Personality

Beck Depression Inventory BDI for Adults

A scientific depression test using Aaron Beck's methodology. Assess the severity of your depressive symptoms across 21 categories and get detailed interpretation.

21
questions
10-25
minutes
1M+
completed the test

⚕️ Disclaimer This test is for informational purposes only and does not constitute a medical diagnosis.

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📚 Methodology

About the Methodology

21
questions
10min
to complete
1M+
respondents
α≥0.86
reliability
Method Authors
Aaron T. Beck, C.H. Ward, M. Mendelson, J. Mock, J. Erbaugh
Developed by Aaron T. Beck and colleagues at the University of Pennsylvania, USA (1961)1961 year

What It Measures

The Beck Depression Inventory (BDI) is a classic psychodiagnostic tool created in 1961 by Aaron Beck, the founder of cognitive therapy. The test is based on the cognitive model of depression and measures 21 symptom categories.

Test Structure

21
statements
4
points (Likert scale)
Response Scale
1
Not present
2
Neutral
4
Strongly present

Normative Data

Sample
>17 000
respondents
Gender
73%
women
Age
27
years (average)
Scale Correlation
r=0.40
moderate correlation

Psychometric Properties

Internal consistency: α = 0.86
Test-retest reliability: r = 0.93 (1 week)
Convergent validity: r = 0.71 with Hamilton Depression Scale
Cited in 20,000+ research studies
Translated into more than 10 languages
📊 Measurements

What the Test Measures

The test measures 1 key dimensions, each revealing important aspects of your personality.

1

Depression Score

21 questions

Total score from 0 to 63 measuring the severity of depressive symptoms.

🎯 🎯 For You

Who Is This For

Adults suspecting depression

People monitoring their mental state

Therapy patients (progress monitoring)

Professionals for initial screening

💎 💎 Value

Practical Value

1

Early detection of depression symptoms

2

Tracking changes in condition over time

3

Motivation to seek professional help

4

Supplement to professional diagnosis

Scientific Validation and Clinical Significance of BDI

Aaron Beck's questionnaire is one of the most researched instruments in the history of psychology

21
depression symptoms
20K+
scientific publications
100+
countries of use
0.86
reliability (α)

📊 Depression Levels by BDI

😊
Minimal
0–10 points
Normal state, no signs of depression
😐
Mild
11–16 points
Mild mood disturbance
😔
Moderate
17–30 points
Clinically significant depression
😢
Severe
31–63 points
Severe depression, requires help

📈Psychometric Properties

BDI has undergone thousands of independent studies confirming its high reliability:

Cronbach's α
0.86–0.92
Excellent internal consistency
Test-retest
0.75–0.90
High result stability
Correlation with Hamilton
r = 0.71
Convergent validity with clinical scales

📜 History of BDI

1961
Aaron T. Beck
A psychiatrist at the University of Pennsylvania created BDI as an objective instrument for measuring depression.
1996
BDI-II
Updated version aligned with modern DSM-IV diagnostic criteria.
Today
World standard
BDI has been translated into 20+ languages and is used in clinics worldwide.

🌍Where BDI is Used

🇺🇸
USA
Psychiatry, cognitive therapy
🇬🇧
United Kingdom
NHS, primary healthcare
🇩🇪
Germany
Clinics, depression research
🇷🇺
Russia
Psychological centers, universities

WHO, National Institute of Mental Health (USA), major psychiatric clinics worldwide

🎯Practical Application Areas

🏥
Clinical Diagnosis
Screening and monitoring depression in clinical settings
💊
Treatment Effectiveness
Tracking therapy and medication progress
🔬
Scientific Research
Standard instrument in depression studies
🧘
Cognitive Behavioral Therapy
Key tool in CBT, created by Beck

💡Interesting Fact

While developing the BDI, Aaron Beck discovered that depression is related not so much to suppressed emotions (as Freud believed), but to negative thought patterns. This discovery led to the creation of cognitive therapy — one of the most effective methods for treating depression. Today, CBT helps millions of people worldwide.

📖 Beck, A.T. (1979). Cognitive Therapy of Depression

⚕️ Disclaimer

This test is intended solely for educational and informational purposes. It does not constitute a medical diagnosis and does not replace professional consultation with a psychiatrist or psychotherapist. If you are experiencing symptoms of depression, please seek professional help immediately.

If you need help, call a crisis hotline:

988

988 Suicide & Crisis LifelineOfficial free crisis support line

❓ FAQ

Frequently Asked Questions

Can the Beck test diagnose depression?

No, the BDI is not a diagnostic tool. It is a screening test for assessing the severity of symptoms. A diagnosis can only be made by a qualified professional.

How often can I take the Beck test?

It is recommended to take the test no more than once a week to track changes. During therapy, a specialist may recommend a different frequency.

What should I do if I get a high score?

If you score above 20 points, it is recommended to consult a mental health professional. If you have thoughts of self-harm — seek help immediately.

21questions
1scales
α > 0.86reliability
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Test results are informational and cannot be used for clinical diagnosis.