"The division of the personality in trauma involves three major prototypical subsystems of traumatized individuals' personality: more or less trauma-ignorant and trauma-ignoring apparently normal parts, fragile emotional parts, and controlling emotional parts. The link lies in the difficulty to integrate and realize traumatic experiences and their consequences, particularly when it comes to the immense problem of chronic childhood traumatization." 
E. Nijenhuis in The Trinity of Trauma: Ignorance, Fragility, and Control (2015)