Multiple personalities are real; however, yes, they are faked, too. What I found fascinating was in some case studies, one personality would have one set of physical characteristics which would vary in another of their personalities. I.E. one smokes, another one doesn't. The most interesting one, though, was one personality had diabetes and another personality in that same subject did not. Those were verified by lab tests.

That leads me to believe that our minds are capable of much more than we think, that there is some way we can negate at least some of our physical ailments. But we would have to learn how to get into a totally different state of mind without it actually being a mental disorder of split personality.

My sister was a therapist (a damn good one) so I'm a bit more familiar with a lot of the psychological stuff than most people. My sis worked with me and I studied her methods and then used them on her when she needed help. I'm a mimic in that I can pick up things like that and do them from intuition. I've always been really good at reading body language.