Well, it could be the case of both approaches being not just valid but complementary. For example: persistent elevated levels of (nor)adrenaline or cortisol (both being hormones related to stress and trauma) caused by abuse could result in a neurological change. For what I know there could be a wide spectrum of causes, but as someone more apt with reading metabolic chains than facial expressions I can digest the chemical part much more swiftly and easily than by relation to personality problem on an emphatic level. As of the not telling people to 'get over' part, this is what I got from video. If there is a response from limbic (?) system, telling someone is not going to do anything good. That's like scolding kid with Tourette's and expecting improvement; failure to understand and address the issue from what I gather. Either way, I do appreciate your comment and information it provided me (and others) with to get some better understanding of it. :)