Childhood Autism Rating Scale, Second Edition (CARS2)
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©2013 By Eric Schopler, Ph.D., Mary E. Van Bourgondien, Ph.D., Glenna Janette Wellman, Ph.D., and Steven R. Love, Ph.D. Since its original publication, the Childhood Autism Rating Scale, CARS has become one of the most widely used and empirically validated autism assessments. It has proven especially effective in discriminating between children with autism and those with severe cognitive deficits, and in distinguishing mild-to-moderate from severe autism.
The revised Second Edition expands the test's clinical value, making it more responsive to individuals on the "high-functioning" end of the autism spectrum--those with average or higher IQ scores, better verbal skills, and more subtle social and behavioral deficits. While retaining the simplicity, brevity, and clarity of the original test, the CARS2 adds forms and features that help you integrate diagnostic information, determine functional capabilities, provide feedback to parents, and design targeted intervention.
The Standard and High-Functioning Forms (CARS2-ST and CARS2-HF) each include 15 items addressing the following functional areas:
Items on the Standard form duplicate those on the original CARS, while items on the HF form have been modified to reflect current research on the characteristics of people with high functioning autism or Asperger's Syndrome.
The clinician rates the individual on each item, using a 4-point response scale. Ratings are based not only on frequency of the behavior in question, but also on its intensity, peculiarity, and duration. While this more nuanced approach gives you greater flexibility in integrating diagnostic information, it still yields quantitative results.
The Rating Booklets for both the Standard and HF versions are particularly convenient. They include space for clinical note-taking and documentation. They briefly describe each area rated, providing a reminder of rating criteria and a framework for explaining results to parents. And they list cutoff values so that you can see at a glance whether further evaluation is warranted.
Rating values for all items are summed to produce a Total Raw Score. Each form includes a graph that allows you to quickly convert the Total Raw Score to a standard score or percentile rank (based on a clinical sample of 1,034 individuals with autism spectrum disorders). The Manual provides guidelines for score interpretation, suggestions for intervention, and case examples.
The Questionnaire for Parents or Caregivers The CARS2-QPC is an unscored form completed by the parent or caregiver of the individual being assessed. Its purpose is to give the clinician more information on which to base CARS2-ST or CARS2-HF ratings. Often the questionnaire serves as the framework for a follow-up interview, during which the clinician can clarify and interpret the responses provided by the parent or caregiver. The areas covered by the CARS2-QPC include the individual's early development; social, emotional, and communication skills; repetitive behaviors; play and routines; and unusual sensory interests.
The Best Way to Inform and Support Diagnosis The new CARS2 is extremely useful in identifying symptoms of autism.
With a new form for higher-functioning individuals, a structured way to gather caregiver information and guidelines linking scores to intervention, the CARS2 remains one of the best autism assessments available.Childhood Autism Rating Scale, Second Edition (CARS2)