Edward Norton and Jim Carrey might be charming actors, but their film portrayals of people with multiple personalities aren’t even close to accurate.

Ever zoned out while driving or felt like you were watching your life from outside your body? You're not alone. This video explains dissociation, a common but often misunderstood experience.

Dissociative identity disorder develops when person fails to form a total personality that integrates all aspects of yourself and your emotions. For more on dissociative states watch this video on depersonalization. What Is...