Capturing the Diversity in Lexical Diversity
Capturing the Diversity in Lexical Diversity
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DOI：
10.1111/j.1467-9922.2012.00739.x
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发表时间：
2013-03-01
影响因子：
4.4
通讯作者：
Jarvis, Scott
中科院分区：
文献类型：
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作者：
Jarvis, Scott
学习者在语言使用中所使用的词汇的范围、种类或多样性被认为反映了他们词汇知识的复杂程度以及他们的语言水平。人们提出了许多词汇多样性指标，其中大多数涉及类型和标记之间的统计关系，并最终反映单词重复率。这些指标通常是根据它们克服样本量效应的能力和/或它们预测语言知识或行为的能力来验证的，而不是根据它们实际测量词汇多样性的能力来验证的。在这篇文章中，我回顾了词汇多样性研究的发展，并描述了阻碍其进一步发展的障碍。我比较这些发展与生态学领域的生物多样性的平行研究，并显示语言研究人员可以从生态学的建模和测量的多样性作为一个多维结构的组成复杂性。
The range, variety, or diversity of words found in learners' language use is believed to reflect the complexity of their vocabulary knowledge as well as the level of their language proficiency. Many indices of lexical diversity have been proposed, most of which involve statistical relationships between types and tokens, and which ultimately reflect the rate of word repetition. These indices have generally been validated in accordance with how well they overcome sample-size effects and/or how well they predict language knowledge or behavior, rather than in accordance with how well they actually measure the construct of lexical diversity. In this article, I review developments that have taken place in lexical diversity research, and also describe obstacles that have prevented it from advancing further. I compare these developments with parallel research on biodiversity in the field of ecology, and show what language researchers can learn from ecology regarding the modeling and measurement of diversity as a multidimensional construct of compositional complexity.