Word: personent
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...mating and the rituals surrounding it make us come unhinged in other ways too, ones that are harder to explain by the mere babymaking imperative. There's the transcendent sense of tenderness you feel toward a person who sparks your interest. There's the sublime feeling of relief and reward when that interest is returned. There are the flowers you buy and the poetry you write and the impulsive trip you make to the other side of the world just so you can spend 48 hours in the presence of a lover who's far away. That's an awful...
Human beings make a terrible fuss about a lot of things but none more than romance. Eating and drinking are just as important for keeping the species going--more so actually, since a celibate person can at least continue living but a starving person can't. Yet while we may build whole institutions around the simple ritual of eating, it never turns us flat-out nuts. Romance does...
...only tells males which females are primed to conceive, but it also lets both sexes narrow their choices of potential partners. Among the constellation of genes that control the immune system are those known as the major histocompatibility complex (MHC), which influence tissue rejection. Conceive a child with a person whose MHC is too similar to your own, and the risk increases that the womb will expel the fetus. Find a partner with sufficiently different MHC, and you're likelier to carry a baby to term...
...such efficient reproductive machines--equipped with both a generous appetite for mates and a cool ability to screen them for genetic qualities--why muddy things up with romance? For one thing, we may not be able to help it. Just being attracted to someone doesn't mean that that person is attracted back, and few things drive us crazier than wanting something we may not get. Cultural customs that warn against sex on the first date may have emerged for such practical reasons as avoiding pregnancy or sexually transmitted diseases, but they're also there for tactical reasons. Males...
...elaborate ritual of dating is how this screening takes place. It's when that process pays off--when you finally feel you've found the right person--that the true-love thrill hits, and studies of the brain with functional magnetic resonance imagers (fMRIs) show why it feels so good. The earliest fMRIs of brains in love were taken in 2000, and they revealed that the sensation of romance is processed in three areas. The first is the ventral tegmental, a clump of tissue in the brain's lower regions, which is the body's central refinery for dopamine. Dopamine...