The psychoanalytic theory of Melanie Klein, part 3

Also important to Melanie Klein's psychoanalytic theory is the concept of the part-object. The part-object becomes important in the primitve defense mechanism known as "splitting." According to this concept, one element of the object is so emphasized that it comes to embody the concept, ignoring its other potentially contrasting qualities. Everything that contradicts the emphasized bad feature becomes eclipsed by the badness, and this bad object becomes exclusively bad rather than possessing some good...