Gilliam Autism Rating Scale (GARS-3) Summary/Response Forms


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Ages: 3 through 22, Testing Time: 5 to 10 minutes, Administration: Individual

The Gilliam Autism Rating Scale, for the assessment of Autism Spectrum Disorder in the world. The GARS-3 assists teachers, parents, and clinicians in identifying autism in individuals and estimating its severity. GARS-3 yields standard scores, percentile ranks, severity level, and probability of Autism.

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 Behaviours, Social Interaction, Social Communication, Emotional Responses, Cognitive Style, and Maladaptive Speech.