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ORIGINAL ARTICLE
Commun Sci Disord. 2021;26(3): 659-671.
Published online September 30, 2021.
doi: https://doi.org/10.12963/csd.21836
The Effect of Core Vocabulary Extension Program for Children with Inconsistent SSD
Yoo-Kyeong Koa , and Soo-Jin Kimb
aBarunsori Speech, Language & Learning Clinic, Jeju, Korea
bDepartment of Speech-Language Pathology, Nazarene University, Cheon-an, Korea
Corresponding Author: Soo-Jin Kim ,Tel: +82-41-570-7978, Fax: +82-41-570-7846, Email: sjkim@kornu.ac.kr
Received July 5, 2021  Revised: August 8, 2021   Accepted August 23, 2021
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ABSTRACT
Objectives
The purpose of this study was to determine the effect of the Core Vocabulary Extension Program for establishing speech sound consistency on speech inconsistency and accuracy of children with inconsistent SSD.
Methods
Four children with inconsistent SSD aged 3-5 years who exhibited speech sound inconsistency, phonological error patterns, and articulation problems at the same time participated in this study. The program of this study used a core vocabulary approach and a multi-sensory approach, and parental support was provided at the same time. The experimental design used a multiple probe baseline design, with 3-5 baseline evaluations, 10 treatment evaluations, and 3 maintenance evaluations were performed. Data analysis of dependent variables, mean, trend line slope, standard deviation, immediate effect of treatment, and ratio of non-overlapping data (PND) were analyzed.
Results
As a result of the study, inconsistency was reduced and articulation ability was improved. Speech inconsistency improvement was effective in all four participating children, but accuracy improvement was only effective in three children.
Conclusion
This study is significant in that it confirmed the therapeutic effect of the Core Vocabulary Extension Program which integrated a multisensory approach and parent coaching based on a core vocabulary approach on speech sound inconsistency and accuracy of children with severe speech sound disorder accompanied by intellectual problems and language disorders. In the future, it is necessary to apply a phonological approach to remove the remaining phonological error patterns after speech consistency is established and to confirm the effectiveness of the phonological approach
Keywords: Inconsistency | Core-vocabulary approach | Multi-sensory approach | Inconsistent SSD (speech sound disorders)
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