Lots More Information

Related HowStuffWorks Article­s

• How Serial Killers Work
• How Jack the Ripper Worked
• How Police Interrogations Work
• How Crime-scene Investigation Works

More Great Li­nks

• BBC News: What makes a psychopath?
• CourtTV Crime Library: Psychopathy
• RxPG News: Criminal Psychopaths showed reduced activation in brain when processing emotional facial expressions

Sources

• "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.