Everyone worries from time to time, and many people consider themselves worriers. Worries are usually a “what if'' question about something terrible happening in the immediate or distant future. Examples could be: “What if we get caught in traffic tomorrow and I’m late for the game? The coach will be so angry at me and kick me off the team.” “What if I choose the wrong topic for my essay and then change my mind halfway through, and then it’s too late, and I do a really crappy job?” The PSWQ is a self-report scale designed to measure worry in adults.
Meyer, T. J., Miller, M. L., Metzger, R. L., & Borkovec, T. D. (1990). Development and validation of the penn state worry questionnaire. Behavior Research and Therapy, 28, 487-495.