I have read where there is a predisposition to dissociation. My son has always dissociated, and there was no severe abuse or trauma, yet he used dissociation for coping as a small child and still does. He is not DID. There is a difference. I now believe that my mother has a dissociative disorder, though not DID. There was abuse in her childhood as was in my grandmother's--some sever, but no one talks about it.