Complex sentence: In classical Freudian psychoanalytic theory, child's identification with the same-sex parent is the successful resolution of the Oedipus complex and of the Electra complex; key psychological experiences that are necessary for the development of a mature sexual role and identity.
Split into simpler sentences: In classical Freudian psychoanalytic theory, a child's identification with the same-sex parent is the successful resolution of the Oedipus complex and of the Electra complex. This is a key psychological experience that is necessary for the development of a mature sexual role and identity.