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| Checklist for Autism in Toddlers ： ウィキペディア英語版 |
Checklist for Autism in Toddlers
The Checklist for Autism in Toddlers (CHAT) is a psychological questionnaire designed to evaluate risk for autism spectrum disorder in children ages 18–24 months. The 14-question test is filled out by the parent and a pediatrician or physician and takes approximately 5 minutes to complete.〔 The CHAT has shown good reliability and validity in assessing child autism risk in recent studies.〔〔〔 Some research has identified barriers, such as socioeconomic status and parent education level, to the validation of both the CHAT and the Modified Checklist for Autism in Toddlers (M-CHAT) as a reliable and valid screener for children of all backgrounds.〔
== History and Development ==
The CHAT was initially developed in the early 1990's to screen for autism in children as young as 18 months. Prior to this point, diagnosis of autism was rare in children younger than 3 years old.〔 Additionally, no specialized screening tool had been developed to detect early signs of autism in young children.〔 This clinical standard for the diagnosis of autism was seen as potentially detrimental because interventional supports early on in life had shown improved outcomes in development.〔 The construction of the CHAT drew off of the theoretical basis that certain developmental markers are rarely seen in individuals with autism, yet these behaviors are often demonstrated in typical development by 15 months of age, and therefore the absence of these behaviors could indicate a potential autism diagnosis at an early age.〔 Specifically, the CHAT aims to distinguish the presence of joint attention and pretend play.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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