Sigmund Freud was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating pathologies seen as originating from conflicts in the psyche, through dialogue between patient and psychoanalyst, and the distinctive theory of mind and human agency derived from it.

In classical psychoanalytic theory, the Oedipus complex refers to a son's sexual attitude towards his mother and concomitant hostility toward his father, first formed during the phallic stage of psychosexual development. A daughter's attitude of desire for her father and hostility toward her mother is referred to as the feminine Oedipus complex. The general concept was considered by Sigmund Freud in The Interpretation of Dreams (1899), although the term itself was introduced in his paper A Special Type of Choice of Object made by Men (1910).