The New York Times:
A couple of evolutionary psychologists recently published a book about human sexual behavior in prehistory called “Sex at Dawn.” Upon hearing of the project, one colleague, dubious that a modern scholar could hope to know anything about that period, asked them, “So what do you do, close your eyes and dream?”
Actually, it’s a little more involved. Evolutionary psychologists who study mating behavior often begin with a hypothesis about how modern humans mate: say, that men think about sex more than women do. Then they gather evidence — from studies, statistics and surveys — to support that assumption.
But in one study of speed-dating behavior, the evolutionary psychologists Eli J. Finkel and Paul W. Eastwick switched the “rotator” role. The men remained seated and the women rotated. By manipulating this component of the gender script, the researchers discovered that women became less selective — they behaved more like stereotypical men — while men were more selective and behaved more like stereotypical women. The mere act of physically approaching a potential romantic partner, they argued, engendered more favorable assessments of that person.
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