Overview
The Gilliam Autism Rating Scale, now in its third edition, is one of the most widely used instruments for the assessment of Autism Spectrum Disorder in the world
Suitable for
Suitable for use with ages 3 to 22 years.
Product Description
The Gilliam Autism Rating Scale, now in its third edition, is one of the most widely used instruments 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. Items on the GARS 3 are based on the 2013 diagnostic criteria for autism spectrum disorder adopted by the APA and published in the DSM-5. The GARS 3 yields standard scores, percentile ranks, severity level, and probability of Autism.
The instrument consists of 56 clearly stated items describing the characteristic behaviors of persons with autism. The items are grouped into six subscales: Restrictive/Repetitive Behaviors, Social Interaction, Social Communication, Emotional Responses, Cognitive Style, and Maladaptive Speech.
Features of the GARS 3
- Items and subscales reflect DSM-5 diagnostic criteria for Autism Spectrum Disorder.
- All six subscales have been empirically determined to be valid and sensitive for identification of children with ASD.
- Normative data (N = 1,859) were collected in 2010 and 2011.
- Demographic characteristics of the normative sample are keyed to those reported by US Bureau of the Census, 2011.
- 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.
Reliability
Internal consistency (content sampling) reliability coefficients for the subscales exceed .85 and the Autism Indexes exceed .93. - Test-retest (time sampling) reliability coefficients exceed .80 for subscales and .90 for the Autism Indexes.
Norms
Normative data (N = 1,859) were collected in 2010 and 2011. - Demographic characteristics of the normative sample are keyed to those reported by US Bureau of the Census, 2011.
Duration
5 to 10 minutes
Release Note
2014
