Sign In   
Sign In        


Gilliam Autism Rating Scale,Third Edition

James E. Gilliam, PhD

Helps you identify and diagnose autism
Paper and pencil
Age range:
3 years to 22 years
5–10 minutes
Qualification level:
A degree from an accredited 4-year college or university in psychology, counseling, speech-language pathology, or a closely related field plus satisfactory completion of coursework in test interpretation, psychometrics and measurement theory, educational statistics, or a closely related area; or license or certification from an agency that requires appropriate training and experience in the ethical and competent use of psychological tests. Close

Widely Used Autism Test in Children and Young Adults


One of the most widely used instruments for the assessment of autism spectrum disorder (ASD) in the world, the GARS assists teachers, parents, and clinicians in identifying ASD in individuals and estimating its severity.

Features and benefits

  • Items and subscales reflect DSM-5 diagnostic criteria for ASD.
  • Items are grouped into three subscales—Stereotyped Behaviors, Communication, and Social Interaction.


Online Scoring and Report System

Access to the GARS-3 Online Scoring and Report System is included with the purchase of each GARS-3 Complete Kit and with the purchase of every replacement pack of Summary/Response Forms. This scoring and report system was designed as a quick, efficient tool for entering individual or group test session data; scoring subtest item responses; converting the total raw scores into standard scores and percentile ranks; generating index scores and percentile ranks, and obtaining a score summary and narrative report.  The GARS-3 Summary/Response Forms that come with the kit and are sold separately include the instructions for activating the online scoring account.  The activation code for online scoring is printed on each form.