Maturity is hot
Anthropologist Martin Muller and his colleagues at Boston University have released a fascinating study showing that the bias toward younger women is a strictly human condition. In the chimpanzee world, not only are older females not discarded, they’re the most desireable mating partners.
From Reuters:
They were checking to see if chimpanzees behave like humans, their closest living relatives, who form long-term mating bonds and who value younger females.
This is most definitely not the case with chimps. The very oldest adult females were the most sought-after.
“The males fight over them more,” Muller said.
“They don’t have to do anything to get the males interested. The males find them. They follow them around. If you look at the very youngest females, the males will mate with them but it does take more work on the female’s part.”
I like this image. Sounds like chimps recognize a good thing, the same as a discerning human man does. Since chimps don’t pair bond, shared years and offspring don’t build a relationship that must be honored even into unattractive age. They’re going after the mature females because they want them.
“Chimpanzee males may not find the wrinkled skin, ragged ears, irregular bald patches, and elongated nipples of their aged females as alluring as human men find the full lips and smooth complexions of young women, but they are clearly not reacting negatively to such cues,” the researchers concluded.
Umm … “Not reacting negatively” to physical signs of aging would make sense, were the playing field to be level between young and older female chimps, but the rest of the study contradicts that notion. The conclusion is that older females are strongly prefered, not just tolerated. If not from appearance, how else would chimps know which females are the oldest? Sounds like a definite attraction to me. Maybe a human age bias going on here?
It’s nice to know that somewhere in our evolutionary past that years = value. Maybe we’ll return to that notion someday. For a neat comparision, I refer you to Lisa’s post on Girls vs. Women.

