抄録
This study aims to clarify the characteristics and differences in the breadth of vocabulary knowledge required for listening comprehension in each grade of the Eiken in terms of lexical diversity, frequency, and difficulty. Each sample in this study was derived from ten past tests. The results showed that lexical diversity and frequency tended to be higher in more advanced grades with a marked difference between Grade Pre 1 and Grade 2. Vocabulary difficulty was closely related to the overall difficulty of each grade, increasing gradually from lower to higher levels. Additionally, both the frequency and difficulty of vocabulary varied significantly across different sections of the listening test in all grades In contrast, there were no differences in lexical diversity among these sections in any of the grades.
