Warmer Climate, Less Kissing
Using Jankowiak's data, anthropologist Alice Schlegel found an additional pattern: the warmer the climate, the less evidence there was of romantic kissing. In cold climates, however, even people in simpler societies showed some evidence of this act. Jankowiak thinks that, when more skin is available, there may be less reverence paid to the face and mouth because the options aren't as limited. If you're considering bundling up for some extra kisses, you may also want to throw on some red, as research has shown that women are more likely to consider kissing and dating men sporting this passionate color.