For example, we may describe pain as the state of feeling unhappiness or displeasure. When we think about our emotions, we tend to think of them as related to our feelings. An example of this would be the way in which fear triggers the fight-or-flight response. He believed that each of these emotions had the ability to be the trigger of types of behavior with high survival value. He proposed that these primary emotions are biologically primitive and have evolved over time in order to increase the reproductive fitness of humans.
Plutchik suggested that there were eight basic emotions anger, fear, sadness, disgust, surprise, anticipation, trust and joy. Robert Plutchik was a psychologist who developed a psychoevolutionary theory of emotion, considered one of the most influential classification approaches for general emotional responses.
