Spoken and Written Vocabulary in High-stakes Assessments: The Impact of Lexical Choices at Different IELTS Proficiency Levels.

语料库分析已经在两次国际会议上发表了演讲，发表了一篇论文和一篇博士论文。我们目前的发现是，词汇多样性(LD)测量可以预测手写作文的雅思成绩，但口语成绩的词汇多样性并不能预测雅思的成绩。此外，在计算单词时，如果将单词算作词条、语素或词族，也会有所不同。

The corpus analysis has led to talks at 2 international conferences, a published paper and a PhD thesis. Our current findings are that Lexical Diversity (LD) measures predict the IELTS bands of hand-marked essays, but the LD of spoken transcripts do not predict IELTS bands. Also, when counting words, it makes a difference if you count words as lemmas, flemmas or word families.