It could be argued that the shock procurement and the total detachment from previous life which it achieved both in the concentration camps and in American slavery emptied the super-ego or conscience of its contents.
Then, the creation of total dependence which followed could have resulted in infantile regression.

This would account for the childlike behavior of both "Sambo" and the camp inmates.

The slave master the camp guard, each in his own way, became a father figure, and the respective victims internalized the value system of this symbolic father.
The interpersonal school of psychology states that the determining factor in influencing personality development can be found in the estimation and expectation of "significant others." Those responsible for the physical and emotional security of an individual are his "significant others." For a child these are his parents.

As he matures, the number of "significant others" in one's experience increases.

This permits one to make decisions of one's own and to develop some individuality.
However, the child has already internalized the estimations and expectations of his parents, and this tends to shape his personality for rest of his life.