Psychoanalysis was perhaps the first specific school of psychotherapy, developed by Sigmund Freud and others through the early 20th century. Trained as a neurologist, Freud began focusing on problems that appeared to have no discernible organic basis, and theorized that they had psychological causes originating in childhood experiences and the unconscious mind. Techniques such as dream interpretation, free association, transference and analysis of the id, ego and superego were developed.
Behaviorism developed in the 1920s, and behavior modification as a therapy became popularized in the 1950s and 1960s. Notable contributors were Joseph Wolpe in South Africa, M.B. Shipiro and Hans Eysenck in Britain, and John B. Watson and B.F. Skinner in the United States. Behavioral therapy approaches relied on principles of operant conditioning, classical conditioning and social learning theory to bring about therapeutic change in observable symptoms. The approach became commonly used for phobias, as well as other disorders.
Postmodern psychotherapies such as Narrative Therapy and Coherence Therapy did not impose definitions of mental health and illness, but rather saw the goal of therapy as something constructed by the client and therapist in a social context. Systems Therapy also developed, which focuses on family and group dynamics—and Transpersonal psychology, which focuses on the spiritual facet of human experience. Other important orientations developed in the last three decades include Feminist therapy, Brief therapy, Somatic Psychology, Expressive therapy, applied Positive psychology and the Human Givens approach which is building on the best of what has gone before.
Child psychotherapy is another form of psychotherapy that comes from the need of counseling and psychotherapy to be adapted to meet the developmental needs of children. Child psychotherapy has its foundation in the work of Freud. Early pioneers in the field include Hermine Hug-Hellmuth, Anna Freud, and Melanie Klein. These pioneers are widely considered to have shaped child psychotherapy in a significant manner.