Developmental trends in lexical diversity
Developmental trends in lexical diversity
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DOI：
10.1093/applin/25.2.220
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发表时间：
2004-06-01
影响因子：
3.6
通讯作者：
Chipere, N
中科院分区：
文献类型：
--
作者：
Durán, P;Malvern, D;Chipere, N
本文讨论了测量词汇多样性的问题，然后概述了一种基于数学模型的方法，该方法产生了一种旨在解决这些问题的测量方法D。本文介绍了使用软件(VORD)直接从成绩单中获取D值的步骤，并将其应用于布里斯托尔语言发展研究(Wells 1985)的32名10个不同年龄段的儿童。结果显示，这些母语为英语的儿童在18至42个月和5岁之间的平均分数和范围都有显著的发展趋势。通过对学术写作词汇多样性的分析，说明了D取值范围扩大的意义，并以具体的语言障碍、形态发展和外语/第二语言学习为例说明了D的更广泛的应用。
This article discusses issues in measuring lexical diversity, before outlining an approach based on mathematical modelling that produces a measure, D, designed to address these problems. The procedure for obtaining values for D directly from transcripts using software (vocd) is introduced, and then applied to thirty-two children from the Bristol Study of Language Development (Wells 1985) at ten different ages. A significant developmental trend is shown for D and an indication is given of the average scores and ranges to be expected between the ages of 18 and 42 months and at 5 years for these L1 English speakers. The meaning attributable to further ranges of values for D is illustrated by analysing the lexical diversity of academic writing, and its wider application is demonstrated with examples from specific language impairment, morphological development, and foreign/second language learning.