Measuring Diversified Proficiency of Japanese Learners of English

Item Development and Scoring for Japanese Oral Proficiency Testing

This study introduces and evaluates a computerized approach to measuring Japanese L2 oral proficiency. We present a testing and scoring method that uses a type of structured speech called elicited imitation (EI) to evalu…

Penny: Transition Network Analysis of Learner-Chatbot Interactions in Scaffolded EFL Writing

Generative AI chatbots promise to transform English as a Foreign Language (EFL) writing by providing immediate, personalised feedback. However, their pedagogical value depends on how learners engage with them - a process…

Assessment of an Index for Measuring Pronunciation Difficulty

This study assesses an index for measur-ing the pronunciation difficulty of sen-tences (henceforth, pronounceability) based on the normalized edit distance from a reference sentence to a transcrip-tion of learners{'} pro…

Evaluating Prompting Strategies for Grammatical Error Correction Based on Language Proficiency

The writing examples of English language learners may be different from those of native speakers. Given that there is a significant differences in second language (L2) learners' error types by their proficiency levels, t…

Building an English Vocabulary Knowledge Dataset of Japanese English-as-a-Second-Language Learners Using Crowdsourcing