" The often dramatic differences among the personalities are more an arresting epiphenomenon than the core of the condition. Characterological factors, cultural influences, imagination, intelligence, and creativity make powerful contributions to the form taken by the personalities. Most DID patients are rather muted compared to those cases incorrectly assumed to epitomize the condition (Kluft, 1985b). The personalities enact adaptational patterns and strategies that developed in the service of defense and survival. Once this pattern, which disposes of upsetting material and pressures rapidly and efficiently, is established, it may be repeated again and again to cope with both further overwhelming experiences and more mundane developmental and adaptational issues. "

― , Handbook of Dissociation: Theoretical, Empirical, and Clinical Perspectives