BACKGROUND Problems with communication and language are among the main characteristics of both Autism Spectrum Disorder (ASD) and Specific Language Impairment (SLI). The main objective of the present study was to analyze whether the two disorders have similar formal language profiles. METHOD The study involved three groups of 20 students each, divided into ASD, SLI, and Control, of similar ages and IQ. The CELF-4 standardized test was administered to assess their language skills. RESULTS No significant differences in language were found between the SLI and ASD groups, with no effect sizes. Differences were observed between the SLI and ASD groups when they were compared separately with the Control group, with a large effect size. CONCLUSIONS There is an overlap in the linguistic profiles of children with SLI and children with ASD. Similarity is thus confirmed in comprehensive and expressive language, as well as in morphosyntactic and lexical-semantic production.

中文翻译：

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自闭症谱系障碍和特定语言障碍的语言表型比较研究。

背景技术交流和语言问题是自闭症谱系障碍（ASD）和特定语言障碍（SLI）的主要特征之一。本研究的主要目的是分析两种疾病是否具有相似的正式语言特征。方法该研究分为三组，每组20名学生，分别分为年龄和智商相似的ASD，SLI和对照组。进行了CELF-4标准化考试，以评估他们的语言能力。结果SLI和ASD组之间在语言上没有显着差异，并且没有影响大小。当分别将SLI和ASD组与对照组进行比较时，观察到差异，且效果较大。结论SLI儿童和ASD儿童的语言特征存在重叠。