What are emotions?

An emotion is a complex pyschological state that involves three distinct components: a subjective experience, a physiological response, and a behavioral or expressive response.

In addition to trying to define what emotions are, researchers have also tried to identify and classify the different types of emotions. The descriptions and insights have changed over time

Plutchik proposed eight primary emotional dimensions: happiness vs. sadness, anger vs. fear, trust vs. disgust, and surprise vs. anticipation. These emotions can then be combined to create others (such as happiness + anticipation = excitement).