Perceived Stress Scale (PSS)

Introduction

The Perceived Stress Scale (PSS), developed by Cohen, Kamarck, and Mermelstein (1983), is one of the most widely used psychological instruments for measuring stress perception. It assesses how unpredictable, uncontrollable, and overloaded you find your life over the past month.

This test offers two versions: the PSS-10 (short, recommended for a quick self-check) and the PSS-14 (original full version). Both use a 0–4 frequency scale. Higher scores indicate higher perceived stress. This tool is for self-reflection and is not a clinical diagnosis.

What does the PSS measure?

The Perceived Stress Scale (Cohen & Williamson, 1988) is the most widely used self-report measure of stress. This 10-item version (PSS-10) measures how unpredictable, uncontrollable, and overloaded you have found your life during the last month — your perception of stress, not a count of stressful events. Two decades of research have used it in health psychology, so it is well understood as an instrument.

How the questionnaire works

For each statement, rate how often you felt that way during the last month, from never to very often. Some statements are positively worded — they ask about feelings of control, and answering “very often” there counts in your favor. Answer for the month as a whole rather than the last few days. It takes about two minutes.

How to read your result

Your total runs from 0 to 40; higher means you perceived more stress. There is no official diagnostic cutoff — that is true of the PSS in general, not just this adaptation. Perceived stress legitimately differs between life roles, responsibilities, and cultures. The instrument is at its best when used repeatedly: the same person comparing an ordinary month with a deadline month, or watching whether a change at work shifted their baseline.

What this scale cannot do

Perceived stress is not the same as stressor exposure: two people can live through similar months and score very differently. Recall over a whole month is approximate, and mood on the day of answering colors the answers. The PSS does not diagnose anything and does not distinguish between kinds of stress — work, care, money, or health.

References

• Cohen, S., Kamarck, T., & Mermelstein, R. (1983). A global measure of perceived stress. Journal of Health and Social Behavior, 24, 385–396.
• Cohen, S., & Williamson, G. (1988). Perceived stress in a probability sample of the United States. In S. Spacapan & S. Oskamp (Eds.), The Social Psychology of Health (pp. 31–67). Sage.