Oxytocin is also released at childbirth and signals the release of breast milk. The experience of pleasure converges with the experience of attachment. The experience of positive emotion during social interactions is the glue that bonds human beings. One could undoubtedly argue that shared joy is more bonding than shared tragedy. It is also interesting to contrast the link between positive emotions and social behavior with that of negative emotions and social behavior.
Individuals feel good when they are interacting with others.
This relation between positive emotions and social interactions is unique to the positive, having little impact on negative emotional states. I would suggest that the spiral is fueled by the adaptive force of close interpersonal ties and that these relationships may serve as reservoirs of positive experience. Much has been made of the differentiation of negative emotions relative to positive emotions. Negative emotions are varied, and there are a variety of ways to discuss the nuances of misery. When people describe their negative emotions to others, they distinguish themselves by the highly specific labels that exist in the emotional lexicon.