Also known as Rogerian psychotherapy after Carl Rogers. The mental health clinician facilitates a trusting relationship between her/him and the client, and treatment is self-directed. The hallmark factor is known as "unconditional positive regard" defined by nonjudgmental listening, empathy, and positive self-regard instilled in the client. The client is seen as fully potential of growth and as a "good" entity with the authority for himself. While person-centered itself is not evidenced-based, it is a critical part to effective mental health counseling.