*A to Z revision of a bestseller (250,000 in print); the bible of a proven, highly effective therapeutic technique. *Enjoys worldwide popularity; off-the-shelf and text sales are bolstered by author workshops and frequent MI training events. *Reorganized around the co-creators' evolving framework for teaching and implementing MI. *Strong demand for MI titles: originally developed for treating addictions, the approach is now widely used throughout mental health and health care. *Value-added online supplement includes case material, an extended bibliography, and reflection questions for in-class or training discussions.