Freud's most influential discovery was the importance of what he called psychic reality in the functioning of the mind. Melanie Klein has mined thoroughly the vein of mental life that he discovered, and the results of her work have had an impact on psychoanalytic thinking throughout the world. In this text, Dr Caper shows how Melanie Klein's studies of sexuality, aggression, unconscious phantasy and identification in children, both extended and corrected Freud's theories of the early development of the superego and the early stages of the Oedipus complex in both boys and girls. Klein's...