There is an influential school of thought about trauma which argues that psychic trauma is the direct intrusion upon the mind of an unmediated experience. Cathy Caruth and Shoshana Felman are associated with this view.
As it is generally understood today, post-traumatic stress disorder reflects the direct imposition on the mind of the unavoidable reality of horrific events, the taking over of the mind, psychically and neurobiologically, by an event that it cannot control. (Caruth, p. 58)
Elaborated, this view holds that people do not have traumatic “experiences.” Traumatic events happen when people are unable to possess their own experiences in narrative form. The traumatized are deeply affected by these experiences, but unable to know them, for narrative is the language of experience.
In my experience, narrative competence is a poor measure of trauma.