Klaus is 18 years old and, like all adolescents, is trying to figure out who he is. He wants to know why he thinks, feels, and acts the way he does; that is, he wants to define his . Klaus decides to read about the various personality theorists, beginning with , who believed that most of the mind is hidden from view, and is therefore , and that personality is a product of the between our basic sexual and aggressive impulses, directed by the , and the social restraints derived from the . After reading about psychoanalytic theory, Klaus decided that his long-standing aggressive behavior toward his younger brother could have been a result of his anger with his parents for being so strict, and that this protects him from the he might feel if he were to express that anger. Perhaps the part of his personality called the redirects his anger, and so the hitting of his brother is a mechanism called . Klaus also thought that perhaps he had his behavior by saying that his brother needed the discipline.
