The Effect of Vocal Rehearsal on Retrieval of New Phonological Representations in Children with and without Specific Language Impairment

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.

Effects of Vocal Rehearsal and Auditory Input Enhancement on Delayed Nonword Repetition Performance in Children with and without Speech Sound Disorders

“…음운기억은 숫자, 단어, 문장, 비단어 따라말하기 방법으로 측정 될 수 있다 (Cho & Seo, 2004 (Baddeley, Gathercole, & Papagno, 1998 (Lee, Ha, Koo, Hwang, & Pyun, 2016 (Brookshire, 2007), 실험 상황에서 시연은 제시된 항목을 반복 하여 능동적으로 되뇌이는 것 (Moon, 1994) (Baddeley, 2000), 후자의 경우는 대부분 의식적으로 소리 내어 되뇌이는 외현적 활동(vocal rehearsal)으로 설명된다 (Alt & Spaulding, 2011 (Baddeley, 1986(Baddeley, , 2000, 실험 연구의 경우 실험방법의 용이성 또는 객관성 등을 이유 로 의식적인 외현적 시연에 주로 초점을 두고 있으며, 아동을 대상 으로 한 경우는 특히 더 그러하다 (Alt & Spaulding, 2011;Ryu & Ha, 2016 (Fletcher & Bray, 1996 (Alt & Spaulding, 2011;Ryu & Ha, 2016 (Bishop & Adams, 1990;Catts, 1993), 혹은 TD 아동보다 떨어진다는 연구 (Lee & Ha, 2018) Values are presented as mean (SD).…”