Haebig Eileen, Kaushanskaya Margarita, Ellis Weismer Susan
University of Wisconsin, 1500 Highland Avenue Room 449, Madison, WI, 53705, USA.
Purdue University, Lyles-Porter Hall, 715 Clinic Drive Room 3121, West Lafayette, IN, 47907, USA.
J Autism Dev Disord. 2015 Dec;45(12):4109-23. doi: 10.1007/s10803-015-2534-2.
Children with autism spectrum disorder (ASD) and specific language impairment (SLI) often have immature lexical-semantic knowledge; however, the organization of lexical-semantic knowledge is poorly understood. This study examined lexical processing in school-age children with ASD, SLI, and typical development, who were matched on receptive vocabulary. Children completed a lexical decision task, involving words with high and low semantic network sizes and nonwords. Children also completed nonverbal updating and shifting tasks. Children responded more accurately to words from high than from low semantic networks; however, follow-up analyses identified weaker semantic network effects in the SLI group. Additionally, updating and shifting abilities predicted lexical processing, demonstrating similarity in the mechanisms which underlie semantic processing in children with ASD, SLI, and typical development.
患有自闭症谱系障碍（ASD）和特定语言障碍（SLI）的儿童往往词汇语义知识不成熟；然而，人们对词汇语义知识的组织了解甚少。本研究考察了在接受性词汇量上相匹配的患有ASD、SLI和发育正常的学龄儿童的词汇加工情况。儿童完成了一项词汇判断任务，其中包括语义网络大小高和低的单词以及非单词。儿童还完成了非语言更新和转换任务。儿童对来自高语义网络的单词的反应比对来自低语义网络的单词更准确；然而，后续分析发现SLI组的语义网络效应较弱。此外，更新和转换能力预测了词汇加工，这表明患有ASD、SLI和发育正常的儿童在语义加工背后的机制上具有相似性。
