CARS 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 behavioural 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 interventions.
The CARS2 includes three forms:
1. Standard Version Rating Booklet (CARS2-ST), Equivalent to the original CARS; for use with individuals with communication difficulties or below-average estimated IQs
2. High-Functioning Version Rating Booklet. (CARS2-HF), An alternative for assessing verbally fluent individuals, 6 years of age and older, with IQ scores above 80.
3. Questionnaire for Parents or Caregivers (CARS2-QPC): An unscored scale that gathers information for use in making CARS2ST and CARS2-HF ratings.
The parent or caregiver of the individual being assessed completes this unscored form. Its primary purpose is to give the clinician more information on which to base the CARS2-ST or CARS2-HF ratings. The questionnaire covers an individual’s early development; social, emotional, and communication skills; repetitive behaviours; play and routines; and unusual sensory interests.