The RCI—10, developed by Everett L. Worthington, Jr. and his colleagues, uses 10 items rated on a 5-point scale to measure religious commitment (Worthington et al., 2003).
Each item is rated from not at all true of me (1) to totally true of me (5).
A sample item is “I often read books and magazines about my faith.”
Link to List of Tests
Worthington, E.L., Jr., Wade, N.G., Hight, T.L., Ripley, J.S., McCullough, M.E., Berry, J.W. et al. (2003). The Religious Commitment Inventory—10: development, refinement, and validation of a brief scale for research and counseling. Journal of Counseling and Psychology, 50, 84-96.