Children's Depression Inventory
Children's Depression Inventory (CDI) · Also known as: CDI, CDI-2
The CDI is a self-report measure of depressive symptoms in children and adolescents ages 7–17 years. Developed by Maria Kovacs in 1992 and revised in 2011, it is the most widely used screening tool for childhood depression in clinical and research settings. It assesses mood, self-concept, and functional impairment through 27–28 items rated on a 0–2 scale.
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When to use it
Primary uses: (1) Screening for depressive disorder in clinical child/adolescent populations; (2) monitoring treatment response in depressed children on psychotherapy or medication; (3) epidemiological research on childhood depression prevalence; (4) identifying at-risk children in school-based mental health programs; (5) baseline assessment in clinical trials targeting depression. Not recommended as sole diagnostic instrument—always follow with clinical interview.
Strengths & limitations
- High sensitivity and specificity for childhood depression (both versions show AUC >0.85 in ROC analysis).
- Extensive normative data across age (7–17) and gender; allows comparison to representative samples.
- Brevity and readability—low reading level (grades 3–4) suitable for wide age range.
- Well-validated in diverse populations (US, Europe, Latin America, Asia); available in 30+ languages.
- CDI-2 provides five empirically-derived subscales, improving clinical utility beyond total score.
- Free or low-cost; no copyright restrictions for clinical or educational use in some jurisdictions.
- Relies on child self-report; young children (ages 6–7) may struggle with abstract items (e.g., 'hopelessness').
- Does not assess duration or onset; cannot differentiate major depressive disorder from adjustment disorder or grief without interview.
- Limited by social desirability bias; some children minimize symptoms for peer approval or fear of consequences.
- Subscales on CDI-2, while improved, show modest intercorrelations (0.6–0.7); not fully independent constructs.
- Cultural nuances in expression of sadness (some cultures emphasize somatic over emotional symptoms) may not be fully captured.
Frequently asked
What is the cutoff score for identifying depressed children?
Raw score ≥20 (CDI/CDI-2) indicates significant depression warranting clinical follow-up. Scores 10–19 suggest mild symptoms; <10 indicate minimal symptoms. However, cutoff sensitivity/specificity varies by setting (clinical vs. school). In high-prevalence settings (e.g., inpatient psychiatry), use ≥15 to minimize false negatives. Always confirm with clinical interview.
Can parents or teachers complete the CDI instead of the child?
No—the standard CDI and CDI-2 are child self-report only. Parent-rated and teacher-rated versions exist (e.g., parent-report depression scales such as CBCL), but they measure different constructs (parent's perception of child's behavior, not child's internal mood). If child cannot self-report (severe developmental delay, mutism), a clinician-administered semi-structured interview (e.g., K-SADS) is preferable.
How often should CDI be readministered in treatment monitoring?
In clinical practice, readminister every 4–8 weeks during active treatment (psychotherapy or medication). In research, protocols typically specify intervals (e.g., weekly, biweekly). Use change in raw score ≥5–7 points as clinically meaningful improvement. Effect size d >0.5 indicates treatment-related change (not measurement error).
Is CDI valid for adolescents with autism or intellectual disability?
CDI is valid for average-to-above-average IQ adolescents. For children with intellectual disability (IQ <70), adapted depression interviews (e.g., PAS-ADD, Mood, Interest and Pleasure Subscale) are preferable. For autism spectrum disorder, CDI is valid; however, literal interpretation of items and alexithymia (difficulty labeling emotions) may reduce accuracy. Clinician interview remains essential.
Sources
- Kovacs, M. (1992). Children's Depression Inventory: Technical Manual. Multi-Health Systems. ISBN: 978-1569220474
- Kovacs, M. (2011). Children's Depression Inventory 2nd Edition (CDI-2): Technical Manual. Multi-Health Systems. ISBN: 978-1569221051
How to cite this page
ScholarGate. (2026, June 3). Children's Depression Inventory (CDI). ScholarGate. https://scholargate.app/en/child-psychiatry/child-depression-inventory
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
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