The most widely used measure of pre-competitive state anxiety. Cognitive anxiety captures worry and negative expectations; Somatic anxiety captures physiological arousal perceptions; Self-confidence captures positive expectations. The most cited anxiety measure in sport psychology, used in thousands of studies across individual and team sports.
Martens, R., Burton, D., Vealey, R.S., Bump, L.A., & Smith, D.E. (1990). Development and validation of the Competitive State Anxiety Inventory-2. In R. Martens, R.S. Vealey, & D. Burton (Eds.), Competitive anxiety in sport (pp. 117-190). Human Kinetics.
Free access to 2023+ psychometric scales at PsychScales