State-Trait Anxiety Inventory (STAI): A Comprehensive Guide to Measuring Anxiety

The State-Trait Anxiety Inventory (STAI) is a widely utilized and rigorously validated self-report questionnaire in both research and clinical settings. It effectively assesses both state anxiety (SAI) and trait anxiety (TAI). The STAI consists of two scales: SAI measures temporary anxiety experienced at a specific moment, while TAI measures general anxiety tendencies. Each scale comprises 20 items scored on a 4-point scale, with higher scores indicating higher levels of anxiety. The total score range for the STAI is 20 to 80, with higher scores reflecting greater anxiety levels. The STAI provides reliable and valuable insights into anxiety levels among individuals aged 18 and older.