Phonetics and Speech Sciences (말소리와 음성과학)

Korean Society of Speech Sciences (한국음성학회)
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Correlation analysis of linguistic factors in non-native Korean speech and proficiency evaluation

비원어민 한국어 말하기 숙련도 평가와 평가항목의 상관관계

  • 양승희 (서울대학교 협동과정 인지과학전공) ;
  • 정민화 (서울대학교 언어학과 (협동과정 인지과학전공))
  • Received : 2017.08.06
  • Accepted : 2017.09.14
  • Published : 2017.09.30
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Abstract

Much research attention has been directed to identify how native speakers perceive non-native speakers' oral proficiency. To investigate the generalizability of previous findings, this study examined segmental, phonological, accentual, and temporal correlates of native speakers' evaluation of L2 Korean proficiency produced by learners with various levels and nationalities. Our experiment results show that proficiency ratings by native speakers significantly correlate not only with rate of speech, but also with the segmental accuracies. The influence of segmental errors has the highest correlation with the proficiency of L2 Korean speech. We further verified this finding within substitution, deletion, insertion error rates. Although phonological accuracy was expected to be highly correlated with the proficiency score, it was the least influential measure. Another new finding in this study is that the role of pitch and accent has been underemphasized so far in the non-native Korean speech perception studies. This work will serve as the groundwork for the development of automatic assessment module in Korean CAPT system.

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References

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