The BDI (Beck Depression Inventory) is a 21-item self-report depression measure developed by Aaron Beck at the University of Pennsylvania. The original was published in 1961; the current BDI-II was published in 1996 and re-anchored to DSM-IV depression criteria. Each item presents 4 statements describing progressive severity of a depression symptom; you choose the one that best describes you. Total scores range 0-63.

BDI vs PHQ-9 — which should I use?

BDI-II is longer (21 items vs 9), more cognitively focused (heavier emphasis on pessimism, guilt, self-criticism), and copyrighted (used mainly in research and specialist practice). PHQ-9 is shorter, DSM-anchored, and freely available. For general self-check, treatment monitoring, and primary-care use, PHQ-9 has largely replaced BDI-II. Both are validated and effective. Rule of thumb: use PHQ-9 unless a specific clinician or research protocol requires BDI-II.

What are the BDI-II severity bands?

Standard BDI-II bands: 0-13 minimal depression, 14-19 mild, 20-28 moderate, 29-63 severe. A score of 17 or higher generally warrants clinical evaluation. Item 9 asks about suicidal thoughts — any positive response requires same-day clinical contact regardless of total score.

Why can''t I take the BDI-II freely?

BDI-II is copyrighted by Pearson Clinical (parent of the original publisher) and is not in the public domain. Clinicians and researchers pay a per-form or licence fee to use it. This is one of the reasons PHQ-9 (freely available under public health licence) has become more common in primary care and free self-check contexts — Mindtalk's app hosts PHQ-9 rather than BDI-II for the same reason.

Is BDI-II validated in India?

Yes. BDI-II has been validated in Indian samples with Hindi, Kannada, Tamil, and other major language versions. It has been used in Indian depression research since the 1970s. Clinical use is more common in specialist psychiatric settings than in primary care (where PHQ-9 has taken over).

What does high emphasis on cognitive symptoms mean?

BDI-II items over-weight cognitive symptoms of depression relative to somatic symptoms. Pessimism, guilt, self-criticism, worthlessness, difficulty concentrating, and dissatisfaction get many items each. Sleep, appetite, energy, and psychomotor symptoms get fewer items than in PHQ-9 or HAM-D. This reflects Beck's cognitive theory of depression — that cognitive distortions drive and maintain depression. Practically: BDI-II is a good choice when cognitive symptoms are the main concern; PHQ-9 or HAM-D when somatic symptoms matter clinically.

What should I do instead?

Take the [PHQ-9](/assessments/phq-9) — freely available, DSM-anchored, 2-3 minutes, validated in India. It's the standard depression self-check in primary care globally and is what the Mindtalk app offers.

Assessments

BDI Test — Beck Depression Inventory (Explained + Free Alternative)

The Beck Depression Inventory — the classic 21-item depression measure. Learn what it is, when to use it, and take the free PHQ-9 alternative in the Mindtalk app.

Important safety information

The BDI-II (explained) → PHQ-9 (alternative) includes a question about thoughts of self-harm (question 9). If you have had any such thoughts recently, please reach out for support before or instead of taking this assessment — you do not need to take a test to deserve help.

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Take the BDI-II (explained) → PHQ-9 (alternative) (5 min)See related assessments

What the BDI is (and why we don't offer it directly)

The BDI (Beck Depression Inventory) is one of the most historically important depression self-report measures. Developed by Aaron Beck at the University of Pennsylvania — the same clinician who developed cognitive therapy — the BDI reflects Beck's theory that depression is maintained by cognitive distortions (pessimism, self-criticism, guilt). BDI items emphasise these cognitive symptoms.

The BDI-II (1996) is the current revision, re-anchored to DSM-IV depression criteria.

The BDI is copyrighted by Pearson Clinical. Clinicians and researchers pay a per-form or licence fee to use it. This is why the PHQ-9 — freely available, DSM-anchored, equally validated — has largely replaced BDI-II in primary care and free self-check contexts, including the Mindtalk app.

If your clinician has mentioned BDI-II, this page explains what it is. For a free depression self-check, take the PHQ-9 in the Mindtalk app — same 2-3 minute administration, equally validated for general use.

BDI-II severity bands

Score	Severity	What it means
0-13	Minimal	Symptoms typical for everyday life
14-19	Mild	Symptoms present but functioning largely intact
20-28	Moderate	Symptoms causing impairment
29-63	Severe	Significant symptoms and impairment

Item 9 asks about suicidal thoughts — any positive response requires same-day clinical contact regardless of total score.

