The Autism Treatment Evaluation Scale (ATEC) is a 77-item diagnostic assessment tool that was developed by Bernard Rimland and Stephen Edelson at the Autism Research Institute. The ATEC was originally designed to evaluate the effectiveness of autism treatments, but it may also be beneficial as a screening tool for children. The questionnaire, which is completed by a parent, takes about 10–15 minutes to complete and is designed for use with children ages 5–12. The ATEC is currently available in 17 different languages.
Several research studies support the ATEC as a reliable and valid instrument in the assessment of children’s autism symptoms and improvements. ATEC’s subscale measurements of behavior, cognitive awareness, and communication correlated significantly with other standardized measures of the same characteristics. Research has also found the ATEC to be successful in measuring interventional effects as well as tracking behavioral development over periods of time. However, studies analyzing the cross-cultural validity of the ATEC have yielded mixed results.
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