Department of Experimental Psychology, University of Oxford, , South Parks Road, Oxford OX1 3UD, UK.
Philos Trans R Soc Lond B Biol Sci. 2013 Dec 9;369(1634):20120387. doi: 10.1098/rstb.2012.0387. Print 2014.
Lexical skills are a crucial component of language comprehension and production. This paper reviews evidence for lexical-level deficits in children and young people with developmental language impairment (LI). Across a range of tasks, LI is associated with reduced vocabulary knowledge in terms of both breadth and depth and difficulty with learning and retaining new words; evidence is emerging from on-line tasks to suggest that low levels of language skill are associated with differences in lexical competition in spoken word recognition. The role of lexical deficits in understanding the nature of LI is also discussed.
词汇技能是语言理解和产生的关键组成部分。本文综述了发育性语言障碍（LI）儿童和青少年在词汇层面缺陷的证据。在一系列任务中，LI 与词汇量知识的广度和深度都有关，并且在学习和记忆新单词方面存在困难；来自在线任务的证据表明，语言技能水平低与口语词汇识别中的词汇竞争差异有关。本文还讨论了词汇缺陷在理解 LI 本质中的作用。
