Phonetics and Speech Sciences (말소리와 음성과학)

Korean Society of Speech Sciences (한국음성학회)
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Meta-analysis of the effectiveness of speech processing analysis methods: Focus on phonological encoding, phonological short-term memory, articulation transcoding

메타분석을 통한 말 처리 분석방법의 효과 연구: 음운부호화, 음운단기기억, 조음전환을 중심으로

  • Eun-Joo Ryu (Department of Specch Pathology, Daegu University) ;
  • Ji-Wan Ha (Department of Specch Pathology, Daegu University)
  • 류은주 (대구대학교 언어치료학과) ;
  • 하지완 (대구대학교 언어치료학과)
  • Received : 2024.07.30
  • Accepted : 2024.08.31
  • Published : 2024.09.30
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Abstract

This study aimed to establish evaluation methods for the speech processing stages of phonological encoding, phonological short-term memory, and articulation transcoding from a psycholinguistic perspective. A meta-analysis of 21 studies published between 2000 and 2024, involving 1,442 participants, was conducted. Participants were divided into six groups: general, dyslexia, speech sound disorder, language delay, apraxia+aphasia, and childhood apraxia of speech. The analysis revealed effect sizes of g=.46 for phonological encoding errors, g=.57 for phonological short-term memory errors, and g=.63 for articulation transition errors. These results suggest that substitution errors, order and repetition errors, and phoneme addition and voicing substitution errors are key indicators for assessing these abilities. This study contributes to a comprehensive understanding of speech and language disorders by providing a methodological framework for evaluating speech processing stages and a detailed analysis of error characteristics. Future research should involve non-word repetition tasks across various speech and language disorder groups to further validate these methods, offering valuable data for the assessment and treatment of these disorders.

본 연구는 심리언어학적 관점에서 말 처리 단계를 음운부호화, 음운단기기억, 조음전환으로 구분하여 각 단계별 평가방법의 근간을 마련하고자 하였다. 이를 위해 2000년부터 2024년까지 발표된 연구 중 선정 기준에 따라 총 21편의 논문을 메타분석하였으며, 총 1,442명의 대상자를 포함하였다. 연구대상자는 일반집단, 난독증 집단, 말소리장애 집단, 언어지연 집단, 실행증+실어증 집단, 아동기말실행증 집단으로 구성되었다. 분석 결과, 음운부호화 오류 특성의 집단 간 차이에 대한 효과크기는 g=.46, 음운단기기억 오류 특성의 집단 간 차이에 대한 효과크기는 g=.57, 조음전환 오류 특성의 집단 간 차이에 대한 효과크기는 g=.63으로 나타났다. 이는 각각 대치 오류, 순서 및 반복 오류, 음소 첨가 및 유·무성음 간 대치 오류가 해당 능력 평가에 유용한 지표임을 시사한다. 본 연구는 말·언어장애를 다양한 시각으로 접근하는 데 기여하며, 오류 특성을 세부적으로 분석하여 말 언어장애의 원인을 보다 명확히 이해할 수 있는 방법을 제시한다. 향후 연구에서는 다양한 말·언어장애 집단을 대상으로 비단어 따라말하기 과제를 실시하고, 각 단계별 분석을 통해 심층적으로 살펴볼 필요가 있다. 이를 통해 제안된 분석 방법의 타당성을 검증하고, 말 언어장애 평가와 치료에 유용한 데이터를 제공할 수 있을 것이다.

Keywords

Acknowledgement

이 논문은 2022년 대한민국 교육부와 한국연구재단의 지원을 받아 수행된 연구임(NRT-2022S1A5B5A17045720).

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