The document discusses the development in treatment and neurobiology of dissociative identity disorder (DID) and the legitimacy of the disorder. It features excerpts from Skype interviews with two experts: Dr. Bethany Brand, an expert in trauma, PTSD, and dissociative disorders who researches assessment, treatment, and malingering; and Dr. David Spiegel, who studies the cognitive control over somatic functions including response to trauma and the neurophysiological components of hypnosis.