He calls a 1996 "New York Times" advertisement by a consortium of pharmaceutical companies a "bald-faced lie": the group sought to say that the cause of psychosis and schizophrenia is an abnormal dopamine level and that their drugs worked by altering the level of dopamine. Whitaker then criticizes some American studies, and points out the work of George Crane at the National Institute of Mental Health to get tardive dyskinesia recognized, which up to that point had largely been touted as a symptom of schizophrenia, and he contrasts the dosages that British doctors were comfortable in prescribing (300 milligrams per day of Thorazine) with what American psychiatrists prescribed (1,500 up to perhaps 5,000 milligrams per day).