The Doris Fischer case concerns a woman with multiple personalities dating back to the age of three. Some of the personalities were created from traumatic events, others the origins of are unknown. This case is remarkable because it involves a personality that is a subliminal co-conscious personality that can co-exist at the same time as another personality and can take over when necessary. Doris was under observation daily and hourly for almost four years. In all Doris is said to have five separate personalities. Each personality and the actions of each is discussed in detail by Dr. Prince.