Uchihara Takumi

UCHIHARA, Takumi (内原 卓海), Assistant Professor

ResearchMap site : https://researchmap.jp/takumiuchihara

Personal web site : https://takumiuchihara.weebly.com/

E-mail : [tuchihar@aoni.waseda.jp]

My research interests include a wide range of topics related to second language vocabulary and speech learning. More specifically, my research programs are mainly focused on answering questions of how knowledge of spoken forms of words is learned through exposure to different types of input (e.g.., frequency, talker variability, mode of input) and how lexical and phraseological knowledge is associated with oral proficiency. I have also been involved in a number of meta-analysis projects with the aim of exploring the effectiveness of different approaches to vocabulary instruction such as incidental and intentional vocabulary learning activities.


  • Ph.D. in Education Studies and Applied Linguistics, University of Western Ontario, 2021
  • M.A. (Distinction) in English Language Teaching, University of Reading, 2015
  • B.A. in English Language and Literature, Waseda University, 2014

Current CELESE responsibilities

Administrative roles : CELESE minutes management

Courses : Academic Reading, Concept Building and Discussion

Research areas and interests

second language acquisition, vocabulary learning and teaching, pronunciation learning and teaching, High Variability Phonetic Training (HVPT), productive vocabulary assessment, English Medium Instruction (EMI), meta-analysis

Representative works

  • Uchihara, T., Webb, S., Saito, K., & Trofimovich, P. (Forthcoming). The effects of talker variability and frequency of exposure on the acquisition of spoken word knowledge. Studies in Second Language Acquisition.
  • Uchihara, T., Webb, S., & Yanagisawa, A. (2019). The effects of repetition on incidental vocabulary learning: A meta-analysis of correlational studies. Language Learning, 69(3), 559–599.
  • Uchihara, T., & Saito, K. (2019). Exploring the relationship between productive vocabulary knowledge and second language oral ability. The Language Learning Journal, 47(1), 64–75.
  • Uchihara, T., & Harada, T. (2018). Roles of vocabulary knowledge for success in English-medium instruction: Self-perceptions and academic outcomes of Japanese undergraduates. TESOL Quarterly, 52(3), 564–587.


  • Language Learning Dissertation Grant (January 2019)
  • EuroSLA Student Stipends Award (September 2018) European Second Language Association (EuroSLA), Münster, Germany
  • Excellence in Graduate Teaching Award (2017)​ Master of Professional Education (MPED) Program, Faculty of Education, Western University, London, Ontario, Canada