According to our textbook, Wrightman’s Psychology and the Legal System, M’Naghten had paranoid delusions. He believed that the Prime Minister, Robert Peel, was aligned with the Tory Party in a conspiracy against him. He tried to run, but when that didn’t do the trick, he returned and stalked the Prime Minister. He later shot a man, who he believed to be the Prime Minister, but he actually killed the private security of the British Prime Minister. He was charged with murder, but after a couple of days of medical experts testifying, he was found not guilty by reasons of insanity (NGRI). (Greene & Heilbrun, 2011 pg.210) Our text describes the M’Naghten rule as “The jury ought to be told in all cases that every man is to be presumed to be sane, and to possess a sufficient degree of reason to be responsible for his crimes, until the contrary be…