Freud was searching here for a psychological factor that would honor the fact that it is not trauma that splits the psyche, but a feared meaning of trauma to the individual that leads to this result. This meaning must be found, reasoned Freud, in a universal unconscious fantasy
Kalsched argues that Freud’s shift away from the seduction theory was driven by the recognition that neurosis requires not external trauma alone but a universal unconscious fantasy — a ‘Kerncomplex’ — that gives that trauma its pathogenic meaning.
, The Inner World of Trauma: Archetypal Defences of the Personal Spirit, 1996thesis