(Time HealthLand) The Science of Smooching: Why Men and Women Kiss Differently
Pointing to research by evolutionary psychologist Gordon Gallup of the University of Albany, Kirshenbaum writes on the University of Texas website:
Fifty-nine percent of men and 66 percent of women say they have ended a budding relationship because of a bad kiss. It turns out that our sense of smell may be partially responsible as we pick up subconscious clues about the other person’s DNA or reproductive status. Biologist Claus Wedekind found that women are most attracted to the scent of men who have a very different genetic code immune system than their own in a region known as the major histocompatibility complex. This may be because potential children would have a higher level of genetic diversity, making them healthier and more likely to survive.
Men also use kissing to weed out unsuitable mates — or, more often, to make themselves attractive to desirable ones. “Males tend to kiss as a means of gaining sexual favors, or as a means of affecting reconciliation,” says Gallup. “Females kiss more as a mate-assessment device.”