TY - BOOK AU - McQueen,Victor TI - The 10 worst psychopaths: the most depraved killers in history SN - 9781784282516 PY - 2016/// CY - London PB - Arcturus Publishing KW - Psychopaths KW - History KW - Criminals KW - Criminal psychology N1 - Includes index N2 - TRUE CRIME. Often, the term 'psychopath' tends to be equated with violent and deranged criminality, but true psychopaths are very different from the way they are portrayed in film or on television. They are aware of the difference between right and wrong: they simply choose to ignore anything that prevents them getting what they want. Real-life psychopaths are not 'mad' but 'bad', but they appear on the surface to be entirely 'normal'. One of the pioneers of the modern research effort was Dr. Robert Hare, who developed the Psychopathy Check List Revised (PCL-R) in an attempt to describe the degree of psychopathy an individual displays. The clusters of personality traits and socially-deviant behaviours outlined in the check-list are separated into four types: interpersonal, affective, lifestyle and anti-social ER -