The following qualifications are required to purchase this product.
Restricted (R)
Please login or create a new account to register your qualifications. You can register within your account via My Profile > My Qualifications.
For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
Online Cognitive Abilities Test (CogAT) & Cognitive Abilities Test (CogAT) Screening Form
The following qualifications are required to purchase this product.
Schools (SCH)
Please login or create a new account to register your qualifications. You can register within your account via My Profile > My Qualifications.
For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
The following qualifications are required to purchase this product.
PAT Teaching Resources Centre
Please login or create a new account to register your qualifications. You can register within your account via My Profile > My Qualifications.
For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
The following qualifications are required to purchase this product.
Restricted (R)
Please login or create a new account to register your qualifications. You can register within your account via My Profile > My Qualifications.
For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
Autism Detection in Early Childhood (ADEC) 2nd Edition
The following qualifications are required to purchase this product.
Bachelor's Degree
Please login or create a new account to register your qualifications. You can register within your account via My Profile > My Qualifications.
For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
The following qualifications are required to purchase this product.
Bachelor's Degree
Please login or create a new account to register your qualifications. You can register within your account via My Profile > My Qualifications.
For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
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
Key Features
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
James E. Gilliam
The following qualifications are required to access this product. Please
login or register to proceed
Please contact ACER Customer Service on +61 3 9277 5656 if you have any queries.
Gilliam Autism Rating Scale - Third Edition (GARS-3)
The following qualifications are required to purchase this product.
Restricted (R)
Please login or create a new account to register your qualifications. You can register within your account via My Profile > My Qualifications.
For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.