Micro expressions can occur either as the result of conscious suppression or unconscious repression of emotions. As such, spotting micro expressions (or analyzing facial expressions) is key to learning how to detect lies, unveiling concealed emotions, and deception.
It is important to note that the micro expression looks the same whether it is the result of suppressed or repressed emotions.
The micro expression does not itself tell us which it is; that must be determined by the context in which it occurs, and often requires further questioning.
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