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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
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
3 to 22
Administration Type
Self
Administration Time
5 to 10 Minutes
Number of Items
56
Qualification Level
B
Format(s)
Handscored
Quick Reference
Age
3 to 22
Administration Type
Self
Administration Time
5 to 10 Minutes
Number of Items
56
Qualification Level
B
Format(s)
Handscored
Reliability and ValidityReliability and Validity
Normative DataNormative 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
PricingSelect Language of Tool:
Online
Assess easily online from anywhere. Includes automatic scoring and report generation.
Software
Requires software. Includes automatic scoring and report generation.
Handscored
QuikScore forms are scored by hand without reports.
Starter Kits
Starter Kits
SimulationsSimulations
KitsKits
GARS-3: Complete Kit
Examiner’s Manual, 50 Summary/Response Booklets, and the Instructional Objectives manual, and a storage box.
N/A
N/A
HandscoredUSD: $209.00137800
FormsForms
GARS-3: Summary/Response Form
GARS-3: Summary/Response Form
N/A
N/A
HandscoredUSD: $74.00137830(Sold in packs of 50)
Ortiz PVAT LicensesOrtiz PVAT Licenses
Online ScoringOnline Scoring
Supplementary MaterialsSupplementary Materials
Other MaterialsOther Materials
GARS-3: Examiners Manual
GARS-3: Examiners Manual
Default TitleUSD:
$93.00137810USD:
$93.00
