Motivational interviewing (MI) is a counseling approach developed in part by clinical psychologists William R. Miller and Stephen Rollnick. It is a directive, client-centered counseling style for eliciting behavior change by helping clients to explore and resolve ambivalence. Compared with non-directive counseling, it is more focused and goal-directed, and departs from traditional Rogerian client-centered therapy through this use of direction, in which therapists attempt to influence clients to consider making changes, rather than engaging in non-directive therapeutic exploration. The examination and resolution of ambivalence is a central purpose, and the counselor is intentionally directive in pursuing this goal. MI is most centrally defined not by technique but by its spirit as a facilitative style for interpersonal relationship.