Abstract
A motivational action plan (MAP) was developed in the Women's Intervention Nutrition Study to support the use of patient-centered counseling on the basis of motivational interviewing (MI) to promote adherence to the low-fat (<20% kcal fat) diet intervention. The MAP evaluates psychosocial factors including self-efficacy, behavioral intentions, and social support, and key MI constructs of importance and confidence. Psychosocial factors assessed by MAP were conceptually related to the stages of change model and to the self-reported perception of adherence, suggesting that MAP is a valid tool for assessing an individual's process of behavior change. Clinical application of MAP is discussed.