BDI-II vs PHQ-9

Feature	BDI-II	PHQ-9
Items	21	9
Time	5 min	2-3 min
Anchoring	Cognitive theory of depression	DSM-5 criteria
Cost	Copyrighted (fee per use)	Free (public health licence)
Range	0-63	0-27
Primary use	Research + specialist clinical	Primary care + general self-check + treatment monitoring
Indian validation	Yes	Yes

Both are validated and effective. The choice usually reflects clinician preference and research protocol. For general self-check, PHQ-9 is the practical default.

When your clinician might use BDI-II

Research protocols requiring BDI-II specifically
Specialist depression clinics with historical BDI-II use
Cognitive therapy contexts where cognitive symptom mapping matters
Comparisons with earlier BDI-II-based clinical or research data

When to use PHQ-9 instead

General self-check
Primary-care screening
Treatment monitoring in outpatient contexts
When freely available assessment is needed
Standard practice in most contemporary contexts

After the depression self-check

Take the PHQ-9 as the free alternative.
For clinician-administered severity: HAM-D or MADRS.
For depression + anxiety + stress combined: DASS-21.
For perinatal depression: EPDS.
For bipolar screening: MDQ.
Structured programme: the 90-day Emotional Reset programme is calibrated for moderate depression.
Book a specialist. Mindtalk's psychiatrists and clinical psychologists across India.

How to take the BDI-II (explained) → PHQ-9 (alternative)

1
Take the PHQ-9 as a free alternative
Tap "Take the PHQ-9" to open the assessment — the freely available depression screener that has largely replaced BDI-II in primary care.
2
Answer the 9 items about the past 2 weeks
For each item, choose how often you have been bothered by the symptom over the past 2 weeks.
3
Get your score, severity band, and next-step recommendation
Receive a total 0-27 score, severity band, and personalised next-step recommendation.

Take the BDI-II (explained) → PHQ-9 (alternative) (5 min)

Frequently Asked Questions

What is the BDI?: The BDI (Beck Depression Inventory) is a 21-item self-report depression measure developed by Aaron Beck at the University of Pennsylvania. The original was published in 1961; the current BDI-II was published in 1996 and re-anchored to DSM-IV depression criteria. Each item presents 4 statements describing progressive severity of a depression symptom; you choose the one that best describes you. Total scores range 0-63.
BDI vs PHQ-9 — which should I use?: BDI-II is longer (21 items vs 9), more cognitively focused (heavier emphasis on pessimism, guilt, self-criticism), and copyrighted (used mainly in research and specialist practice). PHQ-9 is shorter, DSM-anchored, and freely available. For general self-check, treatment monitoring, and primary-care use, PHQ-9 has largely replaced BDI-II. Both are validated and effective. Rule of thumb: use PHQ-9 unless a specific clinician or research protocol requires BDI-II.
What are the BDI-II severity bands?: Standard BDI-II bands: 0-13 minimal depression, 14-19 mild, 20-28 moderate, 29-63 severe. A score of 17 or higher generally warrants clinical evaluation. Item 9 asks about suicidal thoughts — any positive response requires same-day clinical contact regardless of total score.
Why can''t I take the BDI-II freely?: BDI-II is copyrighted by Pearson Clinical (parent of the original publisher) and is not in the public domain. Clinicians and researchers pay a per-form or licence fee to use it. This is one of the reasons PHQ-9 (freely available under public health licence) has become more common in primary care and free self-check contexts — Mindtalk's app hosts PHQ-9 rather than BDI-II for the same reason.
Is BDI-II validated in India?: Yes. BDI-II has been validated in Indian samples with Hindi, Kannada, Tamil, and other major language versions. It has been used in Indian depression research since the 1970s. Clinical use is more common in specialist psychiatric settings than in primary care (where PHQ-9 has taken over).
What does high emphasis on cognitive symptoms mean?: BDI-II items over-weight cognitive symptoms of depression relative to somatic symptoms. Pessimism, guilt, self-criticism, worthlessness, difficulty concentrating, and dissatisfaction get many items each. Sleep, appetite, energy, and psychomotor symptoms get fewer items than in PHQ-9 or HAM-D. This reflects Beck's cognitive theory of depression — that cognitive distortions drive and maintain depression. Practically: BDI-II is a good choice when cognitive symptoms are the main concern; PHQ-9 or HAM-D when somatic symptoms matter clinically.
What should I do instead?: Take the [PHQ-9](/assessments/phq-9) — freely available, DSM-anchored, 2-3 minutes, validated in India. It's the standard depression self-check in primary care globally and is what the Mindtalk app offers.

Need a clinician's read on your results?

A high score is a signal, not a diagnosis. Mindtalk's psychiatrists and clinical psychologists can interpret your results and recommend next steps — same-day appointments available.

Book a consultation See our specialists