Sleep Quality Questionnaire Test

Understand perceived sleep quality and next-day alertness in about 2 minutes. Six quick items make it easy to track changes over time and support clinical or research decisions.

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Questions: 62 minutes

Hi! My name is Freudly, i am an AI therapist, I will give you an interpretation of the test after you complete it.

08:30

October 2, 2025

October 2, 2025
Material has been updated

October 2, 2025
Material has been published

15,546 views

1,998 completions

1,564 likes

Verified by Daniel Hall

Psychologist with 25 years of experience

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How the Scales are Structured

example score

8/30

Sleep Quality Scale (SQS)

Assesses a person’s overall subjective sleep quality and how restorative their sleep feels.

Potential sleep problems

Borderline

Typical for healthy sleep

6 – 18: Potential sleep problems | 19 – 21: Borderline | 22 – 30: Typical for healthy sleep

A score of 8 falls in the “Potential sleep problems” range, indicating markedly reduced perceived sleep quality compared with typical healthy scores.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

People with sleep complaints

44%OF USERS

They have trouble falling asleep, staying asleep, or waking refreshed and want a quick picture of how restorative their sleep feels.

Patients in insomnia treatment

33%OF USERS

They take it repeatedly during therapy to track whether sleep quality is improving and to discuss next steps with a clinician.

Clinic and research participants

23%OF USERS

They complete it as part of a screening or study where a fast, standardized self-rating of sleep is needed.

BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.

RESULTS YOU CAN ACTUALLY USE

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Insights

Get insights on behavioral and thought patterns you might not notice on your own. By uncovering subtle connections between your responses, you’ll better understand what may be driving your current results.

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Clarify, reflect, and explore your results right away. Talk through your experience, ask questions, and explore meanings in a calm, non-diagnostic dialogue.

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Used in 52+ countries

Benchmarking

See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.

Sleep Quality Scale (SQS)

Average

14.1

Normal range

9.6 — 18.5

min.

max.

Majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.

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CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

What does this questionnaire measure?

It measures perceived sleep quality and how restorative sleep feels. It covers key sleep features such as sleep onset, awakenings, and next-day alertness.

How long does it take and how many items are included?

Completion typically takes about two minutes. It includes six questions.

What time period should responses reflect?

Responses should reflect typical recent sleep rather than a single unusual night. If sleep varies widely, responses should reflect the most common pattern.

How should the questions be answered?

Select the option that best matches the usual experience for each item. Each item should be answered, even if an estimate is required.

How are results used?

Scores support screening and tracking change over time, such as during treatment for sleep problems. Results are interpreted alongside clinical information and are not a standalone diagnosis.

WHAT THE TEST MEASURES

About This Assessment

Sleep Quality Questionnaire Test - Symptoms and Signs

sleep

This brief self-report measure assesses a respondent’s perceived sleep quality and related sleep complaints over a recent period. The Sleep Quality Questionnaire is intended to support rapid clinical screening and baseline characterization of subjective sleep.

The instrument includes 6 items and typically takes about 2 minutes to complete. Items query common domains of sleep and restorative functioning, allowing clinicians to summarize overall perceived sleep quality and track change over time.

In practice, the Sleep Quality Questionnaire may be used to monitor response to interventions for insomnia and other sleep-related concerns and to guide follow-up assessment as needed. It is commonly cited in the sleep literature (Buysse, Reynolds, Monk, Berman, & Kupfer).

Author: C. F. Reynolds III, D. J. Buysse, D. J. Kupfer, S. R. Berman, T. H. Monk

Literature: Buysse, D. J., Reynolds, C. F., Monk, T. H., Berman, S. R., & Kupfer, D. J. The Pittsburgh sleep quality index: A new instrument for psychiatric practice and research. Psychiatry Research. 1989.; Morin, C. M., & Espie, C. A. Insomnia: A clinical guide to assessment and treatment. Springer. 2003.

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