What Penis Size Do Women Prefer?

What Penis Size Do Women Prefer?
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Good news, normally-endowed men of the world! When it comes to penis size, bigger isn't always better! But it doesn't hurt to be slightly above average...

In what may be the most titillating use of 3D printing to date, researchers primarily based out of the University of California Los Angeles manufactured 33 phallic objects of various sizes (pictured above) and asked a diverse group of 75 women attracted to men (average age 25) to analyze the collection and select which would be their preferred penis size for sexual intercourse. The results were published last week to PLoS ONE.

According to the researchers:

"Women preferred a penis of slightly larger circumference and length for one-time (length = 6.4 inches/16.3 cm, circumference = 5.0 inches/12.7 cm) versus long-term (length = 6.3 inches/16.0 cm, circumference = 4.8 inches/12.2 cm) sexual partners."

Those values are slightly larger than the average American penis size: roughly 5.6 inches in length and 4.8 inches in circumference when fully erect.

The researchers noted that women might not prefer even larger penises because of their potential to tear or damage the sensitive structures inside the vagina.

"Anything that increases friction during intercourse may promote genital injury, indirectly increasing infection risk. A larger phallus would increase friction relative to a smaller phallus. These potential complications of a larger penis suggest why the human penis has not evolved to be larger," the researchers noted

Other interesting tidbits from the study: 27% of the subjects reported that they had ended a relationship partly due to a mismatch in their preferred penis size and their partner's genitalia. However, 83% of the respondents said that they were about as concerned with penis size as other women or not very concerned about it at all.

A key strength of the study was its use of three dimensional reference objects and a study design in which subjects actually answered questions in the lab. However, these methodological strengths limited the size and scope of the participant group. Subjects tended to be younger and were recruited around the UCLA campus. Who knows if their preferences will match those of women across the country?

A past study showed that around two-thirds of men agonize at some point about the size of their member, and many even attempt methods to enhance the size of their phallus. But rather than popping penis enlargement pills that don't work, men would be better off not worrying about their genitalia, being confident in who they are, and learning to use the complete repertoire of tools at their disposal for sexual pleasure.

Citation: Prause N, Park J, Leung S, Miller G (2015) Women's Preferences for Penis Size: A New Research Method Using Selection among 3D Models. PLoS ONE 10(9): e0133079. doi:10.1371/journal.pone.0133079

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