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This undated photo provided by ScareHouse shows an exterior shot at the ScareHouse haunted attraction in Pittsburgh. Margee Kerr, a sociologist who studies fear and has written a book called "Scream: Chilling Adventures in the Science of Fear," works at Scarehouse analyzing visitor responses to the attraction. (Scarehouse via AP)
Associated Press | October 15, 2015 2:06 pm
Book explains why Halloween attractions make us “Scream”