“…Modern views define emotion in such a way that each individual emotion has evolved through evolutionary history by some kind of natural selection, i.e., by expanding the repertoire of behavior that leads to coordinated cognitive, physiological, and behavioral responses that increase the likelihood of survival and reproduction. Negative emotions (of fear, anxiety, pain, sadness, jealousy, grief, anger, guilt, shame) are mainly associated with increased likelihood of survival, while positive emotions are mostly associated with increased reproductive success and care for offspring (excitement, joy, pleasure, desire, hope, infatuation, pride, optimism, friendship, love) [ 235 , 236 ].…”