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"Porn addiction," like "sex addiction," isn't recognized by the DSM-5, which classifies mental disorders. While porn-viewing can be compulsive, like other behaviors, research suggests that perceived porn addiction predicted distress over actual porn use itself. Yet, the idea of "porn addiction" persists in the U.S., which lacks comprehensive sex education requirements in many states; only 37 percent of states require sex education to be medically accurate, according to Boston University.
Now, three researchers at the University of Pennsylvania, Alexander Platt, Daniel N. Harris, and Sarah Tishkoff, have done the converse analysis: examining the X chromosomes of the handful of completed Neanderthal genomes we have. It turns out there's also a strong bias toward modern human sequences there, as well, and the authors interpret that as selective mating, with Neanderthal males showing a strong preference for modern human females and their descendants.
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