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This self-report measure provides a brief screening of common negative emotional states. The Depression Anxiety Stress Scales (DASS-21) assesses symptom severity across depression, anxiety, and stress domains over the past week.
The instrument consists of 21 items and is typically completed in about 4 minutes. Items are rated on a Likert-type frequency/severity scale, yielding separate subscale scores that can be used to characterize current distress and support monitoring over time. It is not intended to serve as a standalone diagnostic tool; results should be interpreted in the context of clinical interview and other relevant information.
Originally developed by P. F. Lovibond and S. H. Lovibond, the Depression Anxiety Stress Scales (DASS-21) is commonly used in both clinical and research settings to support screening, symptom tracking, and treatment planning.