Evaluating Korean learners' English rhythm proficiency with measures of sentence stress

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Previous research has suggested that the production of speech rhythm in a second language (L2) or foreign language is influenced by the speaker's first language rhythm. However, it is less clear how the production of L2 rhythm is affected by the learners' L2 proficiency, largely due to the lack of rhythm metrics that show consistent results between studies. We examined the production of English rhythm by 75 Korean learners with the rhythm metrics proposed in previous studies (pairwise variability indices and interval measures). We also devised new sentence stress measures (i.e., accentuation rate and accentuation error rate) and investigated whether these new measures can quantify rhythmic differences between the learners. The results found no rhythm metric that significantly correlated with proficiency in the expected direction. In contrast, we found a significant correlation between the learners' proficiency levels and both measures of sentence stress, showing that less-proficient learners placed sentence stress on more words and made more sentence stress errors. This demonstrates that our measures of sentence stress can be used as effective features for assessing Korean learners' English rhythm proficiency.
Publisher
CAMBRIDGE UNIV PRESS
Issue Date
2019-11
Language
English
Article Type
Article
Citation

APPLIED PSYCHOLINGUISTICS, v.40, no.6, pp.1363 - 1376

ISSN
0142-7164
DOI
10.1017/S0142716419000298
URI
http://hdl.handle.net/10203/285639
Appears in Collection
HSS-Journal Papers(저널논문)
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