Identifying a Dissociative Disorder

In clinical psychology, dissociative disorders are characterized by disruptions in consciousness, memory, identity, or perception. When examining the different categories of dissociative disorders, psychologists classified a specific disorder that involves the presence of two or more distinct personality states, each with its own enduring pattern of perceiving, relating to, and thinking about the environment and self. This disorder often arises as a result of severe trauma, often during childhood, and is accompanied by gaps in memory of everyday events and personal information. Which of the following terms specifically describes this disorder?