Research suggests that people with a Williams syndrome (WS) or Down syndrome (DS) diagnosis display an increased prevalence of autism spectrum disorder (ASD) when compared to the general population. This study aimed to examine characteristics of ASD in a group of children with DS or WS. Results suggest that children with DS and WS exhibit higher levels of autism symptoms than the general population, particularly in the area of unusual behaviors, and that these elevations are not solely due to deficits in adaptive behavior. There are many possible explanations for these elevations, such as issues with measurement, etiological overlap, or similar behavioral phenotypes. More research is needed to further our understanding of the overlap of ASD symptoms in these populations.

中文翻译：

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唐氏综合症和威廉姆斯综合症患儿自闭症谱系障碍的症状。

研究表明，与普通人群相比，患有威廉姆斯综合征（WS）或唐氏综合征（DS）的人显示出自闭症谱系障碍（ASD）患病率增加。这项研究旨在检查一组DS或WS儿童的ASD特征。结果表明，DS和WS儿童表现出比普通人群更高的自闭症症状，特别是在异常行为方面，并且这些升高不仅是由于适应行为的缺陷所致。这些升高有许多可能的解释，例如测量问题，病因重叠或类似的行为表型。需要更多的研究来进一步了解这些人群中ASD症状的重叠。