SASAO, Yosuke Associate Professor
| Graduate School | Human and Environmental Studies/Language Sciences |
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| Undergraduate School | |
| Other Affiliation | Institute for Liberal Arts and Sciences |
| Personal Page | Website |
| Research areas | Foreign Language Education, Second Language Acquisition, Applied Linguistics |
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| Keywords | vocabulary acquisition, language assessment, pedagogical grammar, English for Academic Purposes |
| Themes | Research themes pursued as principal investigator of the Sasao Lab include second language acquisition, vocabulary learning, language assessment, and educational technology. My work increasingly incorporates quantitative and computational approaches, including statistical modeling, machine learning, natural language processing, and large language models. |
| Major publications | Selected recent publications Sasao, Y., & Liang, Z. (2026). New directions in vocabulary learning and teaching. In A. Tajino (Ed.), English language teaching: Current issues and future prospects I: Voices of practitioner researchers in Japan (pp. 81–94). Springer. https://doi.org/10.1007/978-981-95-6163-6_6 Mathieson, P., & Sasao, Y. (2025). Minimizing mixed-methods mix-ups: Lessons from a research project in a hybrid second language learning course. In SAGE Research Methods: Data and research literacy. SAGE Publications. https://doi.org/10.4135/9781036216306 Mathieson, P., Bolstad, F., & Sasao, Y. (2024). Developing a word family-based depth of academic word knowledge test. European Journal of English Language Studies, 4(3), 137–154. https://doi.org/10.12973/ejels.4.3.137 Zeilhofer, L., & Sasao, Y. (2022). Mindful language learning: The effects of college students’ mindfulness on short-term vocabulary retention. System, 110, 102909. https://doi.org/10.1016/j.system.2022.102909 Sasao, Y, Webb, S. (2020). The guessing from context test. In S. Webb (Ed.) Approaches to Teaching, Learning, Testing, Researching L2 Vocabulary. (pp. 117-142). Amsterdam: John Benjamins Publishing Company. Sasao, Y. (2020). Measuring the ability to learn words. In S. Webb (Ed.), The Routledge Handbook of Vocabulary Studies. (pp. 419-432). London: Routledge. Sasao, Y. (2019). Vocabulary teaching: A systemic perspective. In A. Tajino (Ed.), A Systems Approach to Language Pedagogy. (pp. 39-47). Singapore: Springer. Mizumoto, A, Sasao, Y, Webb, S. A. (2019). Developing and evaluating a computerized adaptive testing version of the Word Part Levels Test. Language Testing, 36, 1, 101-123 Sasao, Y, Webb, S. (2018). The guessing from context test. ITL – International Journal of Applied Linguistics, 169, 1, 114-140 Sasao, Y. (2018). MAP grammar and vocabulary. In A. Tajino (Ed.), A new approach to English pedagogical grammar: The order of meanings (pp.128-136). Oxford: Routledge Webb, S, Sasao, Y, Ballance, O. (2017). The updated Vocabulary Levels Test: Developing and validating two new forms of the VLT. ITL – International Journal of Applied Linguistics, 168, 1, 33-69 Yosuke Sasao, Stuart Webb. (2017). The Word Part Levels Test. Language Teaching Research, 21, 1, 12-30 |
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| Background | B.A.: Kyoto University (Faculty of Integrated Human Studies) M.A.: Kyoto University (Graduate School of Human and Environmental Studies) Ph.D.: Victoria University of Wellington, New Zealand (School of Linguistics and Applied Language Studies) Ph.D. in Applied Linguistics |
