1. Start by asking neutral questions.
2. Find the hot spot.
3. Watch body language.
4. Observe micro-facial expressions.
5. Listen to tone, cadence, and sentence structures.
6. Watch for when they stop talking about themselves.
People who are lying will also sometimes start removing themselves from their story, and start directing the focus on other people. You will hear fewer me’s and I’s as liars try to psychologically distance themselves from the lie that they’re weaving.
Remember: Everyone has different “lying behavior” so there is no one guaranteed lie-detection method. It’s most important to be able to compare a liar’s baseline behavior to the body movement, facial expressions, eye movement, and verbal cues that they use when they are telling a lie.