According to Psychology Today, NO! Michael Wheeler, a professor at Harvard Business School, and an expert on negotiation tactics, says one of the biggest myths about body language is the belief that eye contact – or lack of it – exposes a liar. Research shows that, more often than not, liars don’t avert their eyes - but many people still think they do. In fact, expert liars are very good at looking people straight in the eye when they’re being dishonest with them.
Wheeler says a far more reliable way of spotting a liar is to pay attention to their tone of voice. He says with the exception of true sociopaths – who are expert liars – most people sound tense when they fib. Their voices get higher-pitched. He says don’t confuse tone with verbal fumbling. People who are telling the truth tend to stumble over their words and have MORE imperfections in their speech. That comes from spontaneity – not deceit. Since they haven’t rehearsed what they were going to say – as a liar would, to make sure he had his story down pat. Also, liars tend to give more details than are necessary – or no details at all. They also use fewer hand gestures. So keep and eye out for those clues that you’re being deceived.