Measurement
STAI-AD: State-Trait Anxiety Inventory for Adults
Reference and/or access link:
Spielberger, C.D., Gorsuch, R.L., Lushene, R., Vagg, P.R. and Jacobs, G.A. (1983). Manual for the State-Trait Anxiety Inventory. Palo Alto, CA: Consulting Psychologists Press