Purpose: Identifies individuals with autism and estimates the severity.
Age: 3–22 years
Time: 5–10 minutes
The Gilliam Autism Rating Scale–Third Edition (GARS-3) assists teachers, parents, and clinicians in identifying autism in individuals and estimating its severity.
Items on the GARS-3 are based on the 2013 diagnostic criteria for autism spectrum disorder (ASD) adopted by the APA and published in the Diagnostic and Statistical Manual of Mental Disorders–Fifth Edition (DSM-5).
The instrument consists of 56 clearly stated items describing the characteristic behaviours of persons with autism. The items are grouped into six subscales:
- Restrictive/Repetitive Behaviors
- Social Interaction
- Social Communication
- Emotional Responses
- Cognitive Style
- Maladaptive Speech
- Forty-four new items were added to the GARS-3
- Yields standard scores, percentile ranks, severity level, and probability of Autism
- All six subscales have been empirically determined to be valid and sensitive for identification of children with ASD
- An interpretation guide in the Examiner’s Manual allows the examiner an easy and efficient method for assessing the probability of autism spectrum disorder and the severity of the disorder
- A diagnostic validation form is included for insuring that test results meet DSM-5 criteria for autism spectrum disorder
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- A four-year psychology qualification PLUS postgraduate training in psychological tests
Examples of areas of speciality: Psychiatry, Paediatrics