Biological models of love tend to see it as a mammalian drive, similar to appetite or thirst. Psychology sees love as more of a social and cultural occurrence. There are probably elements of fact in both views certainly love is intolerant by hormones, neurotrophins , and pheromones, and how populace think and behave in love is prejudiced by their conceptions of love. The conservative view in biology is that there are two main drives in love sexual attraction and add-on. Attachment between adults is supposed to work on the same main beliefs that lead an infant to become attached to its mother. The conventional mental view sees love as being a combination of companionate love and fervent love. Passionate love is intense longing, and is often accompany by physiological arousal. Companionate love is love and a feeling of familiarity not accompanied by physiological stimulation.
Studies have shown that brain scans of those obsessed by love display a similarity to those with a mental illness. Love creates action in the same area of the brain that hunger, thirst, and drug cravings make activity in. New love, therefore, could possibly be more physical than moving. Over time, this response to love mellows, and dissimilar areas of the brain are activated, primarily ones connecting long-term commitments. Dr. Andrew Newberg, a neuroscientist, suggests that this response to love is so similar to that of drugs since without love, humanity would die out.