Cambridge Depersonalization Scale

The CDS is a self-report questionnaire consisting of 29 items. The time it takes to complete can vary based on the individual, but generally, it should take around 15-20 minutes.

Each item on the scale is rated on a 0-100 scale for frequency and duration. The overall score is calculated by taking the average of all the item scores. Higher scores indicate a greater severity or frequency of depersonalization experiences. A cut-off point of 70 has been suggested for distinguishing individuals with depersonalization disorder from those without psychiatric disorders.

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The CDS is used in both clinical and research settings. Clinically, it can help diagnose depersonalization disorder and monitor treatment progress. Research provides a standardized measure of depersonalization that can be used across studies.