“An ethnography that is both sweeping and meticulously fine-grained as it follows the remarkable dissemination of MI across fields of professional practice. . . . In Working the Difference, Carr brings together a dazzling array of literatures to speak to audiences across multiple anthropological subfields—linguistic, medical, psychological, and sociocultural—as well as practitioner–researchers like her interlocutors. In speaking directly to this latter audience, the author makes a profound contribution to the anthropology of expertise and ethnographic endeavors to ‘study up’ . . . Despite the author's modest self-deprecation about her own Motivational Interviewing skill, Carr's skill as an ethnographic interviewer is on full display.”