Psychosexual development character Oedipus, who unwittingly killed his father, Laius, and sexually possessed his mother, Jocasta. Analogously, in the phallic stage, a girl's decisive psychosexual experience is the Electra complex, her daughter–mother competition for psychosexual possession of father. This psychological complex derives from the 5th-century BC Greek mythologic character Electra, who plotted matricidal revenge with Orestes, her brother, against Clytemnestra, their mother, and Aegisthus, their stepfather, for their murder of Agamemnon, their father, (cf. "Electra", by Sophocles). Initially, Freud equally applied the Oedipus complex to the psychosexual development of boys and girls, but later developed the female aspects of the theory as
Oedipus complex ideal of the individual and they strive to take on their knowledge, skills, or insights. In "Some Reflections on Schoolboy Psychology" (1914), Freud writes: The Oedipus complex, in narcissistic terms, represents that an individual can lose the ability to take a parental-substitute into his ego ideal without ambivalence. Once the individual has ambivalent relations with parental-substitutes, he will enter into the triangulating castration complex. In the castration complex the individual becomes rivalrous with parental-substitutes and this will be the point of regression. In "Psycho-analytic notes on an autobiographical account of a case of paranoia (Dementia paranoides)" (1911), Freud writes that