This is the third in a series of reports on the “dual professional identity” of the social work-psychoanalyst based on findings from the “MPI” Project, an empirical study conducted at a large psychoanalytic training institute. The MPI study was designed to answer two questions: Do social work-psychoanalysts demonstrate the attributes of membership in the social work profession? Are social work-psychoanalysts distinguishable from their fellow psychoanalysts in psychology? The theoretical orientations of the social work- and psychologist-psychoanalysts in the MPI sample were investigated utilizing both self-reports of preferred theoretical schools and a structured research instrument, the “Theoretical Orientation Questionnaire.” With one exception, no statistically significant differences between the two disciplines were observed. The relevance of these findings to the claim promulgated by leaders in clinical social work that social workers practice a uniquely orientated psychotherapy is discussed.