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L Is for Look for Deviations: Behavioral Incongruence

In this chapter I will provide you with a framework for observing body language—postures, gestures, and facial expressions—the meanings they often carry, and how they can indicate deception. When reading body language, you need to look at the entire body, from the feet to the forehead, so make sure you can see the entire body when you’re observing someone.

When I was training Department of Defense personnel, I would sometimes sit in the back of the room and observe the students (who had no idea yet who I was) during an exercise we created for them called “Impromptus.” Each student would be required to stand in front of the class and defend a random, controversial, and even embarrassing opinion ...

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