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ORIGINAL ARTICLE
Commun Sci Disord. 2021;26(3): 700-717.
Published online September 30, 2021.
doi: https://doi.org/10.12963/csd.21846
A Longitudinal Analysis on the Duration of Utterance in a Conversational Turn and Turn-Switching Pause in Preschool Children who Stutter during Interactions with Their Mothers
Hyo Jung Kwaka , Hyun Sub Sima , and Soo Bok Leeb
aDepartment of Communication Disorders, Ewha Womans University, Seoul, Korea
bDepartment of Speech-Language Therapy & Aural Rehabilitation, Woosong University, Daejeon, Korea
Corresponding Author: Soo Bok Lee ,Tel: +82-42-630-9222, Fax: +82-42-630-9229, Email: sblee@wsu.ac.kr
Received July 20, 2021  Revised: August 11, 2021   Accepted August 18, 2021
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ABSTRACT
Objectives
The purpose of this study was to investigate, longitudinally, the duration of utterance in a conversational turn, duration of turn-switching pause, and frequency of disfluency which young children who stutter (CWS) and children who do not stutter (CWNS) showed during interactions with their mothers.
Methods
Subjects for this study consisted of 2-5 year old CWS (male 2 and female 4), an age-matched group of CWNS (male 3 and female 3), and their mothers. Frequencies of normal disfluency (ND) and abnormal disfluency (AD), and duration of utterance in a conversational turn and duration of turn-switching pause were measured two times (initial visit and 12 months later) over the course of one year.
Results
At initial visit, a significant group difference was found in frequency of AD. However, no significant difference was observed in duration of utterance in a conversational turn and duration of turn-switching pause both between two parent groups and between two child groups at initial visit and 12 months later. In the CWS group, at initial visit, a positive correlation was found between frequency of AD and mother’s duration of utterance in a conversational turn. Frequency of AD was negatively correlated with both duration of turn-switching pause of mothers and that of children. After 12 months, there was a negative correlation between frequency of AD and mother’s duration of utterance in a conversational turn.
Conclusion
These findings suggest that the longitudinal study of individual characteristics of CWS · mothers interactions can help speech-language pathologists to identify the interactional factors related to the recovery or persistence of stuttering and to enhance the efficacy of parent · child interaction therapy for CWS.
Keywords: Preschool children | Stuttering | Longitudinal study | Interaction | Duration of utterance in a conversational turn | Duration of turn-switching pause
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