Effects of Physiological Arousal on Speech Motor Control and Speech Motor Practice in Preschool-Age Children Who Do and Do Not Stutter

Autor/inn/en	Tumanova, Victoria; Woods, Carly; Wang, Qiu
Titel	Effects of Physiological Arousal on Speech Motor Control and Speech Motor Practice in Preschool-Age Children Who Do and Do Not Stutter
Quelle	In: Journal of Speech, Language, and Hearing Research, 63 (2020) 10, S.3364-3379 (16 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Tumanova, Victoria)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Physiology; Arousal Patterns; Emotional Response; Pictorial Stimuli; Psychomotor Skills; Articulation (Speech); Stuttering; Preschool Children; Age Differences; Stress Variables; Speech Tests; Language Tests; Maturity (Individuals); New York (Syracuse); Goldman Fristoe Test of Articulation; Clinical Evaluation of Language Fundamentals + Suchen Sie Ihr Suchwort? Physiologie; Emotionales Verhalten; Fantasieanregung; Psychomotorische Aktivität; Stammer; Stottern; Pre-school age; Preschool age; Child; Children; Pre-school education; Preschool education; Vorschulalter; Kind; Kinder; Vorschulkind; Vorschulkinder; Vorschulerziehung; Vorschule; Age; Difference; Age difference; Altersunterschied; Sprechtest; Language test; Sprachtest; Reifung
Abstract	Purpose: We examined the effects of physiological arousal on speech motor control and speech motor practice effects in preschool-age children who do (CWS) and do not stutter (CWNS). Method: Participants included 18 CWS (M[subscript age] = 4 years 5 months) and 18 age- and gender-matched CWNS. The participants repeated a phrase "buy bobby a puppy" interspersed with viewing pictures from the International Affective Picture System under two experimental conditions speaking after viewing pictures with (a) negative and (b) neutral valence. Participants' lip movements were tracked using Optotrak system. The spatiotemporal index and mean utterance duration were calculated to examine speech motor control and speech motor practice effects. Skin conductance level was measured during the experimental conditions to assess participants' physiological level of arousal. Results: Preschool-age CWS demonstrated greater speech movement variability across all conditions and trials than CWNS. Furthermore, the younger participants produced more variable articulatory movements than the older participants. Participants' speech movement variability did not significantly differ between the negative and neutral experimental conditions, and the level of physiological arousal did not have a significant effect on it. There was a nonsignificant trend of decrease in speech movement variability across the repeated trials in both groups. Last, CWS and CWNS did not differ in their mean utterance duration, suggesting that their articulation rate was similar across all conditions and trials. Conclusions: Our findings indicate that, compared to preschool-age CWNS, CWS demonstrate less mature speech motor control. However, present findings do not support the hypothesis that CWS benefit less from motor practice relative to CWNS. Given that our conditions elicited similar levels of arousal in the participants, future research is needed to examine whether physiological arousal disrupts speech motor control in preschool-age children potentially contributing to disruptions of speech fluency and the development of stuttering. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01