The novel The Catcher in the Rye written by JD Salinger, describes a boy named Holden Caulfield whose psyche ultimately affects his mental state. Over the course of the novel, Holden's mental state is gradually affected by this damaged psyche. It demonstrates the id or superego, and rarely its ego. Holden's psyche appears in the forms Id, Superego and Ego. The id operates on impulses and desires immediate gratification. This occurs when Holden has Sunny, a prostitute, come to his room. Holden says to Maurice, the elevator attendant, “Okay,” I said. It was against my principles and everything, but I felt so depressed I didn't even think about it” (page 91). Holden felt so depressed that he wasn't even sure what he agreed to and regretted it after accepting. Holden accepts Maurice's offer to send a prostitute to his room without thinking about it first, which was an impulse his brain had. The id also appears whenever Holden drinks and smokes. Holden “…sat on the bed and smoked another cigarette. It tasted gross. I must have smoked about two packs since I left Pencey” (page 100). The id is saying...