CAARS: For Use in Correctional Settings
Conners Adult ADHD Rating Scales: Corrrectional Settings

C. Keith Conners, Ph.D.
Drew Erhardt, Ph.D.
Elizabeth Sparrow, Ph.D.


When Attention-Deficit Hyperactive Disorder (ADHD) persists into adulthood, it usually contributes to larger personal and professional difficulties. The Conners' Adult ADHD Rating Scales measures the presence and severity of ADHD symptoms so that you can determine whether ADHD is a contributing factor to your clients' difficulties. Suitable for clinical, research, rehabilitation, and correctional settings, the CAARS scales quantitatively measures ADHD symptoms across clinically significant domains, while examining the manifestations of those symptoms.

The CAARS scales provide a multiple-informant assessment with self-report (CAARS–S) and observer ratings (CAARS–O). Both ratings address the same behaviors and contain identical scales, subscales, and indexes. Long, short, and screening versions are available for each.
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Scales and Forms


Long Versions

The long self-report (CAARS-S:L) and observer (CAARS-O:L) forms provide scores for all subscales, the ADHD Index and Inconsistency Index. The long versions provide the most detailed information upon which to base treatment plans

Short Versions
The short self-report (CAARS-S:S) and observer (CAARS-O:S) forms examine and highlight key dimensions, making them ideal when time with a respondent is limited. The short versions are also often used during treatment to track progress over time. They include abbreviated versions of the factor-derived subscales that are in the long versions. The ADHD Index and the Inconsistency Index are included as well.

Screening Versions
The screening versions of the self-report (CAARS-S:SV) and observer (CAARS-O:SV) forms focus on DSM-IV criteria for quick ADHD identification. They include the DSM-IV ADHD subscales and the ADHD Index to screen for the possibility of ADHD


  • Factor-Derived Subscales
  • DSM-IV ADHD Symptom Subscales
  • ADHD Index
  • Inconsistency Index

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Authors C. Keith Conners, Ph.D.,
Drew Erhardt, Ph.D., &
Elizabeth Sparrow, Ph.D.

Age Range 18 and older

Administration Time 10 to 15 minutes for each forms

Administration Type

  • Self-report
  • Observer-completed

Qualification Level B


  • Handscored
  • Online
  • Software