Shows about Jeffrey Dahmer, The Night Stalker and other well-known serial killers have become widely popular in recent years and, while the curiosity may seem morbid, experts say there is a biological reason for it.An expert revealed that watching true shows is our way of preparing for similar situations in the real world. Such content 'can have a learning component to it or at least a perceived learning component,' said Coltan Scrivner, a research scientist at Denmark's Recreational Fear Lab.
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