The Perceived Stress Scale (PSS) is a psychological instrument designed to measure the level of stress that an individual perceives in their life. Developed by Sheldon Cohen and his colleagues in 1983, the PSS is widely used to assess how unpredictable, uncontrollable, and overloaded respondents find their lives. It consists of a series of questions that ask about feelings and thoughts during the last month, with responses on a scale from 0 (never) to 4 (very often).
