. Conclusions: Decreased duration of SLDs across readings supports the motor practice hypothesis, which assumes that successive reading of the same text increases the efficiency of the speech motor plans resulting in less stuttering and decreased durations of the stuttering that persists. Pre-SLD lengthening merits further study, because it informs our knowledge of the time course of stuttered events and may be associated with conscious or unconscious anticipation of upcoming SLDs that does not decrease with motor practice. (As Provided).
Anmerkungen	Wiley. Available from: John Wiley & Sons, Inc. 111 River Street, Hoboken, NJ 07030. Tel: 800-835-6770; e-mail: cs-journals@wiley.com; Web site: https://www.wiley.com/en-us
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01