Bill Clinton body language at the independent council regarding the Monica Lewinski scandal.

Establishing a baseline is one of the most important steps in lie detection. A baseline is how a person typically talks, acts, or non-verbally communicates. When you recognize how a person acts under "normal" everyday conditions (the baseline) it is easy to detect a break in their behavior. You need to know how your partner looks, sounds, acts and behaves when she is telling the truth. Perhaps your partner bites her lips all the time, not just when she’s lying. A perfect example is when a