In the study, approximately 100 men, between the ages of 17 to 34, were asked to rate the attractiveness of images of a woman’s silhouette as she stood sideways. Each image had been altered so the lower spine curved out at different angles—causing the woman’s butt to protrude in varying extremes. What researchers found: Overwhelmingly, men preferred the uber-bendy images that showed the lower spine curved at a 45-degree angle, from back to buttocks.
Pretty interesting, but do things change when butt size comes into play? To find out, the researchers asked 200 men to look at images of women with different butt sizes and spinal curves. Turns out, the men were turned on by women whose spinal curvature was closest to 45 degrees, regardless of the size of their rear. “This enabled us to conclusively show that men prefer women who exhibit specific angles of spinal curvature over buttock mass,” said the study’s co-author Eric Russell.
The (bottom) bottom line: The right curve made it easier for women to not only carry babies, but to get off their bottoms and hunt down grub to feed the offspring their men wanted—a desire that apparently has been passed down to big galoots today.
Observed David Buss, a University of Texas psychology professor and co-author of the study, “This adds to a growing body of evidence that beauty is not entirely arbitrary, or ‘in the eyes of the beholder’ as many in mainstream social science believed, but rather has a coherent adaptive logic.” Which is basically a diplomatic way of saying, “chauvinism that dates all the way back to Neanderthal times.”
Big butts, small butts, whatever. When do we get to weigh in with some scientific methodology of our own?
Line ’em up, boys…