Indices of lexical diversity have been used to estimate the size of a writer's vocabulary and/or a writer's lexical proficiency for some time. One issue with many commonly used indices of lexical diversity (e.g., TTR and index) is that they vary as a function of text length. Accordingly, much research has been devoted to the development of indices…

The purpose of this study is to investigate the developmental writing patterns of English as a foreign language (EFL) students across different score levels through a TOEFL Junior® writing task. The sample of this study comprised 2,016 young adolescent EFL students, ranging from 10 to 15 years old, who took the TOEFL Junior test. We performed a…

This study has two research purposes related to L2 writing development. The first aim of this study is to explore how L2 learners receiving intensive ESL instruction develop their writing proficiency (writing quality from an analytic rubric) across two writing tasks (narrative and argumentative writing) over one semester. Limiting its focus to…