K10 Test — Kessler Psychological Distress Scale (Explained + Free PSS-10 Alternative)
The Kessler Psychological Distress Scale — a 10-item general distress screener used in population-level mental health surveys. Learn what it is, and take the free PSS-10 in the Mindtalk app.
Clinically reviewed by Dr. Abhimanyu Chandak, MD in Psychiatry, MBBS. Last reviewed 2026-09-25.
Important safety information
The K10 (explained) → PSS-10 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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What the K10 is
The K10 (Kessler Psychological Distress Scale) is a 10-item self-report screener for non-specific psychological distress — captures overall mental health load without distinguishing depression from anxiety.
Developed by Ronald Kessler and colleagues at Harvard Medical School in 2002 for the redesigned US National Health Interview Survey. It is used in national health surveys and in clinical services, particularly in Australia.
Non-specific distress is deliberate — one instrument that screens for general mental health load is more efficient for population surveys than separate depression + anxiety + stress measures. For clinical assessment following a positive K10, specific measures (PHQ-9, GAD-7, PSS-10) are then used.
How the K10 is scored
Each of the 10 questions asks how often in the past 4 weeks you felt a particular way, answered from 1 (none of the time) to 5 (all of the time). Add the 10 answers for a total of 10-50. Higher scores mean more distress.
K10 bands
Two sets of Australian ranges are in common use. The ranges below are the ones often used in clinical services:
| Score | Distress level | Clinical interpretation | Suggested next step |
|---|---|---|---|
| 10-19 | Low | Likely well | No action; recheck if things change |
| 20-24 | Moderate | Mild disorder possible | Self-help and monitoring; recheck in 2-4 weeks |
| 25-29 | High | Moderate disorder possible | Clinical evaluation recommended |
| 30-50 | Very high | Severe disorder possible | Clinical evaluation soon |
Population surveys often use a different split (10-15 low, 16-21 moderate, 22-29 high, 30-50 very high). No cut-offs have been established for Indian adults, and a K10 score cannot tell you which condition, if any, is present.
Validation and evidence
Kessler and colleagues built the K10 and its 6-item short form, the K6, using item response theory on US national mail and telephone surveys (1,401 and 1,574 respondents). They validated the scales against the Structured Clinical Interview for DSM-IV in a two-stage clinical reappraisal study, and found both scales measure precisely in the most distressed 10% of the population, which is where screening matters. The K10 was then included in the 1997 Australian National Survey of Mental Health and Well-Being (10,641 adults) [1]. Andrews and Slade used that survey to publish normative data linking K10 scores to symptoms, disability, service use and diagnosis, concluding that the K10 is suitable for population monitoring and may be appropriate for clinical use [2]. We are not aware of Indian-specific cut-offs.
References
- Kessler RC, Andrews G, Colpe LJ, et al. Short screening scales to monitor population prevalences and trends in non-specific psychological distress. Psychol Med. 2002;32(6):959-976. PubMed
- Andrews G, Slade T. Interpreting scores on the Kessler Psychological Distress Scale (K10). Aust N Z J Public Health. 2001;25(6):494-497. PubMed
What the K10 does not tell you
- Which condition you have. High distress can reflect depression, anxiety, stress or a physical illness. Specific tests narrow it down.
- How long it has lasted. It covers 4 weeks only.
- Risk of self-harm. It does not ask about it; if you are having such thoughts, contact a crisis line or a clinician today.
What to use instead
The Mindtalk app hosts PSS-10 — Perceived Stress Scale, similar 10-item general-distress-adjacent format. For more specific screening:
- PHQ-9 — depression-specific
- GAD-7 — anxiety-specific
- DASS-21 — combined depression + anxiety + stress, useful if your K10 is high and you want to see which of the three is driving it
- WHO-5 — general wellbeing (positive-affect focused)
When to see a specialist
- K10 25+
- Persistent distress over weeks
- Functional impairment (sleep, work, relationships)
- Any positive suicidal ideation
- Distress with substance use
Persistent distress is often part of depression, an anxiety disorder or a stress-related condition, and talking therapies such as cognitive behavioural therapy (CBT) help with all three. Mindtalk's clinicians work across general mental health assessment in Bangalore, Hyderabad, Mysore, and online for anywhere in India.
Related reading
How to take the K10 (explained) → PSS-10 alternative
- 1
Take the PSS-10 in the Mindtalk app
Tap "Take the PSS-10" to open the assessment — general stress and distress screener.
- 2
Answer 10 items about the past month
For each item, choose how often you have felt that way.
- 3
Get your total and interpretation
Receive a total 0-40 score with interpretation and next-step recommendation.
Frequently Asked Questions
- What is the K10?
- The K10 (Kessler Psychological Distress Scale) is a 10-item self-report screener for non-specific psychological distress. Each item asks how often over the past 4 weeks you have felt various symptoms of anxiety and depression (e.g., "tired out for no good reason," "nervous," "so nervous nothing could calm you down," "hopeless," "restless"). Scored 1-5; total 10-50.
- What does "non-specific distress" mean?
- K10 doesn't distinguish between depression, anxiety, or stress — it captures overall psychological distress across these conditions. This makes it useful for population surveys (efficient screening of mental health load without needing separate depression + anxiety measures) and for general clinical intake (a first pass before more specific assessment).
- What are K10 bands?
- Two sets of Australian ranges are widely used. Clinical services often use 10-19 likely well, 20-24 mild, 25-29 moderate and 30-50 severe distress. Population surveys often use 10-15 low, 16-21 moderate, 22-29 high and 30-50 very high. Both treat 30 or more as very high. Neither has been validated as a cut-off for Indian adults, so read your score as a guide, not a diagnosis.
- K10 vs PSS-10 — which should I take?
- K10 captures general anxiety + depression distress; [PSS-10](/assessments/pss-10) captures perceived stress specifically (how uncontrollable, unpredictable, and overloaded life feels). K10 predicts mental disorder presence more strongly; PSS-10 predicts stress-related health outcomes more strongly. For general self-check, either works. Mindtalk app hosts PSS-10.
- Is K10 validated in India?
- The K10 has been used in Indian mental health research, but its score ranges come from US and Australian surveys, and we are not aware of Indian-specific cut-offs. Treat the ranges as a guide and discuss a high score with a clinician.
- What should I do instead?
- Take the [PSS-10](/assessments/pss-10) — freely available in the Mindtalk app. For depression-specific: [PHQ-9](/assessments/phq-9). For anxiety-specific: [GAD-7](/assessments/gad-7).
- What is the difference between the K10 and the K6?
- The K6 is a 6-question short form contained within the K10. Both were developed together in 2002 using item response theory. The K6 was added to the US National Health Interview Survey, while the K10 was used in the Australian National Survey of Mental Health and Well-Being. Both measure non-specific psychological distress.
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.