Native Language and Dialect

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Naismith et al. (2018) [pdf]

  • a model that measures L2 learners’ lexical sophistication with the frequency list based on the native speaker corpora
  • Arabic-speaking learners are rated systematically lower across all levels of English proficiency than speakers of Chinese, Japanese, Korean, and Spanish.
  • Level 5 Arabic-speaking learners are unfairly evaluated to have similar level of lexical sophistication as Level 4 learners from China, Japan, Korean and Spain .
  • When used on ETS corpus, “high”-labeled essays by Japanese-speaking learners are rated significantly lower in lexical sophistication than Arabic, Japanese, Korean and Spanish peers.


Loukina et al. (2019) [pdf]

  • Models providing automated speech scores on English language proficiency assessment
  • L1-specific model trained on the speaker’s native language was the least fair, especially for Chinese, Japanese, and Korean speakers, but not for German speakers
  • All models (Baseline, Fair feature subset, L1-specific) performed disadvantageously for Japanese speakers