Phallic stage the female aspect of phallic-stage psychosexual development as the feminine Oedipus attitude and the negative Oedipus complex; but his student–collaborator Carl Jung proposed the "Electra complex", derived from Greek mythologic character Electra, who plotted matricidal revenge against her mother for the murder of her father, to describe a girl's psychosexual competition with her mother for possession of her father. Despite mother being the parent who primarily gratifies the child's desires, the child begins forming a discrete sexual identity — "boy", "girl" — that alters the dynamics of the parent and child relationship; the parents become the focus of infantile libidinal
Oedipus complex mother and directs jealousy and emotional rivalry against his father—because it is he who sleeps with his mother. Moreover, to facilitate union with mother, the boy's id wants to kill father (as did Oedipus), but the pragmatic ego, based upon the reality principle, knows that the father is the stronger of the two males competing to possess the one female. Nonetheless, the boy remains ambivalent about his father's place in the family, which is manifested as fear of castration by the physically greater father; the fear is an irrational, subconscious manifestation of the infantile id. "Psycho-logic defense"—In both sexes, defense