According to an article published by Dailymail, scientists have now proffered reasons why men prefer women with massive bums. Modern man’s preferences for women with a curvy backside has been traced back to prehistoric influences.
It found the ‘theoretically optimal angle of lumbar curvature,’ is a 45.5 degree curve from back to buttocks.
This allowed ancestral women to better support, provide for, and carry out multiple pregnancies.
‘What’s fascinating about this research is that it is yet another scientific illustration of a close fit between a s*x-differentiated feature of human morphology — in this case lumbar curvature — and an evolved standard of attractiveness,’ said the study’s co-author David Buss, a University of Texas at Austin psychology professor.
‘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.’
The research was published online in Evolution and Human Behavior, and consisted of two studies. The first looked at vertebral wedging, an underlying spinal feature that can influence the actual curve in women’s lower backs. About 100 men rated the attractiveness of several manipulated images displaying spinal curves ranging across the natural spectrum.
Men were most attracted to images of women exhibiting the hypothesized optimum of 45 degrees of lumbar curvature.
‘This spinal structure would have enabled pregnant women to balance their weight over the hips,’Lewis said.
‘These women would have been more effective at foraging during pregnancy and less likely to suffer spinal injuries.
‘In turn, men who preferred these women would have had mates who were better able to provide for fetus and offspring, and who would have been able to carry out multiple pregnancies without injury.’
The second study addressed the question of whether men prefer this angle because it reflects larger buttocks, or whether it really can be attributed to the angle in the spine itself.
Approximately 200 men were presented with groups of images of women with differing bu ttock size and vertebral wedging, but maintaining a 45.5-degree curve.
Men consistently preferred women whose spinal curvature was closer to optimum regardless of bu ttock size, the researchers found.
‘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, a visiting researcher from UT Arlington.
This morphology and men’s psychological preference toward it have evolved over thousands of years, and they won’t disappear over night.
‘This tight fit between evolutionary pressures and modern humans’ psychology, including our standards of attractiveness, highlights the usefulness that an evolutionary approach can have for expanding our knowledge not just of the natural sciences, but also the social sciences,’ Lewis said.
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