Maria, an adolescent with a history of sleepwalking, is diagnosed as having dissociative identity disorder (DID). She was severely abused as a child and, in response, has developed three distinct personalities. She has no gaps in her memory. What aspect of Maria's case is unusual for DID?
1) Having no gaps in her memory
2) Being diagnosed with DID
3) Developing three distinct personalities
4) Being severely abused as a child