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  • "Cri­minal Psychopaths showed reduced activation in brain when processing emotional facial expressions." RxPG News. Dec. 1, 2006.
  • "Psychopaths' brains 'different'." BBC News. Dec. 4, 2006.
  • Ramsland, Katherine. "All About Dr. Robert Hare: Expert on the Psychopath." CourtTV Crime Library.
  • Ryan, Caroline. "What makes a psychopath?­" BBC News. Sept. 18, 2003.