Grapheme-to-Phoneme Conversion Regularity Effects among Late Korean-English Bilinguals

후기 한국어-영어 이중언어화자의 자소-음소 변환 규칙에 따른 영어 규칙성 효과

  • Kim, Dahee (Department of Psychology, Korea University) ;
  • Baik, Yeonji (Department of Psychology, Korea University) ;
  • Ryu, Jaehee (Department of Psychology, Korea University) ;
  • Nam, Kichun (Department of Psychology, Korea University)
  • Received : 2015.02.11
  • Accepted : 2015.09.21
  • Published : 2015.09.30

Abstract

This study examined grapheme-to-phoneme regularity effect among late Korean-English bilinguals by using whole word level task (lexical processing) and two meta-phonological tasks(sub-lexical processing): [1] English word naming task(whole word level), [2] rhyme judgement task(rhyme level), and [3] phoneme deletion task(phoneme level). Forty-three late Korean-English bilinguals participated in all three tasks. In these tasks, participants showed better performance in regular word conditions compared to irregular word conditions, demonstrating a clear English regularity effect. Post-hoc correlational analysis revealed strong correlation between word naming task and rhyme judgement task, which is different from the results reported with English monolinguals. The contradicting results might be due to the relevantly low English proficiency level among late Korean-English bilingual speakers. In conclusion, this study suggests that late Korean-English bilinguals make use of L2 grapheme-to-phoneme conversion (GPC) rule when reading L2 English words.

후기 한국어-영어 이중언어화자의 자소-음소 변환규칙(grapheme to phoneme conversion rule, GPC 규칙)에 따른 영어 규칙성 효과(regularity effect)가 단어수준과 하위단어수준에서 나타나는지 알아보기 위해 단어명명과제, 각운판단과제, 음소제거과제를 진행하였다. 전체 단어수준(whole word level)에서의 규칙 양상을 살펴보기 위해, [1] 영어단어명명과제(English word naming task)를 사용하였고, 단어 단위보다 하위 단계에서의 규칙성 효과를 알아보기 위해 [2] 라임판단 과제(rhyme judgement task)와 음소수준(phoneme level)에서의 과제인 [3] 음소탈락과제(phoneme deletion task)를 사용하였다. 실험 참가자들은 세 종류의 과제를 모두 수행하였고, 총 43명의 후기 이중언어화자가 실험에 참가하였다. 실험결과, 세 과제 모두에서 규칙성 효과가 나타나 한국어-영어 이중언어화자가 영어(L2) 단어 처리 시 GPC 규칙을 적극적으로 활용하고 있다는 사실을 확인하였다. 사후분석으로써 세 과제 사이의 상관분석을 진행한 결과, 단어명명과제와 라임판단과제 간 상관이 가장 높게 나타났다. 비록 영어 모국어 화자의 이전 연구결과와는 달리 라임판단과제와 단어읽기과제 간 상관이 높게 나타났지만, 이는 실험 참가자의 L2 능숙도가 모국어화자만큼 높지 않았기 때문인 것으로 보인다. 본 연구는 후기 한국어-영어 이중언어화자가 영어 GPC 규칙을 사용하여 영어단어읽기 처리를 하고 있음을 확인하였다.

Keywords

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