"Clinical Psychology" discusses the evolving nature of the history of psychology while demonstrating the use of research and statistics. Obsessive compulsive disorder is discussed in detail along with the case of music icon Elvis Presley. Managed health care is the backbone to the clinical health care system. The family structure can be to blame for mental illness as treatment of just an individual may not be as successful as meeting and treating a family as a single cohesive unit. Many may believe clinical psychology to be the only sub-discipline of the broader field, yet it should be understood it is just one aspect of psychology.