![]() You might also notice a creak in someone’s voice. Tone of VoiceĪ high-pitched voice: When people are nervous, the muscles in the vocal cords might tighten up (an instinctive response to stress), leading the voice to sound very high-pitched, says Glass. Get the latest career, relationship and wellness advice to enrich your life: sign up for TIME’s Living newsletter. Sweating or dryness: Autonomic nervous system changes can trigger liars to sweat in the T-area of the face (upper lip, forehead, chin and around the mouth) or have dryness in the mouth and eyes - the person might excessively blink or squint, lick or bite their lips or swallow hard, according to Glass. “It’s an instinctive reflex meaning you don’t want to speak,” she says.Ĭhange in complexion: Ever notice someone go white as a ghost when speaking? That could be a sign of untruthfulness, says Glass, who says this signals blood rushing out of the face. Pursing the lips could also mean someone doesn’t want to engage in the conversation at hand, says Glass. The research conducted at UCLA found that people who lie are more likely to purse their lips when asked sensitive questions. ![]() “It’s been my experience that, when people do that, they’re holding back emotions or facts,” she says. The mouth: Rolling the lips back to the point where they almost disappear could be a sign someone is lying by omission, according to Traci Brown. And while there is a possibility of reading too much into someone’s mannerisms, Glass maintains that there is some truth to be gleamed from the eyes. A 2012 study published in Plos One debunked the concept that people look in a specific direction when they are dishonest. There is still some debate over this, however. The 2015 study conducted by the University of Michigan also found that those who lied were more likely to stare than those who were truthful - so much so that 70% of the clips of people lying showed them staring directly at the people they were lying to. The research conducted by Geiselman at UCLA corroborated this, finding that people sometimes look away briefly when lying. The eyes: Someone who is lying might stare or look away at a crucial moment, says Glass - a possible sign they’re moving their eyes around as they try to think about what to say next. Edward Geiselman drew a similar conclusion, finding that people tend to display “grooming behaviors,” such as playing with their hair, when being dishonest. Research conducted by UCLA psychology professor R. When people are nervous, these fluctuations in the nervous system can prompt people to feel itches or tingles in their body, which in turn can cause more fidgeting, she explains. Fluctuations in the autonomic nervous system, which regulates bodily functions, can also have an effect, she says. Itching and fidgeting: Rocking the body back and forth, cocking the head to the side or shuffling the feet can also be signs of deception, says Glass, who completed a post-doctoral fellowship at UCLA focusing on Psychology and Verbal and Non-Verbal Communication. “They may put them in their pockets or even slide them under the table.” ![]() It’s an unconscious signal that they’re holding back information, emotions or even lying, she says. When people are being dishonest, they also tend to face their palms away from you, says Traci Brown, who regularly gives keynote speeches at financial institutions to help them detect and prevent fraud. The study found that those who lie are more likely to gesture with both of their hands than those who are telling the truth - people gestured with both of their hands in 40% of the lying clips, compared to 25% of the truthful clips. “So normal gesturing that might normally happen just before a statement happens after the statement.”Ī 2015 study conducted by the University of Michigan looked at 120 media clips of high-stakes court cases in order to understand how people behave when lying versus when they’re being truthful. “The mind is doing too many things including making up the story, figuring out if they’re being believed and adding to the story accordingly,” she says. The hands: Liars tend to use gestures with their hands after they speak as opposed to during or before a conversation, says Traci Brown, who has participated in a deception training program with members of the FBI and occasionally helps work on investigations. ![]()
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