One can usually look at a person and tell what that person is feeling in a general sense. You come across your friend and they have a look on their face that says they had a bad day, or maybe they are smiling and even before they've told you what event transpired, you know that it was good. They are expressing their emotional state through the contractions of their facial muscles. As with all forms of communication, the meanings in these expressions can, and will, vary depending on the observers frames of reference and conceptual filters.
Microexpressions are brief involuntary facial expressions lasting anywhere from 1/25 of a second to a full second. They also are difficult to fake. Microexpressions express seven universal emotions, disgust, anger, fear, sadness, happiness, surprise, and contempt. These will be discussed in the following posts in detail.
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