Penis size does matter to women, researchers say in PNAS study (w/ Video)

April 8, 2013 by Kerry Sheridan
The eternal question of whether penis size matters to women has been probed by a team of international scientists who reported on Monday that yes, ladies do find larger men more attractive.

The eternal question of whether penis size matters to women has been probed by a team of international scientists who reported on Monday that yes, ladies do find larger men more attractive.

What's more, prehistoric who could see the of their scantily clad male counterparts may have helped influence the evolution of larger genitals in men by choosing to mate with partners who were bigger.

Researchers said they decided to tackle the topic because past studies had offered conflicting answers, and may have been sullied by asking the women too directly.

"Since penis size is a sensitive subject, it's hard to determine whether females lied or 'self-deceived' in their responses," lead author Brian Mautz, a in evolution and at the University of Ottawa, told AFP via email.

So they embarked on a new type of study, using computer-generated images of generic male figures with varying heights, body shapes and flaccid penis lengths.

A sample of 105 Australian women were asked to view 53 of these life-sized robot-like pictures, which rotated so they were visible at different angles.

The women—all heterosexual—were not told they were participating in a study about penis size. They were simply asked to rate the figures according to . Their answers were collected anonymously.

Researchers found that women rated tall men with long penises as the most attractive.

The women also tended to gaze longer at the larger men. But not too long—each rating was made in about three seconds.

But how big is best? On that question, researchers were, er, stumped.

"We didn't find an ideal (i.e. 'most attractive') penis size or height," Mautz explained.

"The attractiveness scores were still increasing at the largest values for these traits."

The findings were published in a peer-reviewed scientific journal in the United States, called the Proceedings of the National Academy of Sciences (PNAS).

The results "directly contradict claims that penis size is unimportant to most females," and also hint at why human males tend to have relatively larger genitalia when compared to other primates, the study said.

"Our results show that female mate choice could have played a role in the evolution of the relatively large human male penis," the authors wrote.

"Before clothing, the nonretractable human penis would have been conspicuous to potential mates."

The study did not get into the racial background of men and whether that may affect penis size, but it did document the ethnicity and age of the women it was studying for hints about whether penis size mattered.

More than 70 percent of the women were of European origin, 20 percent were Asian and seven percent were from elsewhere. Their average age was 26.

Explore further: Male circumcision lowers prevalence of penile precancerous lesions among African men

More information: "Penis size interacts with body shape and height to influence male attractiveness," by Brian S. Mautz, et al. PNAS, 2013.

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20 comments

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Moebius
2.3 / 5 (9) Apr 08, 2013
LOL I've told women before having sex that I was small and they all got a little solemn and said it didn't matter. Then when they found out the truth we had a good laugh, they all said they were lying.
grondilu
3 / 5 (4) Apr 08, 2013
Duh. Of course it does. When a woman says it does not matter, she is just being polite.
PoppaJ
2.5 / 5 (8) Apr 08, 2013
Interesting the it took this long for the obvious to become accepted. Humans have such a hard time with reality.
Whydening Gyre
2.7 / 5 (12) Apr 08, 2013
While it appears women may prefer larger penises, I find it tellingly funny that men (heterosexual ones, anyway) seem to lack that particular bias when it comes to vaginas. Who's the superficial one NOW, ladies?
thomas_turk_16
3 / 5 (2) Apr 08, 2013
Korean men have only 3-4", African men up to 10". Vaginas of the different races are designed to accept the respective sizes. So too big is not good for a small lady. Too small? Not really. The lady's g spot is just behind the pubic bone, so even a little man inside a big lady is effective. In any case, women's sexual response. from level 1-10, is more important to men, (to me anyway). A level 1 does not get off the threshold and feels nothing. a 3 has a single orgasm, a 10 will orgasm on every stroke. So whether the lady is a 1 or a 10, concerns us, (me)than the size of out chipolata/salami.
Phil DePayne
1 / 5 (7) Apr 08, 2013
As a piano player I would like to note the relationship between hand size and penis length, which I theorize may be exposure to high testosterone levels in the womb. A study needs to be done to confirm this. As for this article, I agree with Moebius - it is easy to giggle with your partner about this issue, if you have no shortcomings (pardon the pun).
Egleton
2.3 / 5 (6) Apr 09, 2013
Damn.
Skepticus
1.3 / 5 (6) Apr 09, 2013
("yesterday" song lyric):..Suddenly...you are half the size you judged to be..!
guiding_light
5 / 5 (2) Apr 09, 2013
How did body shape turn out, I wonder? No mention of muscularity, ectomorphic/endomorphic. Isn't higher rating for larger features common sense, even if culturally driven? If men had to evaluate female figures, wouldn't a similar correlation to bust size be the result?
nowhere
3.5 / 5 (4) Apr 09, 2013
While it appears women may prefer larger penises, I find it tellingly funny that men (heterosexual ones, anyway) seem to lack that particular bias when it comes to vaginas. Who's the superficial one NOW, ladies?


Me. I like big boobs.
jibbles
2 / 5 (1) Apr 09, 2013
why did it take this long to realize this? is it because men with small penises rule the world -- to compensate?
Moebius
1 / 5 (6) Apr 09, 2013
I've had sex with almost every race of women except black, around 100, including about 30 Korean women. Except for one Italian girl, they all have vagina's about 8 inches deep. Also, the distance from a toilet seat to the water in almost every toilet is about 7.5". Guess how I know those 2 facts? And if anyone claims to be big and they don't know those 2 facts, they are lying.
grondilu
5 / 5 (2) Apr 09, 2013
Remove this comment please.
Whydening Gyre
1.3 / 5 (7) Apr 09, 2013
How did body shape turn out, I wonder? No mention of muscularity, ectomorphic/endomorphic. Isn't higher rating for larger features common sense, even if culturally driven? If men had to evaluate female figures, wouldn't a similar correlation to bust size be the result?


Boobs are nice, don't get me wrong. But hips, thighs and buttocks "closer to where the action is..."
Whydening Gyre
1.9 / 5 (9) Apr 09, 2013
Met a girl, once, who said gimme 12 inches and make me bleed..
I boffed her twice and punched her in the nose...

jibbles
5 / 5 (3) Apr 10, 2013
"PNAS study" lol!
deisik
5 / 5 (2) Apr 10, 2013
Double lol. Size matters? Yeah, really! Size of your purse
Moebius
1 / 5 (5) Apr 11, 2013
I've had sex with almost every race of women except black, around 100, including about 30 Korean women. Except for one Italian girl, they all have vagina's about 8 inches deep. Also, the distance from a toilet seat to the water in almost every toilet is about 7.5". Guess how I know those 2 facts? And if anyone claims to be big and they don't know those 2 facts, they are lying.


I figure the 2 people who voted this post a one must have self esteem problems, well deserved probably if this article is true. I expected the little guys to reveal themselves with at least one of my posts on this article.
PCB
5 / 5 (1) Apr 13, 2013
Here is the actual Abstract:
http://www.pnas.o...19361110
And here is the article the respected Nature Magazine:
http://www.nature...-1.12770
ODesign
2 / 5 (3) Apr 15, 2013
This seems to explain only the preferences in watching images on a tv. Perhaps a similar study would find that the size of a rinocerous horn or number of bullets a gun can fire in a tv show matter to women.

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