Third Reality, the Multiple's Inner World

I came across this, another phrase for the Multiple Inner World:

Dissociative identities exist in a third reality (Kluft 1998, 2000) an inner world that is visualized, heard, felt and experienced as real.
This Third Reality is often characterized by trance logic. In trance logic, ideas and relationships of ideas about things in reality are not subject to the rules of normal logic. Because they are kept in separate "compartments" contradictory beliefs and ideas can exist together, they do not have to make sense. In this way the internal world contains many  subjectives that experience themselves as separate people. There is a pseudodelusional sense of separateness and independence (Kluft,1998). Trance logic is characteristic of dreams and hypnosis. Because of this freedom from logical critique, identities existing in a person's Third Reality may seem fantastical.
Understanding and Treating Dissociative Identity Disorder