The study examines the Japanese EFL learnersʼ vocabulary at the elementary 1,000- to advanced 3,000-word levels, using a vocabulary estimation test. The data are analyzed according to participants’ grades, schools, and groups classified by their success rates in answering at elementary 1,000- or elementary 1,000- to intermediate 1,000-word levels. It also examines the correlation between the receptive knowledge at these levels and participants' estimated vocabulary size (EVS). The study attempts to clarify differences in the EVS among and within these groups. Results show the relatively or rather strong correlation between the receptive knowledge of these levels and participants’ EVS. There was a significant difference in the means in EVS among these groups with some exceptions. However, there is no difference in the means in EVS within these groups with some exceptions. I conclude that educators should recognize the knowledge of these basic words greatly influences studentsʼ EVS and should devise ways of teaching these words.
Hitoshi Yashima (Fri,) studied this question.
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