PSS: Perceived Stress Scale

The PSS-10 is a 10-item validated measure of perceived psychological stress, how often situations feel uncontrollable, unpredictable, or overwhelming. Scores 0–40 across three levels. The most widely used psychological stress measure in health research.

What is the Perceived Stress Scale?

The Perceived Stress Scale (PSS) was developed by Sheldon Cohen, Tom Kamarck, and Robin Mermelstein at Carnegie Mellon University in 1983. It was the first validated measure of global perceived stress, designed to assess how often people feel their lives are uncontrollable, unpredictable, and overloaded. It measures stress as a subjective experience rather than the presence of specific stressors.

The PSS-10 (10-item version) is the most commonly used form. Each item is rated on a 5-point frequency scale from 0 (Never) to 4 (Very often), reflecting the past month. Four positively worded items (4, 5, 7, and 8) are reverse-scored before summing. Total scores range from 0 to 40, with higher scores indicating greater perceived stress.

The PSS is in the public domain and free for clinical and research use without permission. It is the most widely used psychological stress measure in health research globally, with associations with depression, anxiety, burnout, and immune function. It is commonly used alongside the PHQ-9 and GAD-7 to capture the full burden of psychological distress.

Rate how often you felt each way in the past month.

Educational reference only. Cannot diagnose or replace clinical evaluation.

PSS Score Interpretation

Cohen et al. (1983) normative cutoffs. Score is the sum of all 10 items after reverse-scoring items 4, 5, 7, and 8.

How PSS Scoring Works

Four items measure effective coping and are reverse-scored before summing.

Negatively Worded (Items 1–3, 6, 9–10)

Scored directly: Never=0, Almost Never=1, Sometimes=2, Fairly Often=3, Very Often=4.

These items ask about feeling upset, out of control, overwhelmed, or that difficulties are piling up.

Positively Worded, Reverse-Scored (Items 4, 5, 7, 8)

Reversed before summing: Never=4, Almost Never=3, Sometimes=2, Fairly Often=1, Very Often=0.

These items ask about feeling in control, able to handle problems, and on top of things, effective coping indicators.

Measure Stress Alongside Mood in HiBoop

PSS-10 alongside PHQ-9 and GAD-7, automated scoring and longitudinal tracking for every patient.