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Chris Street, a senior lecturer in cognitive psychology at Keele University, UK, researches lie detection and truth biases and is working to develop the first computational model of lie/truth judgments.
Tanner Laguatan “I think we all hope for some hidden secret ability to root out the truth by detecting subtle behaviors and tells,” says Street. “Reality is less forgiving. Across many research studies over the decades, our best estimate of people’s lie detecting ability is ever so slightly better than guessing, with an accuracy of 54 percent, when 50 percent could be achieved by guessing at random.” While there is research suggesting that liars give off behavioral cues—one influential paper claims that bluffers tend to tell simpler stories with narrower vocabulary and more negati...