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This self-report measure assesses perceived stress and the extent to which life situations are appraised as unpredictable, uncontrollable, and overwhelming. The Perceived Stress Scale (PSS) is commonly used in clinical and research settings to characterize subjective stress over a recent time frame (Tom Kamarck; Robin Mermelstein).
The instrument contains 40 items and typically requires about 8 minutes to complete. Scores are used to estimate overall perceived stress severity and can support screening, baseline characterization, and monitoring of change over time; results should be interpreted in context of the individual’s clinical presentation and other relevant assessment data. The Perceived Stress Scale (PSS) is not a standalone diagnostic tool and is best used as part of a broader evaluation.