Electra complex classical psychoanalytic theory, the child's identification with the same-sex parent is the successful resolution of the Electra complex and of the Oedipus complex; his and her key psychological experience to developing a mature sexual role and identity. Sigmund Freud instead proposed that girls and boys resolved their complexes differently—she via penis envy, he via castration anxiety; and that unsuccessful resolutions might lead to neurosis. Hence, women and men who are fixated in the Electra and Oedipal stages of their psychosexual development might be considered "father-fixated" and "mother-fixated". As a psychoanalytic term for daughter–mother psychosexual conflict, the Electra complex derives from
Oedipus complex envy. "Oedipus" refers to a 5th-century BC Greek mythological character Oedipus, who unwittingly kills his father, Laius, and marries his mother, Jocasta. A play based on the myth, "Oedipus Rex", was written by Sophocles, ca. 429 BC. Modern productions of Sophocles' play were staged in Paris and Vienna in the 19th century and were phenomenally successful in the 1880s and 1890s. The Austrian psychiatrist, Sigmund Freud (1856–1939), attended. In his book "The Interpretation of Dreams" first published in 1899, he proposed that an Oedipal desire is a universal, psychological phenomenon innate (phylogenetic) to human beings, and the cause of much