Explain the distinction between dissociative amnesia and dissociative identity disorder.

Dissociative amnesia involves extreme memory loss caused by extensive psychological stress.People experiencing dissociative amnesia remember everyday tasks like how to hail a cab and use a phone.They forget only aspects of their own identity and autobiographical experiences.In dissociative identity disorder, formerly called multiple personality disorder, two or more distinct personalities are present in the same individual.Each identity has its own memories, behaviors, and relationships.One identity dominates at one time, another takes over at another time.Individuals sometimes report that a wall of amnesia separates their different identities; however, research suggests that memory does transfer across these identities, even if the person believes it does not.The shift between identities usually occurs under distress but sometimes can also be controlled by the person.