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KMID : 1036820160210040605
Communication Sciences & Disorders
2016 Volume.21 No. 4 p.605 ~ p.616
The Effect of Vocal Rehearsal on Retrieval of New Phonological Representations in Children with and without Specific Language Impairment
Ryu Eun-Joo

Ha Ji-Wan
Abstract
Objectives: This research aims to study the ability to retain and retrieve new phonological representations (PR) with and without vocal rehearsals in children with specific language impairments (SLI) and typically developing (TD) children.
Methods: Ten SLI children, 10 chronological age (CA)-matched children and 10 language age (LA)-matched children participated in the research. To compare the three groups¡¯ performance in terms of accuracy and error types, this test set time intervals of 10 seconds and 5 minutes; one with vocal rehearsal and one without vocal rehearsal after a lapse of time. The relationship among the new PR task performances and receptive vocabulary, and expressive vocabulary were examined.

Results: SLI group showed significantly lower ability in retrieving new PR than CA group but were similar to LA group. The performance with vocal rehearsal was not significantly better than that without vocal rehearsal after 10 seconds but it was significantly better after 5 minutes. SLI group showed significantly more error types such as syllable omission, lexicalization and no response when compared to the two other groups. There were significant correlations among the new PR tasks, receptive vocabulary, and expressive vocabulary.

Conclusion: The study results indicate that vocal rehearsals contribute to the improvement of new PR storage and retrieval in both SLI and TD children.
KEYWORD
Vocal rehearsal, Phonological short-term memory, New phonological representation retrieval, Specific language impairment
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