Autism Treatment Evaluation Checklist (ATEC)
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Studies confirm validity of ATEC - updated 2018
Interpreting Scores/Statistical Analysis
ARI’s Autism Treatment Evaluation Checklist (ATEC): Its Development and Application


Take the ATEC online

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About the ATEC

A major obstacle in autism research has been the lack of a valid means of measuring the effectiveness of various treatments. Over the years, researchers have published hundreds of studies attempting to evaluate different biomedical and psycho-educational interventions intended to benefit autistic children. Much of this research has produced inconclusive or, worse, misleading results, because there are no useful tests or scales designed to measure treatment effectiveness. Lacking such a scale, researchers have resorted to using scales such as the Childhood Autism Rating Scale (CARS), the Gilliam Autism Rating Scale (GARS), or the Autism Behavior Checklist (ABC), all of which were designed to diagnose autism- to tell whether or not a child is autistic--and not to measure treatment effectiveness.

The Autism Treatment Evaluation Checklist (ATEC) was developed by Bernard Rimland and Stephen M. Edelson of the Autism Research Institute, to fill this need.

The ATEC is a one-page form designed to be completed by parents, teachers, or caretakers. It consists of 4 subtests: I. Speech/Language Communication (14 items); II. Sociability (20 items); III. Sensory/ Cognitive Awareness (18 items); and IV. Health/Physical/Behavior (25 items).

Copyright (c) 2016 Stephen M. Edelson



Users of the ATEC may have it scored free (4 subscores and a total score) by entering the responses via computer to the ATEC form on the website for immediate and free-of-cost scoring. ATEC forms are only accepted online


 The ATEC is not a diagnostic checklist. It basically provides several subscale scores as well as a total score to be used for comparison at a later date. Basically, the lower the score, the fewer the problems.

Thus, if a person scores a '20' on one day, and then a '15' two weeks later, then the individual showed improvement. In contrast, if the score was '30,' then the individual's behavior worsened.

Many parents and teachers use the ATEC to monitor how well the child is doing over time.  In addition, researchers have used the ATEC to document improvement following an intervention by comparing the baseline ATEC scores with the post-treatment ATEC scores.

You can learn more about interpreting the ATEC scores at:


HIPAA Notice

If you are a practitioner, or you work for a practitioner, please make sure you comply with HIPAA and applicable state privacy regulations before placing your client's or patient's personal health information into this database. If you are unsure about such compliance, please seek advice from an attorney. In most cases a consent form, agreed upon and signed by your patient/client, is necessary. View a sample HIPAA consent form. ARI in no way intends to warrant or represent that this consent form is legally sufficient for every factual situation, so please consult with an attorney to determine how to comply with HIPAA and other applicable state privacy regulations in your practice.

ATEC in English

ATEC en Español

Italiano ATEC

ATEC en Français


Português ATEC

Deutsch ATEC

 Документы на русском языке (ATEC)

Scala de Evaluare a Tratamentelor în Autism (ATEC)

Autismi Ravi Hindamise Kontrollnimekiri (ATEC)

Dotazník pro posouzení léčby autism (ATEC)

Test Efektivnosti Lečenja Autizma (ATEC)

Lista e Vlerësimit të Trajtimit të Autizmit (ATEC)

ATEC in het Nederlands

שאלון הערכה של הטיפול באוטיזם (ATEC)

آزمون ارزيابی درمان اوتیسم(ATEC)

قائمة تقييم علاج التوحد (ATEC)

ATEC (Polski)

Λίστα αξιολόγησης της θεραπευτικής παρέμβασης στον  αυτισμό(ATEC)