spotting a liar

Is noticing lies told by others, really possible, without the use polygraphs or computers? According to James Geary, yes. In his article “How to Spot a Liar,” he explains how it is possible for a human to catch small details in a persons face and voice when lying. Just by careful analyzing these features, a person can accurately determine is they are being told a lie. Here is how…
When a person is drying to deceive someone they typically are nervous. “Polygraphs, for instance, measure respiration, heart rate and skin conductivy, which tend to increase when people are nervous-as they usually are when lieing.” But humans cannot detect these with muc...