Not all negative emotions are equal - Sadness and anger develop differently and their adaptivity is age-graded

We argue that a comprehensive understanding of emotional development across adulthood must go beyond broad dimensions of affect and consider discrete emotions. Current evidence focuses on sadness and anger, two negative emotions that exert contrasting age trajectories because anger has high adaptive value in young adulthood, when people have abundant resources and need to carve out a niche in society, whereas sadness has high adaptive value in old age, a time declining resources that requires adaptation to increasingly unattainable goals. We conclude that our position about the age-graded experience and adaptive value of emotions should hold for a variety of negative and positive emotions.