Young children who experience intense traumas that are too overwhelming for their brain to comprehend have a natural defence mechanism for survival: dissociation. This can result in a dissociative identity disorder in which different personality parts develop between which memory walls exist. In satanic ritual abuse, this coping mechanism is used by perpetrators to deliberately create personality parts. They do this by deliberately creating a situation that is unbearable for the victim, thus creating a split personality. The split-off personality part is then trained for a certain task, in service of the cult. If he/she does not perform this task, the memories of this torture are triggered and relived, causing, among other things, strong feelings of fear to surface and an intense inner struggle, in which the only solution seems to be obedience to the perpetrators. Without help (safety, trauma treatment, support) it is almost always impossible for these personality parts to resist their programming and they are, as it were, forced to carry out their task. Such a task, learned under torture (extreme conditioning), can be, for example: immediately open the door when a certain perpetrator is at the window, always accept and use bags of pills or powder that are offered in the street and are handed out in passing.
For further explanation on programmed DIS see this interview.