Items on the GARS-2 are based on the definitions of autism adopted by the Autism Society of America and the "Diagnostic and Statistical Manual of Mental Disorders: Fourth Edition-Text Revision" (DSM-IV-TR). The instrument consists of 42 clearly stated items describing the characteristic behaviors of persons with autism. The items are grouped into three subscales: Stereotyped Behaviors, Communication, and Social Interaction. Using objective, frequency-based ratings, the entire scale can be completed and scored in 5 to 10 minutes. A structured interview form is included for gathering diagnostically important information from the child's parents.
The GARS-2 was normed on a representative sample of 1,107 persons with autism from 48 states within the United States. It has strong psychometric characteristics that were confirmed through studies of the test's reliablility and validity. Coefficients of reliablility (internal consistency and test-retest) for the subscales and entire test are all large to very large in magnitude. The valitity of the test was demonstrated by confirming that:
a. The items of the subscales are representative of the characteristics of austism.
b. The subscales are strongly related to each other and to performance of other tests that screen for autism.
c. The test standard scores discriminates persons with autism from persons with other severe behavior disorders such as persons with mental retardation and multi-disabilities.
A separate booklet, "Instructional Objectives for Children Who Have Austism", is included in the test kit to assist in the formulation of instructional goals and objectives based on the results from the GARS-2 assessment. In this way, instruction can be directly related to assessment results from the GARS-2.
The complete GARS-2 Kit includes Examiner's Manual, 50 Summary/Response Booklets, and the Instructional Objectives Manual, all in a sturdy storage box. (2006) PE12160 $126.00
This kit is being discontinued. Only 1 available at this discounted price. Shipping cost will be based on the market price ($158.00) and will be manually computed when the order is processed.
ORDERING OPTIONS:
GARS-2 Summary Response Booklets (50) PE12163 $45.00
Section I. Identifying Information
Section II. Score Summary
Section III. Interpretation Guide
Section IV. Profile of Scores
(Only 1 set of booklets is available at this price, shipping cost will be based on $56.00)
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