In this controversial show, an expert panel of scientists, psychologists and relationship experts matched total strangers and sent them down the aisle, where they met for the first time and, promptly, married. The couples were so compatible that they’d immediately form a lifelong bond.
While this sentiment rarely plays out on the show – most couples split up during or soon-after their wedding – this romantic fancy exists for one small mammal: the prairie vole.
Scientists believe certain “attractive” traits were shaped through sexual selection.
A big brow and chiselled jawline flash high testosterone to women, while full lips and a smaller jaw signals high fertility to men.
But attraction is not that simple – studies have shown women to be drawn to faces with lower levels of “masculinity” over less fertile periods of the reproductive cycle, for example.
And the dating game has changed over the last five years, Kasumovic says.
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During and after having sex, prairie voles get hormonally addicted to their partner, leading to a stable co-parenting arrangement. Because oxytocin and vasopressin also play a role in human love and attachment, scientists have been interested in prairie vole relationships, and have conducted experiments to test the role of these hormones in monogamy.