Overview
A multi-informant assessment of ADHD and comorbid conditions in children and adolescents, with parent, teacher, and self-report forms.
Use cases
Clinical diagnosis support, school-based evaluations, and treatment monitoring.
Assessment intelligence
- Score range
- 40 – 90
- Direction
- Higher = worse
- Scoring method
- Sum
- Time to score
- ~20 min
Subscales
- Inattention
- Hyperactivity/Impulsivity
- Learning Problems
- Executive Functioning
- Defiance/Aggression
- Peer Relations
Cutoff thresholds & interpretation
| Severity | Threshold | Interpretation |
|---|---|---|
| Average | T<60 | Few concerns |
| High average | T 60-64 | Slightly more concerns than typical |
| Elevated | T 65-69 | More concerns than typically reported |
| Very Elevated | T≥70 | Many more concerns than typically reported |
T-scores normed by age and sex; parent, teacher, and self-report forms.
Editorial notes
High internal consistency and test-retest reliability; strong factorial validity.
Available languages
Validation studies (2)
- Conners 3rd Edition: factor structure and reliabilityConners CK. · Multi-Health Systems Technical Manual · 2008DOI: 10.1037/t81067-000
- Multi-informant agreement on Conners-3 in ADHD diagnosisKao GS, Thomas HM. · Journal of Attention Disorders · 2010DOI: 10.1177/1087054710371196