Linguistic Factors Affecting Evaluation of L2 Korean Speech Proficiency

Seung Hee Yang, Minhwa Chung


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 the validity of this finding across different L1 backgrounds. 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.


 DOI: 10.21437/SLaTE.2017-10

Cite as: Yang, S.H., Chung, M. (2017) Linguistic Factors Affecting Evaluation of L2 Korean Speech Proficiency. Proc. 7th ISCA Workshop on Speech and Language Technology in Education, 53-58, DOI: 10.21437/SLaTE.2017-10.


@inproceedings{Yang2017,
  author={Seung Hee Yang and Minhwa Chung},
  title={ Linguistic Factors Affecting Evaluation of L2 Korean Speech Proficiency},
  year=2017,
  booktitle={Proc. 7th ISCA Workshop on Speech and Language Technology in Education},
  pages={53--58},
  doi={10.21437/SLaTE.2017-10},
  url={http://dx.doi.org/10.21437/SLaTE.2017-10}
}