Yongkook Won

PhD in Applied Linguistics: Automated Language Assessment, Performance Language Assessment, Text Analytics

  • Instructor of English Education and Big Data and Language Assessment Using AI courses for graduate students at the International Graduate School of Language Education.
  • Primary research area : Fairness in language testing, automated essay/speech assessment, AI-assisted language Learning.

Education

  • PhD in Applied Linguistics (Language Assessment), Iowa State University, Ames, IA, USA.
  • BS in Information Statistics, Korea National Open University, Seoul, Korea.
  • BA in Law, Korea National Open University, Seoul, Korea.

Publications

Articles
  • Won, Y. (2025). Assessing the efficacy of word error rate as a proxy for pronunciation quality: A comparative study of ASR systems and human evaluations among young EFL learners. Journal of Second Language Pronunciation, 11(3), 394-422. (SCOPUS) (Supplementary Materials) (2025.12.01)
  • Won, Y. (2025). The impact of functional load and phoneme position on automated pronunciation assessment in young Korean EFL learners. System, 133, 103794. (SSCI) (Supplementary Materials) (2025.08.02)
  • Won, Y., & Kim, S. (2025). Investigating the impact of interlocutor type on English oral proficiency interviews: A comparative analysis of chatbot and human interlocutors. Korean Journal of English Language and Linguistics, 25, 661-685. (SCOPUS) (2025.05.13)
  • Kim, Y. & Won, Y. (2025). 빅데이터 분석 기법을 활용한 영어교육 관련 언론 기사 분석 [Analysis of English education-related news articles using big data analysis techniques]. Journal of the Korea Contents Association, 25(4), 49-58. (KCI) (2025.04.02)
  • Kim, Y. & Won, Y. (2024). 국내 학술지 영어교육 논문의 주제 분석 [An analysis of the topics of English education articles published in Korean scholarly journals]. Journal of the Korea Contents Association, 24(4), 519-530. (KCI) (2024.04.12)
  • Won, Y. (2023). Applicability of fine-tuned ChatGPT to automated essay scoring. English Language Assessment, 18(2), 11-35. (KCI) (Supplementary Materials) (2023.12.01)
  • Won, Y., & Kim, S. (2023). The impact of topic selection on lexico-grammatical errors and scores in English oral proficiency interviews of Korean college students. Education Sciences, 13(7), 695. (SCOPUS) (2023.07.09)
  • Kim, S., Ryu, N., & Won, Y. (2021). 웹 기반 프랑스어 음소 지각 훈련과 그 신뢰도 평가 [Reliability of web-based French phoneme perception test]. Journal of Digital Contents Society, 22(12), 2099-2109. (KCI) (2021.12.31)
  • Kim, S., Kim, H., Lee, Y., Kim, B., Won, Y., & Kim, B. (2021). Designing a large recording script for open-domain English speech synthesis. Phonetics and Speech Sciences, 13(3), 65-70. (KCI) (2021.09.30)
  • Won, Y. (2021). Differential use of reporting verbs in academic papers and personal blogs. English Language & Literature Teaching, 27(3), 89-107. (KCI) (2021.09.04)
  • Won, Y., & Kim, Y. (2021). 토픽 모델링을 활용한 한국 영어교육 학술지에 나타난 연구동향 분석 [Analysis of research trends in Korean English education journals using topic modeling]. Journal of the Korea Contents Association, 21(4), 50-59. (KCI) (2021.04.28)
  • Won, Y. (2020). The influence of raters’ topic familiarity on rater severity in a teaching simulation test for international teaching assistants. English Language Assessment, 15(2), 235-254. (KCI) (2020.12.06)
  • Won, Y. (2020). The effect of task complexity on test-takers’ performance in a performance-based L2 oral communication test for international teaching assistants. Journal of the Korea English Education Society, 19(1), 27-52. (KCI) (2020.02.17)
  • Won, Y. (2019). The prediction of writing scores using vocabulary features in ESL university students’ essays. Modern English Education, 20(4), 31-40. (KCI) (2019.11.08)
Book Chapter
  • 김주혜, 김영우, 박광현, 안현기, 원용국, 최정혜. (2022). 인공지능기술 활용 언어교육 [AI Technology for Language Education], 교육과학사. (출판사) (2022.02.20)
Research Reports
  • Kang, O.k Hirschi, K., Miao, Y., Ahn, H., & Won, Y. (2022). Test-takers’ IELTS preparations, their attitudes towards IELTS practices, and the use of technologies in the global pandemic. IELTS Research Reports Online Series, No. 2/22. British Council, Cambridge Assessment English and IDP: IELTS Australia. Available at (IELTS)
Grants
  • National Research Foundation of Korea Grant (PI). A study on the developmental stages of elementary schooler’ English speaking proficiency for the development of an automated speech scoring system. 2022-2027. (KRW 200,000,000; About USD 136,000)
  • National Research Foundation of Korea Grant (PhD researcher). A study on English speaking assessment and feedback method for adaptive language learning using voice chatbot. 2021-2023. (KRW 80,000,000; About USD 55,000)
  • National Research Foundation of Korea Grant (PI). Application of machine learning algorithms into the development of automated essay scoring and feedback systems. 2021-2022. (KRW 200,000,000; About USD 9,500)

Teaching

  • Introduction to Corpus Linguistics, Fall 2025, International Graduate School of Language Education, Seoul, S. Korea.
  • Language Assessment Using AI, Spring 2023 - Fall 2025, International Graduate School of Language Education, Seoul, S. Korea.
  • AI and Language Education, Fall 2022 - Fall 2025, Korea Cyber University, Seoul, S. Korea.
  • Research Methods & Data Coding, Fall 2022 - Fall 2025, International Graduate School of Language Education, Seoul, S. Korea.
  • English Education & Big Data, Fall 2021 - Fall 2024, International Graduate School of Language Education, Seoul, S. Korea. (강의계획서)
  • AI-based Language Education, Fall 2022, Seoul National University, Seoul, S. Korea.
  • Academic English for Graduate Students, Fall 2015 - Spring 2019. Iowa State University, Ames, IA, USA.
  • Academic English for Undergraduate Students, Fall 2013 - Spring 2015. Iowa State University, Ames, IA, USA.

Workshops