The role of feedback in the process of health behavior change.

OBJECTIVE: To offer a taxonomy of types of feedback and describe potential mechanisms of action particularly in the area of addictive behaviors. METHOD: Reviewed the literature to examine support for types-Generic, Targeted, and Personalized-and for mechanisms of feedback. RESULTS: Although it is not clear how it works, feedback is thought to offer important information, to create a sense of caring and helping relationship, to reach more directly decisional considerations, to increase engagement in the materials, to increase motivation, or to provide social comparison and norms. CONCLUSIONS: Avenues for future research in search of the most effective manner of using feedback to promote health behavior change are discussed.