“It’s common for shooters to want to study other shooters,” Langman said. Langman’s 2010 book, Why Kids Kill: Inside the Minds of School Shooters, profiles 10 shooters and breaks them down into three personality types: psychopathic, psychotic and traumatized shooters. “There must be some desire for self-understanding,” said Langman, who has spent decades studying the psychology of school shooters, has written several books and maintains an online research archive on school shooters. He says in his research that both US and international school shooters can be broken down into these three groups. “I think he was right and correctly identified himself as a psychopathic personality from my book,” Langman said.

Source: The Guardian July 23, 2016 16:11 UTC