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Conners' Adult ADHD Rating Scales

Conners' Adult ADHD Rating Scales (CAARS) is a multidimensional assessment of adult ADHD

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  • Test forms & reports

    Booklets, record forms, answer sheets, report usages & subscriptions

    6 options

    From £109.20
  • Support materials

    Manuals, stimulus books, replacement items & other materials

    1 option

    From £113.00
  • All products

    All tests and materials offered for CAARS

    7 options

    From £109.20
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Prices include VAT where applicable
  • CAARS Technical Manual CAR20A
    9780749140106 Qualification Level B


  • CAARS Long Observer Forms CAR900
    9780749140090 Qualification Level B

    Pack of 25


  • CAARS Short Observer Forms CAR110
    9780749140083 Qualification Level B

    Pack of 25


  • CAARS Screener Observer Forms CARS130
    9780749140076 Qualification Level B

    Pack of 25


  • CAARS Long Self-Report Forms CARS300
    9780749140069 Qualification Level B

    Pack of 25


  • CAARS Short Self-Report Forms CARS500
    9780749140052 Qualification Level B

    Pack of 25


  • CAARS Screener Self-Report Forms CAR700
    9780749140045 Qualification Level B

    Pack of 25



Publication date:
Age range:
18 years and older
Qualification level:
Completion time:
Self-report, Observer-completed - 10 to 15 minutes

Product Details

When ADHD stays with a person into adulthood, it usually contributes to larger personal and professional difficulties. The CAARS scales measure the presence and severity of ADHD symptoms so that you can determine whether or not ADHD is a contributing factor to a client's difficulties.


  • Suitable for clinical, research, rehabilitation and correctional settings, the CAARS scales quantitatively measure ADHD symptoms across clinically significant domains, while examining the manifestations of those symptoms
  • Provided a multiple-informant assessment with self-report (CAARS-S) and observer ratings (CAARS-O)
  • Addresses the same behaviours and contain identical scales, subscales, and indexes. Long, short, and screening versions are available for each (see below)


  • Normative data for the self-report forms based on a sample of 1,026 nonclinical adults,
  • Normative data for the observer forms were based on ratings from spouses, family members, or friends of 943 nonclinical adults
  • Separate norms available by gender and age-group intervals (18-29, 30-39, 40-49 and 50 years and older)
  • Raw scores and T-scores are produced for each scale, subscale and index, and are plotted on profile forms
  • Long self-report (CAARS-S:L) and observer (CAARS-O:L) assessments contain nine empirically derived scales that assess a broad range of problem behaviours. They include three DSM-IVTM DSymptom measures, a 12-item ADHD index, and an inconsistency index for identifying random or careless responding
  • Designed to display key dimensions when time with respondents is limited, the short self-report (CAARS-S:S) and observer (CAARS-O:S) assessments comprise abbreviated versions of the factor-derived subscales that appear in the long versions. The ADHD Index and the Inconsistency Index are included as well
  • The CAARS screening versions (CAARS-S:SV and CAARS-O:SV) focus on DSM-IVTM criteria for quick ADHD identification. These versions include the same ADHD index of the long and short versions, as well as the DSM-IVTM ADHD Symptom Subscales