The best (and worst) ways to spot a liar

What works: * Use open questions. * Employ the element of surprise. * Watch for small, verifiable details. * Observe changes in confidence.

What people think works (but doesn't): * Watch for certain body language * Watch for certain eye movements

Just how badly does the old way work: "According to one study, just 50 out of 20,000 people managed to make a correct judgement with more than 80% accuracy. "