Mar 13, · Microexpressions are very fast facial expressions of emotions. They last only up to seconds, while regular facial expressions of emotions (macroexpressions) are . The FACS as we know it today was first published in , but was substantially updated in Using FACS, we are able to determine the displayed emotion of a participant. This analysis of facial expressions is one of very few techniques available for assessing emotions in real-time (fEMG is another option). Other measures, such as interviews.
Facial expressions can explain a lot about what's going on in one's mind. As humans, we are able to express our emotions through our words as well as actions. Our body language sometimes becomes a dead giveaway to the real emotions we are going through in our mind. Our eyes, the slight tremor of our lips, the crumpling nose, etc., all express our hidden emotions unconsciously. Facial expressions aren't the only clue. Because deception is a social act involving language, researchers are also studying liars' verbal and written output to find distinctive patterns. DePaulo and Morris say that liars take longer to start answering questions than truth-tellers--but when they have time to plan, liars actually start their answers more quickly than truth-tellers.