The Anxiety Control Questionnaire (ACQ) is a 30-item questionnaire that measures an individual’s level of agreement with a set of beliefs.
Each item is scored on a scale from 0 to 5 based on how much the statement is typical of the individual:
0 = Strongly disagree
1 = Moderately disagree
2 = Slightly disagree
3 = Slightly agree
4 = Moderately agree
5 = Strongly agree
Rapee, R. M., Craske, M. G., Brown, T. A., & Barlow, D. H. (1996). Measurement of perceived control over anxiety-related events. Behavior Therapy, 27(2), 279-293.