GARS-3™

Gilliam Autism Rating Scale: 3rd Edition

James E. Gilliam, Ph.D.

Assists in identifying autism and estimating its severity in individuals 3 to 22


GARS-3™

Overview

Overview

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 Diagnostic and Statistical Manual of Mental Disorders - Fifth Edition (DSM-5).

  • Items and subscales reflect DSM-5 diagnostic criteria for Autism Spectrum Disorder
  • Forty-four new items were added to the GARS-3
  • 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 provides 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

Key Areas Measured


Key Areas Measured

  • Restrictive and Repetitive Behaviors
  • Social Interaction
  • Social Communication
  • Emotional Responses
  • Cognitive Style
  • Maladaptive Speech

Quick Reference

Age

Age

3 to 22

Administration Type

Administration Type

Self

Administration Time

Administration Time

5 to 10 Minutes

Number of Items

Number of Items

56

Qualification Level

Qualification Level

B

Format(s)

Format(s)

Handscored

Quick Reference

Age

Age

3 to 22

Administration Type

Administration Type

Self

Administration Time

Administration Time

5 to 10 Minutes

Number of Items

Number of Items

56

Qualification Level

Qualification Level

B

Format(s)

Format(s)

Handscored

Reliability and Validity

Reliability and Validity

Normative Data

Normative Data

Reliability and Validity

  • 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
  • Interrater reliability intraclass coefficients exceed .80 and .84 for the Autism Indexes.
  • Correlations of the GARS-3 scores with those of other well-known diagnostic tests for autism are large or very large in magnitude
  • 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 = .97, specificity = .97, ROC/AUC = .93.
  • Confirmatory and exploratory factor analyses demonstrate the theoretical and empirical validity of the subscales.
  • Other validity evidence is provided in the manual.

Normative data (N = 1,859) were collected in 2010 and 2011. Demographic characteristics of the normative sample are keyed to those reported by U.S. Bureau of the Census, 2011.


Training

Training

 

Pricing

Select Language of Tool:

Online

Online

Assess easily online from anywhere. Includes automatic scoring and report generation.

Software

Software

Requires software. Includes automatic scoring and report generation.

Handscored

Handscored

QuikScore forms are scored by hand without reports.

Starter Kits
Certification

Starter Kits

Simulations
Certification

Simulations

Kits

GARS-3: Complete Kit

Examiner’s Manual, 50 Summary/Response Booklets, and the Instructional Objectives manual, and a storage box.

Handscored
CA: $172.00

Forms

GARS-3: Summary/Response Form

GARS-3: Summary/Response Form

Handscored
CA: $62.00
(Sold in packs of 50)

Ortiz PVAT Licenses

Ortiz PVAT Licenses

Online Scoring

Online Scoring

Supplementary Materials

Supplementary Materials

Other Materials

Other Materials

GARS-3: Examiners Manual

GARS-3: Examiners Manual

Default Title
CA:
$77.00

GARS-3 Instructional Objectives for Individuals Who Have Autism

GARS-3 Instructional Objectives for Individuals Who Have Autism

Default Title
CA:
$37.00