Eating Disorder Inventory-3 (EDI-3)
Garner (2004) — 91 items, 12 scales, 6 composites
The Eating Disorder Inventory-3 (EDI-3) is a clinical self-report measure for assessing eating disorder risk and related psychological traits. Released by David M. Garner in 2004, it retains all 91 items from EDI-2 but reorganizes the scale structure based on modern eating disorder theory. For females aged 13-53 (clinical norms). Requires Qualification Level B. ~20 minutes. Based on Clausen et al. (2010) and Lizana-Calderón et al. (2022).
What Is the Eating Disorder Inventory-3?
The Eating Disorder Inventory-3 (EDI-3) is a multidimensional self-report measure released by David M. Garner in 2004. It retains all 91 items from EDI-2 but reorganizes the scale structure through new factor analysis to better align with modern eating disorder theory.
Scale Structure
Eating Disorder Risk Scales:
- Drive for Thinness (DT) — Preoccupation with dieting, weight concerns
- Bulimia (B) — Binge eating and purging behaviors
- Body Dissatisfaction (BD) — Dissatisfaction with physical appearance
- Low Self-Esteem (LSE), Personal Alienation (PA)
- Interpersonal Insecurity (II), Interpersonal Alienation (IA)
- Interoceptive Deficits (ID), Emotional Dysregulation (ED)
- Perfectionism (P), Asceticism (A), Maturity Fears (MF)
Composites
- Eating Disorder Risk Composite (EDRC) = DT + B + BD
- Ineffectiveness Composite (IC) = LSE + PA
- Interpersonal Problems Composite (IPC) = II + IA
- Affective Problems Composite (APC) = ID + ED
- Overcontrol Composite (OC) = P + A
- General Psychological Maladjustment Composite (GPMC) = all psychological scales
Psychometric Properties
- EDRC internal consistency: α = .90-.97
- Test-retest reliability: EDRC r = .98, GPMC r = .97
- Discriminant validity: All 12 scales significantly distinguish patients from controls (p < .001)
- Factor structure: CFI > .94, RMSEA < .06
Clinical Cutoffs
| Diagnosis | Best Scale | Cutoff | AUC |
|---|---|---|---|
| :---------- | :----------- | :------: | :----: |
| Anorexia Nervosa (AN) | Interoceptive Deficits | 9-12 | .911 |
| Bulimia Nervosa (BN) | Bulimia | 9-13 | .963 |
| Partial AN/BN | Interoceptive Deficits | 9-13 | .862 |
Disclaimer
EDI-3 is a screening tool, not a diagnostic instrument. If results indicate moderate to high risk, professional evaluation is recommended.
References:
- Garner, D. M. (2004). EDI-3 Eating Disorders Inventory-3: Professional Manual.
- Clausen, L. et al. (2010). Validating the EDI-3. *J Psychopathol Behav Assess*, 33(1), 101–110.
- Lizana-Calderón, P. et al. (2022). Psychometric Properties of the EDI-3 in Chilean Youth. *Front Psychol*, 13, 806563.
Scoring Guide
Scored 0-4 (from "Always" to "Never"). Scale raw score = sum of item scores + correction factor (4 - item nominal minimum). See EDI-3 Professional Manual (Garner, 2004) for details.Result Interpretation
After completing the 91 questions, you'll receive an immediate, detailed report with:
- Your score — calculated automatically based on your responses
- Score interpretation — what your score means in practical terms
- Dimension breakdown — separate scores for each sub-scale
- Context — how your results compare to general population norms where available
All results are displayed on screen. No account or login needed.