The Conners Adult ADHD Rating Scales 2nd Edition (CAARS™ 2) builds upon the strong foundation provided by its predecessor, the Conners’ Adult ADHD Rating Scales (CAARS™). CAARS 2 is an even more comprehensive tool that, in conjunction with other sources of information, aids in the diagnostic process, treatment evaluation, and monitoring.

This new edition provides updated, expanded, and reconceptualised scales and new scales to cover core symptoms of ADHD and its associated clinical concerns in adults 18 years and older.

Purchase of CAARS 2 credits includes online access to the CAARS 2 Manual.

Updated and Expanded Norms

New normative data were derived from a large sample selected to be representative of the North American population based on the 2018 U.S. census and the 2016 Canadian census proportion (balanced equally by age and stratified by gender, race/ethnicity, education level, and geographic region). An ADHD Reference Sample has been added to allow examiners to compare scores to those produced by others already diagnosed with ADHD.

 Extended Upper Age Range

The oldest normative sample age group in the original CAARS was 50 years and older. The CAARS 2 Normative Sample includes stratified samples for seven age groups, with an upward expansion to include 50–59, 60–69, and 70+ years to ensure precision when assessing older adults.

Gender-Inclusive Language

The CAARS 2 uses gender-inclusive language and has non-binary gender options.

Multiple Reference Samples

Examiners can now select reference samples from the General Population or individuals with ADHD. Both reference samples include the option to compare against a Combined Gender group, a Gender Specific–Males group, and a Gender Specific–Females group. The report allows a convenient side-by-side comparison of rater scores with multiple groups.

Increased Alignment with the Conners 4th Edition (Conners 4™)

The CAARS 2 and Conners 4 (a measure of symptoms of and impairments associated with ADHD, along with common co-occurring problems and disorders for youth aged 6 to 18 years) were designed to be aligned and comparable to one another to facilitate a lifespan approach to ADHD assessment/monitoring and to simplify the integration of information as adolescents transition into adulthood.

Flexible and Simplified Purchase Options

Each CAARS 2 purchase on the MHS Online Assessment Center+ can be used to generate reports for any of the CAARS 2 forms (Self-Report or Observer versions of the full-length CAARS 2, CAARS 2–Short, or CAARS 2–ADHD Index) in any available language. This flexibility eliminates the need to monitor remaining balances for different forms. Reports can be generated multiple times at no additional charge.