SPECIFIC LANGUAGE IMPAIRMENT AND THE LEXICON

特定语言障碍和词汇

• 批准号: 2593435
• 负责人: Karla McGregor
• 金额: $ 10.36万
• 依托单位: NORTHWESTERN UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 2003-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2593435
• 关键词: behavioral /social science research tag; clinical research; education evaluation /planning; human subject; preschool child (1-5); psychological models; remedial /special education; semantics

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.

该研究计划旨在探讨 具有特定语言障碍的幼儿词典（SLI）。 这 研究计划基于以下前提：（1）词汇生产 SLI儿童的问题根植于词汇存储中的缺陷； （2）可以使用和没有SLI的儿童之间的比较 表征与SLI相关的词汇存储缺陷的性质 （3）对这些词汇存储缺陷的更完整理解 将导致更有效的词汇生产治疗 儿童SLI。 参与者是20名患有SLI的学龄前儿童 40个通常是成熟的年龄匹配的队列及其40个通常的人 - 发展，年轻，语言匹配的队列。 这些实验是 由Levelt（1991）的语音生产模型的动机，以及 特别是他对引理和雷克斯表示和访问的概念。 具体而言，假设引理特别是 在患有SLI的儿童中发育不足，并且可能会追溯 回到早期单词学习期间非典型语义映射。 四个 实验旨在调查组织和阐述 语义词典。 第五实验旨在确定 当患有SLI和SLI的孩子和 他们的同伙绘制新单词。 第六个实验将测试功效 旨在改善患有儿童的词汇生产的干预措施 通过增强他们的语义知识来SLI。