How do you read the Gilliam Autism Rating Scale?
Probability of Autism is Unlikely, Possibly, Very Likely. Note: On this tool, if the subject’s Autism Index is 85 or above, the person is very likely autistic, and if the Autism Index is 70-84, the person is possibly autistic. Autism Indexes of 69 or less indicate that the person is unlikely to be autistic.
What is the Gars rating scale?
Gilliam Autism Rating Scale | Third Edition (GARS-3) 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.
How do you interpret gars?
GARS-3 provides four levels of probability of having ASD: level 0 with an Autism Index ≤ 54, “unlikely;” level 1 with an Autism Index between 55 and 70, requiring “minimal support;” level 2 with an Autism Index between 71 and 100, “very likely” and requiring substantial support; level 3 with an Autism Index ≥ 101, “ …
What does the Gars-2 measure?
The GARS-2 relies on parental rating of directly observed behaviors and developmental history of delay or abnormality. The instrument is comprised of three subscales, namely, Stereotyped Behaviors, Communication, and Social Interaction.
How accurate is the Gilliam Autism Rating Scale?
Evidence from researchers and testers has indicated that its scores are valid and reliable. In addition, it is in line with the Autism Society’s definition of autism as well as the DSM-5. The main limitation of the GARS scale is that it can only be compared against individuals diagnosed with autism.
Is the Gars-3 valid?
All new validity studies show that the test results are valid for a wide variety of subgroups, as well as for the general population. Binary classification studies indicate that the GARS-3 is able to accurately discriminate children with autism spectrum disorder from children without autism (i.e., sensitivity = .
How accurate is the Gars-3?
Binary classification studies indicate that the GARS-3 is able to accurately discriminate children with ASD from children without (i.e., sensitivity = . 97, specificity = . 97, ROC/AUC = . 93).
Who can administer the Gilliam Autism Rating Scale?
According to the manual, the GARS-2 should be administered by professionals who have training and experience in working with individuals with autism such as school psychologists, educational diagnosticians, and autism specialists.
Who can complete Gars-3?
The normative sample collected for the GARS-3 was composed completely of individuals diagnosed with autism, meaning that individuals rated on this scale can only be compared with individuals diagnosed with autism.
How is autism scaled?
According to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), doctors categorize autism by assigning level 1, 2, or 3 to two areas of functioning: social communication and restricted, repetitive behaviors.