1. Micro Expressions – These are tiny, quick facial expressions that show true emotions before someone hides them. - Example: They say, “I’m fine,” but for a split second, their eyebrows pull together or lips tighten meaning they’re actually upset. 2. Baseline Behavior – Everyone has a natural way of acting when they’re honest. If that suddenly changes, it’s a red flag. - Example: Your friend usually talks a lot and makes eye contact. But when you ask about missing money, they suddenly get quiet