“…If we look at the history of psychiatry it is only when, and only very recently, the discipline has followed the path of medical scientific enquiry, that we have gained knowledge. Neurofibrillary tangles in Alzheimer's disease, lithium for bipolar disorder, cognitive–behavioural therapy for traumatic stress disorders, methylphenidate for attention-deficit hyperactivity disorder, therapeutic communities for personality disorder; the advances here have all been made by following systematic independent evaluation, including personal stories (Seeman 2006), qualitative and observational studies. All NICE guidelines follow the same approach and there is no difference in the form of this evaluation between medical and psychiatric disorders.…”