Measures of fidelity in motivational enhancement: a systematic review.

The movement to use empirically supported treatments has increased the need for researchers and clinical supervisors to evaluate therapists' adherence to and competence in particular empirically supported interventions. Motivational interviewing (MI) is an empirically supported intervention for substance abuse and other behavioral problems. However, for this intervention to work, it must be provided with fidelity and skill. This article provides a systematic review of MI adherence and competence measures that have been developed and described independently elsewhere. Recommendations for refinement of the measures and future research are also discussed.