Review of "Common Factors," Personal Reflections, and Introduction of the Shaving Brush Model of Integrated Psychotherapies.

This column reviews and updates "common factors" in psychotherapy, as originally described by Saul Rosenzweig in 1936. The author, a psychiatrist who has used multiple modalities of psychotherapeutic treatment over 4 decades, shares personal reflections concerning these "common factors" and introduces a model of integrated psychotherapies named for his grandfather's shaving brush.