Transpersonal psychology (TP) evolved from within the humanistic psychology movement of the 1960s in California. Influential figures have included Abraham Maslow, Anthony Sutich, Roberto Assaglioli, Stanislav Grof, and Ken Wilber. TP has, in general, advocated a spiritual view of physical and mental health not addressed by other disciplines of psychology. In their review of the diverse TP literature, Glen Hartelius and colleagues defined TP as being a beyond-ego psychology (i.e., beyond “ordinary” states of minds via paths of meditation and mysticism), as an integrative/holistic psychology of the whole person in an interconnected world, and as a catalyst for personal (self-actualization, psychospiritual growth, embodied knowledge) and social transformation. The therapeutic importance of modifying consciousness and acting on innate impulses for spiritual growth is emphasized.