Beck Depression Inventory-II (BDI-II)
Psychology: Mental HealthReliability: alpha 0.913 sample items
About this scale
A 21-item self-report inventory of depression severity tied to DSM-IV criteria, widely used in clinical and research settings. Each item has four response options graded 0–3.
Sample item(s)
“Sadness (0=not sad … 3=so sad I can't stand it)”
“Pessimism”
“Past failure”
Reliability
Reported internal consistency: alpha 0.91. As a rule of thumb, Cronbach’s α ≥ .70 is considered acceptable, ≥ .80 good, and ≥ .90 excellent for established measures.
Notes
Commercial license required.
Source & citation
Beck, A. T., Steer, R. A., & Brown, G. K. (1996): Manual for the Beck Depression Inventory-II. San Antonio, TX: Psychological Corporation.
Source. Scale details are summarised from the publication cited above. Always consult the original source for the full item set, scoring, and permission to use.
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