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Cambridge Depersonalization Scale (CDS)

Cambridge Depersonalization Scale (CDS) Test

Understand how strongly depersonalization affects you in about 10 minutes. This 58 item scale tracks symptom frequency and duration to support diagnosis and monitor treatment progress.

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Questions: 5810 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

23,477 views

1,514 completions

1,150 likes

Verified by Daniel Hall

Psychologist with 25 years of experience

Scale Explorer

How the Scales are Structured

example score

92/174

Duration (D)

Measures how long depersonalization episodes typically last, with higher scores reflecting longer-lasting experiences.

Short duration

Moderate duration

Long duration

0 – 58: Short duration | 59 – 116: Moderate duration | 117 – 174: Long duration

A score of 92 falls in the Moderate duration range, suggesting depersonalization experiences tend to last a noticeable but not the longest amount of time on this scale.

example score

68/116

Frequency (F)

Measures how often depersonalization experiences occur over the assessed period, with higher scores indicating more frequent episodes.

Low frequency

Moderate frequency

High frequency

0 – 38: Low frequency | 39 – 77: Moderate frequency | 78 – 116: High frequency

A score of 68 falls in the Moderate frequency range, suggesting depersonalization experiences occur fairly often during the assessed period.

example score

133/290

Depersonalization Scale (DS)

Measures the severity of depersonalization symptoms by quantifying how often and how long experiences of detachment or unfamiliarity with self and surroundings occur.

Below threshold

Elevated

0 – 70: Below threshold | 71 – 290: Elevated

A score of 133 falls in the Elevated range, indicating a higher-than-threshold level of depersonalization-related experiences as captured by this scale.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

People feeling unreal

41%OF USERS

They take it to check how often they feel detached from themselves, like watching life from the outside or not recognizing their own thoughts and body.

Anxiety and panic sufferers

34%OF USERS

They use it to sort out whether intense stress, panic, or burnout is linked to depersonalization-like episodes and how long these episodes last.

Clients in therapy monitoring

25%OF USERS

They take it during counseling or psychiatric care to track symptom severity over time and see whether treatment is helping.

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

RESULTS YOU CAN ACTUALLY USE

Scale Results
— Explained Clearly

Your scores across each test scale are translated into plain, usable insights. You won’t just get numbers — you’ll learn how your results impact your daily life, emotional state, and overall well-being.

AI-Powered
Interpretation

You’ll receive a structured, clinically-grounded explanation. Our AI analyzes patterns and relationships between scales to provide a coherent interpretation, without exaggerated language.

Statistical
Comparison

See how your results compare to others. Anonymized platform data is used to create a percentile scale, which identifies whether your results are typical.

Practical
Recommendations

You’ll receive clear, actionable guidance tailored to your profile. These easy-to-implement suggestions focus on coping, self-regulation, and realistic next steps.

AI-Powered
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.

Discuss with
an AI Therapist

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.

Duration (D)

Average

Normal range

15.5 — 72.4

min.

max.

174

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.

Frequency (F)

Average

Normal range

54.9 — 89.2

min.

max.

116

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.

Depersonalization Scale (DS)

Average

98.3

Normal range

45.7 — 151

min.

max.

290

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 experiences of altered self-perception and feelings of detachment from the self. It assesses both how often symptoms occur and how long they last.

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

Completion typically takes about 10 minutes. It contains 58 items.

How should responses be selected?

Each item is rated for frequency and duration based on recent experience. Select the option that best matches typical episodes rather than rare exceptions.

What should be done if an item is unclear or does not fully match the experience?

Use the closest available response option and base the rating on the main meaning of the item. Do not leave items blank unless instructed.

How are results used?

Scores summarize the severity and persistence of symptoms and can support clinical assessment and monitoring over time. Results do not provide a diagnosis on their own.

WHAT THE TEST MEASURES

About This Assessment

Cambridge Depersonalization Scale (CDS) Test - Symptoms and Signs

depersonalization psychopathology

The measure is a self-report instrument designed to assess depersonalization experiences. The Cambridge Depersonalization Scale (CDS) asks respondents to rate the frequency and duration of commonly reported symptoms involving detachment from self and altered self-perception.

It contains 58 items and typically takes about 10 minutes to complete. Item responses are intended to support clinical characterization of symptom severity and monitoring of change over time in clinical or research settings.

The Cambridge Depersonalization Scale (CDS) is most appropriately interpreted in conjunction with clinical interview and relevant diagnostic assessment, particularly when dissociative symptoms may overlap with anxiety, trauma-related, mood, or psychotic-spectrum presentations. It was described by Jeffrey Abugel and Daphne Simeon.

Author: Daphne Simeon, Jeffrey Abugel

Literature: Holmes, E. A., Brown, R. J., Mansell, W., Fearon, R. P., Hunter, E. C. M., Frasquilho, F., & Oakley, D. A. Are there two qualitatively distinct forms of depersonalization? A review and evaluation of the evidence. Journal of Nervous and Mental Disease. 2005.; Sierra, M., & Berrios, G. E. The Cambridge Depersonalisation Scale: a new instrument for the measurement of depersonalisation. Psychiatry Research. 2000.

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