This is the authoritative, bestselling guide that professionals and students turn to for a complete introduction to motivational interviewing (MI), the powerful approach to facilitating change. The book elucidates the four processes of MI - engaging, focusing, evoking, and planning - and vividly demonstrates what they look like in action. A wealth of vignettes and interview examples illustrate the "dos and don'ts" of successful implementation in diverse contexts. Highly accessible, the book is infused with respect and compassion for clients. The companion Web page provides additional helpful resources, including reflection questions, an extended bibliography, and annotated case material. New to This Edition: * reflects major advances in understanding and teaching MI * fully restructured around the new four-process model * all chapters now authored by Miller and Rollnick * additional case examples and counseling situations * reviews the growing evidence base and covers ways to assess MI fidelity.