SPECIFIC LANGUAGE IMPAIRMENT AND THE LEXICON

这项研究计划旨在探索 有特殊语言障碍(SLI)的幼儿的词汇。这个 研究计划的前提是：(1)词汇的产生 系统性红斑狼疮儿童的问题根源于词汇存储的缺陷； (2)SLI儿童与非SLI儿童之间的比较可用于 描述与SLI相关的词汇存储缺陷的性质 以及(3)对这些词汇存储缺陷的更全面的理解 将为词汇产生带来更有效的治疗 患有SLI的儿童。参与者是20名患有SLI的学龄前儿童，他们的 40个发育正常的年龄匹配的队列和他们的40个正常- 发展中的、更年轻的、语言匹配的群体。这些实验是 受Levelt(1991)的语音生成模型的启发，在 尤其是他对词条和词位表征与通达的概念。 具体地说，假设该引理是特别的 患有系统性红斑狼疮的儿童发育不全，这一问题可以追溯到 回到早期词汇学习中的非典型语义映射。四 设计实验是为了调查组织和详细说明 语义词汇表。第五个实验旨在确定 当SLI儿童和SLI儿童最初存储什么语义信息 他们的同龄人映射出新单词。第六个实验将测试其疗效。 旨在改善儿童词汇产出的干预措施 通过增强他们的语义知识来提高他们的学习能力。

This program of research is designed to explore the status of the lexicon in young children with specific language impairment (SLI). The research plan is based on the premises that: (1) the lexical production problems of children with SLI are rooted in deficits in lexical storage; (2) comparisons between children with and without SLI can be used to characterize the nature of lexical storage deficits associated with SLI and (3) a more complete understanding of these lexical storage deficits will lead to more efficacious treatment for lexical production in children with SLI. Participants are 20 preschoolers who have SLI, their 40 normally-developing age-matched cohorts and their 40 normally- developing, younger, language-matched cohorts. These experiments are motivated by Levelt's (1991) speech production model, and, in particular, his notion of lemma and lexeme representation and access. Specifically, it is hypothesized that the lemma is particularly underdeveloped in children with SLI and that this proble may be traced back to atypical semantic mapping during early word learning. Four experiments are designed to investigate the organization and elaboration of the semantic lexicon. A fifth experiment is designed to determine what semantic information is initially stored when children with SLI and their cohorts map new words. A sixth experiment will test the efficacy of intervention aimed at improving lexical production for children with SLI by enhancing their semantic knowledge.