抄録
This study examines the correlation between motivation, vocabulary learning strategies, and vocabulary knowledge in Japanese university-level learners of English as a foreign language (EFL). The participants, a total of 93, completed questionnaires to assess their motivation levels, vocabulary learning strategies, and vocabulary size test. The correlation analysis revealed that higher levels of intrinsic and identified motivation were associated with vocabulary knowledge. In contrast, external motivation was found to have a significantly negative relationship with vocabulary knowledge. The study also revealed an association between vocabulary knowledge and the use of determination and self-management strategies. Intrinsic and identified motivation showed a moderate or weak correlation with the use of self-management strategies, while external motivation displayed a significant negative correlation with them. The regression analysis indicated that vocabulary knowledge was significantly predicted only by intrinsic motivation. These findings highlight the importance of intrinsic motivation and effective vocabulary learning strategies in improving the acquisition of vocabulary for Japanese EFL learners.