Flashback Friday: What can 2,914 Australian twins tell us about the evolution of the female orgasm?

When it comes to the evolution of human traits, there’s no issue quite as hot as the “purpose” of the female orgasm. Is it under evolutionary selection, or is it just a developmental byproduct of the all-important male orgasm? Well, according to these authors, if the female orgasm has been selected for, one would expect rates of orgasm to correlate with behaviors related to “fitness”– which in this context doesn’t mean how much you can bench press, but rather how likely it is that your line

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