Oedipus complex
Initially, Freud equally applied the Oedipus complex to the psychosexual development of boys and girls, but later modified the female aspects of the theory as "feminine Oedipus attitude" and "negative Oedipus complex"; yet, it was his student–collaborator Carl Jung, who, in his 1913 work, "Theory of Psychoanalysis", proposed the Electra complex to describe a girl's daughter–mother competition for psychosexual possession of the father.