This document discusses microexpressions and how to detect lies based on facial expressions and body language. It defines microexpressions as brief, involuntary facial expressions that last 1/15 to 1/25 of a second and occur in high-stakes situations. There are seven universal emotions that can be expressed in microexpressions - anger, disgust, happiness, surprise, fear, sadness, and contempt. The document claims that microexpressions and body language can reveal a person's true emotions and whether they are lying, as these expressions are difficult to fake. It provides examples of body language cues like fidgeting, rapid blinking, and inconsistent details that may indicate someone is lying.
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