Women are predisposed by their genetics to have affairs as "back-up plans'" if their relationships fail, according to a research paper.
Scientists at the University of Texas say they are challenging the assumption that humans have evolved to have monogamous relationships.
The team's research has put forward the "mate-switching-hypothesis" which says humans have evolved to keep testing their relationships and looking for better long-term options.
The senior author of the research, Dr David Buss, told the Sunday Times: "Lifelong monogamy does not characterise the primary mating patterns of humans.
"Breaking up with one partner and mating with another may more accurately characterise the common, perhaps the primary, mating strategy of humans."
For our distant ancestors – when disease, poor diet and minimal healthcare meant that few people lived past 30 - looking for a more suitable partner was necessary, researchers assert.
Despite anecdotal claims about cheatng, no study has shown that humans are predisposed to monogamy or non-monogamy.
A study carried out by Rafael Wlodarski and a team of researchers at Oxford University looking into infidelity found a correlation between the length of a individual's ring finger and the likelihood that they would cheat on a partner.
However, they stressed that they could not find a causal link.
Professor Robin Dunbar of Oxford University said the differences were “subtle” and “only visible when we look at large groups of people”.
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Mariah Carey is, as usual, hiding in the open. Maneuvering through the main dining room at Nobu Malibu with a small entourage, she’s wearing large sunglasses and a leather jacket draped over her shoulders.
Trailed by flashing camera bulbs and the dinner crowd’s murmurs, she sits with me at a barely-lit table on the restaurant’s outside deck, overlooking the Pacific Ocean.
It’s a cool summer night, but the heat lamps radiate enough warmth that she discards the jacket, revealing, well, a lot—just not much in the way of clothes.
There is a concise black skirt, an overwhelmed bra, and a wisp of a black top. Mostly, though, her look is all boobs and legs.
“I didn’t want to walk over without my jacket on,” she explains. “This ensemble’s a little see-through!”
Carey has made a career of divulging what she wants when she wants to—which isn’t often. After decades in the tabloid spotlight, she’s successfully walled off most of her life from the public.
She’s notorious for canceling photo shoots and turning down interviews. A colossal financial success and a diva par excellence, Carey has riches that mere mortals simply can’t relate to—and an origin story to match. “I don’t have a birthday,” she jokes when asked about turning 46 in March. “I was just dropped here. It was a fairyland experience.”
So in many ways, Carey’s upcoming E! show, Mariah’s World, an eight-part docuseries slated for the fall, is a surprise.
It promises the requisite look inside the celebrity bubble, including rehearsals for her European tour, the planning of her wedding to billionaire James Packer later this year, and her unrelenting campaign against unflattering fluorescent lighting. But it won’t be, according to Carey, a put-it-all-out-there show in the style of the Kardashian clan—who are, coincidentally, filming something in a private dining room 15 yards away.
“Some of us,” Carey says, casting a glance toward the room, “talk about other people and what they do and la la la. But I’m not that person.”
Still, Carey’s combination of glamour, curves, and shade, expertly delivered, should make Mariah’s World perfect reality TV. And that’s what some people are afraid of. Tabloids have quoted “insiders” worried that a reality show will prove embarrassing for her.