Oedipus complex desire (libido) for mother, and aggression towards father, student–collaborator Carl Jung counter-proposed that girls experienced desire for father and aggression towards mother via the Electra complex—derived 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, her father (cf. "Electra", by Sophocles). Moreover, because it is native to Freudian psychology, orthodox Jungian psychology uses the term "Oedipus complex" only to denote a boy's psychosexual development. In classical Freudian psychology the super-ego, "the heir to the Oedipus complex", is formed as the
Oedipus complex primary erogenous zone; thus, when children become aware of their bodies, the bodies of other children, and the bodies of their parents, they gratify physical curiosity by undressing and exploring themselves, each other, and their genitals, so learning the anatomic differences between "male" and "female" and the gender differences between "boy" and "girl". "Psychosexual infantilism"—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 objects of infantile libidinal energy. The boy directs his libido (sexual desire) upon his