The DASS-280, also known as the Depression Anxiety Stress Scales-280, is a widely used psychological assessment tool designed to measure the severity of depression, anxiety, and stress in individuals. Developed by researchers at the University of New South Wales, Australia, the DASS-280 is a self-report questionnaire that provides a comprehensive evaluation of an individual's mental health.

The DASS-280 is a 280-item questionnaire that assesses three key domains of mental health: depression, anxiety, and stress. The test is designed for individuals aged 18 and above, and it typically takes 20-30 minutes to complete. The DASS-280 is not a diagnostic tool, but rather a screening instrument that helps identify individuals who may be experiencing symptoms of depression, anxiety, or stress.