Roles of Vocabulary Knowledge for Success in English-Medium Instruction: Self-Perceptions and Academic Outcomes of Japanese Undergraduates

Takumi Uchihara, Tetsuo Harada

    Research output: Contribution to journalArticle

    Abstract

    This study investigated the relationship between vocabulary knowledge (written and aural receptive vocabulary size and self-rating of vocabulary knowledge) and self-perceptions of four language skills (reading, listening, writing, speaking) targeting undergraduate students in English-medium instruction (EMI) courses in Japan. The students’ academic performance (course grades and quiz scores) was also compared to their vocabulary knowledge. Results showed that learners with larger aural vocabulary sizes were more confident in spoken language use, and those who self-rated higher on their vocabulary knowledge were more likely to perceive themselves as proficient in productive language skills. Interestingly, learners with larger written vocabulary sizes tended to perceive themselves as less proficient in performing EMI tasks. Results also showed that none of the vocabulary measures were significantly associated with academic outcomes. Interview data suggest that EMI students’ performance could be affected by the complex interplay of various factors, though not necessarily a large vocabulary size alone. Based on these findings, implications are discussed in terms of teaching and assessing vocabulary knowledge in EMI courses.

    Original languageEnglish
    Pages (from-to)564-587
    Number of pages24
    JournalTESOL Quarterly
    Volume52
    Issue number3
    DOIs
    Publication statusPublished - 2018 Sep 1

    Fingerprint

    self-image
    vocabulary
    instruction
    Self-perception
    Vocabulary Knowledge
    English Medium
    Undergraduate
    Vocabulary Size
    student
    quiz
    spoken language
    language
    performance
    speaking
    rating
    Japan
    Aural
    Language Skills
    Teaching
    interview

    ASJC Scopus subject areas

    • Education
    • Language and Linguistics
    • Linguistics and Language

    Cite this

    Roles of Vocabulary Knowledge for Success in English-Medium Instruction : Self-Perceptions and Academic Outcomes of Japanese Undergraduates. / Uchihara, Takumi; Harada, Tetsuo.

    In: TESOL Quarterly, Vol. 52, No. 3, 01.09.2018, p. 564-587.

    Research output: Contribution to journalArticle

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