Psychoanalysis

Although there are some bodies of thought in psychology without Sigmund Freud in their legacy, most can be traced back to his work starting in the 1880s in Vienna. Trained as a neurologist, Freud began noticing neurological problems in patients that had no discernible biological basis. Seeing blindness, paralysis and anorexia with no apparent physical cause, he looked towards the mind for answers. Finding some evidence that those who were mentally ill could exhibit physical symptoms, he discovered colleagues and teachers who were equally perplexed and interested in such matters like Josef Breuer and Jean-Martin Charcot.

Freud opened up a private practice in 1886 until 1896 that mostly treated women who showed symptoms of hysteria (which, at that time, was very loosely defined). Using such techniques as dream interpretation, free association, transference and analysis of the id, ego and superego, his colleagues developed a system of psychotherapy termed psychoanalysis. Students and colleagues of his such as Alfred Adler, Otto Rank, and Carl Jung became psychoanalysts themselves, and formed their own differentiating systems of psychotherapy. These were all later termed under a more broad label of psychodynamic, meaning anything that involved the psyche's conscious/unconscious influence on external relationships and the self. Psychodynamic psychotherapy and psychoanalysis are considered to be particularly effective at treating certain mental disorders, such as personality disorders and mood disorders. However, these methods require hundreds of sessions over a period of several years.

Current psychodynamic approaches continue to develop and change. Contemporary Freudian approaches usually retain Freud's emphasis on sexuality, aggression, and mental conflict, and often prefer insight-oriented, uncovering psychotherapy to more supportive techniques. Contemporary Freudians, for the most part, continue to believe that psychotherapy is most effective when it leads to increased self-knowledge on the part of the patient. Other current psychodynamic approaches—such as object-relational and self-psychological approaches—prefer techniques designed to change the patient's habitual patterns of living by building an especially authentic or supportive relationship with the analyst that is believed to help the patient learn new ways of relating to others and to life in general.

The psychoanalytic community has recently begun to put extensive effort into researching the efficacy and process of psychoanalytic treatment.