- Ignoring context: Crossed arms don’t mean much if the room is cold or the chair they’re sitting in doesn’t have armrests.
- Not looking for clusters: It’s a consistent grouping of actions (sweating, touching the face, and stuttering together) that is really going to tell you something.
- Not getting a baseline: If someone is always jumpy, jumpiness doesn’t tell you anything.
- Not being conscious of biases: If you already like or dislike the person, it’s going to affect your judgment.
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