Cognitive scientists define emotions as powerful, usually short-lived experiences that are a reaction to a specific stimulus. As part of the human evolutionary legacy, emotions arise from a rapid appraisal of an object or event’s significance in order to prepare us for action—similar to an alert system.
Emotions not only increase our general awareness and help us adapt to changes in an unpredictable environment, but they also
===> facilitate social communication and interaction. <===
That’s because we read the emotions of others through their facial expressions, bodily postures, gestures and tone of voice.