The suggestion that dissociative identity disorder symptoms are created as defenses against the anxiety caused by one's own unacceptable impulses best illustrates the:

The answer is psychoanalytic perspective. It was developed by Sigmund Freud that pertains to the unconscious forces. 

Psychoanalytic theory is the hypothesis of identity association and the elements of identity improvement that aides analysis, a clinical technique for treating psychopathology. In the first place laid out by Sigmund Freud in the late nineteenth century, psychoanalytic theory has experienced numerous refinements since his work.