Digit ratio predicts penis length

In addition to its relationship to a variety of diseases, the length ratio of the second and fourth fingers also correlates with stretched penile length in men.

By | July 5, 2011

FLICKR, JON GENIUS

You know the old wives tale about the size of a man's feet? Well, science has uncovered evidence that his hands may hold a similar predictive power. According to a study published online yesterday (July 4) in the Asian Journal of Andrology, the length of a man’s fingers is indicative of his stretched penile length—the shorter the second finger is relative to the fourth, the longer the penis. The 2D:4D ratio of the male hand has previously been linked to a variety of biological characteristics, including general attractiveness and the risk of developing certain diseases such as prostate cancer. These correlations are likely due to differences in prenatal testosterone levels and the sensitivity of the androgen receptor, both key factors in penis development. The authors propose that higher prenatal androgen causes both the lower digit ratio and the longer penile length.

The finding adds to a growing body of literature that suggests that digit ratio may serve as a valuable biomarker for clinical conditions related to the effects of androgens during development, Denise Brooks McQuade of Skidmore College in Saratoga Springs, NY, wrote in an accompanying commentary.

Advertisement
The Scientist
The Scientist

Add a Comment

Avatar of: You

You

Processing...
Processing...

Sign In with your LabX Media Group Passport to leave a comment

Not a member? Register Now!

LabX Media Group Passport Logo

Comments

Avatar of: crl

Anonymous

July 5, 2011

This article invites some crazy responses, so here goes.

We males have become used to being mentally psychoanalysed by some of the people we meet, but does this report mean that trivia magazines will be able to conclude that a glance at our hands is enough to deduce our innermost secrets or even our marriage prospects?

Will it become illegal (or, depending where you live, obligatory) to wear gloves or other means of concealing ones's fingers?

Avatar of: Paul Stein

Anonymous

July 5, 2011

The correlation coefficients are so low as to be laughable.  By giving this article any "press", I'm afraid that it will now end up on Yahoo or MSN as something real and significant.

Avatar of:

Posts: 0

July 5, 2011

This article invites some crazy responses, so here goes.

We males have become used to being mentally psychoanalysed by some of the people we meet, but does this report mean that trivia magazines will be able to conclude that a glance at our hands is enough to deduce our innermost secrets or even our marriage prospects?

Will it become illegal (or, depending where you live, obligatory) to wear gloves or other means of concealing ones's fingers?

Avatar of:

Posts: 0

July 5, 2011

The correlation coefficients are so low as to be laughable.  By giving this article any "press", I'm afraid that it will now end up on Yahoo or MSN as something real and significant.

Avatar of:

Posts: 0

July 5, 2011

This article invites some crazy responses, so here goes.

We males have become used to being mentally psychoanalysed by some of the people we meet, but does this report mean that trivia magazines will be able to conclude that a glance at our hands is enough to deduce our innermost secrets or even our marriage prospects?

Will it become illegal (or, depending where you live, obligatory) to wear gloves or other means of concealing ones's fingers?

Avatar of:

Posts: 0

July 5, 2011

The correlation coefficients are so low as to be laughable.  By giving this article any "press", I'm afraid that it will now end up on Yahoo or MSN as something real and significant.

Avatar of: jerry d

jerry d

Posts: 1457

July 6, 2011

Interesting, too, how the hands in the picture appear to belong to a black male.

Avatar of:

Posts: 0

July 6, 2011

Interesting, too, how the hands in the picture appear to belong to a black male.

Avatar of:

Posts: 0

July 6, 2011

Interesting, too, how the hands in the picture appear to belong to a black male.

Avatar of:

Posts: 0

July 8, 2011

After I told my wife the results, she said, "Well, that's a stretch; no pun intended."

Avatar of:

Posts: 0

July 8, 2011

Do you think that Match.com or eHarmony are going to ask for the men's 2D:4D ratios from now on?

Avatar of:

Posts: 0

July 8, 2011

After I told my wife the results, she said, "Well, that's a stretch; no pun intended."

Avatar of:

Posts: 0

July 8, 2011

Do you think that Match.com or eHarmony are going to ask for the men's 2D:4D ratios from now on?

Avatar of: Paul Stein

Anonymous

July 8, 2011

After I told my wife the results, she said, "Well, that's a stretch; no pun intended."

Avatar of: Paul Stein

Anonymous

July 8, 2011

Do you think that Match.com or eHarmony are going to ask for the men's 2D:4D ratios from now on?

Avatar of: Response

Anonymous

July 22, 2011

so if i get finger augmentation surgery...

Avatar of:

Posts: 0

July 22, 2011

so if i get finger augmentation surgery...

Avatar of:

Posts: 0

July 22, 2011

so if i get finger augmentation surgery...

Avatar of:

Posts: 0

July 30, 2011

Agreed Paul.  The correlations were .2-ish, so the proportion of the penis length the digit ratio accounts for is 4% (.2 squared=.04). So if the total range of penis length difference is 10 cm, knowing someones digit ratio would allow you to predict about 4 millimeters of that 100 millimeter difference in length. Not that useful in practical terms.

Avatar of:

Posts: 0

July 30, 2011

Agreed Paul.  The correlations were .2-ish, so the proportion of the penis length the digit ratio accounts for is 4% (.2 squared=.04). So if the total range of penis length difference is 10 cm, knowing someones digit ratio would allow you to predict about 4 millimeters of that 100 millimeter difference in length. Not that useful in practical terms.

Avatar of: DougT

Anonymous

July 30, 2011

Agreed Paul.  The correlations were .2-ish, so the proportion of the penis length the digit ratio accounts for is 4% (.2 squared=.04). So if the total range of penis length difference is 10 cm, knowing someones digit ratio would allow you to predict about 4 millimeters of that 100 millimeter difference in length. Not that useful in practical terms.

Avatar of:

Posts: 0

September 24, 2011

it's not the only study on this subject.....

Avatar of: Anouk

Anonymous

September 24, 2011

it's not the only study on this subject.....

Avatar of:

Posts: 0

September 24, 2011

it's not the only study on this subject.....

Follow The Scientist

icon-facebook icon-linkedin icon-twitter icon-vimeo icon-youtube
Advertisement

Stay Connected with The Scientist

  • icon-facebook The Scientist Magazine
  • icon-facebook The Scientist Careers
  • icon-facebook Neuroscience Research Techniques
  • icon-facebook Genetic Research Techniques
  • icon-facebook Cell Culture Techniques
  • icon-facebook Microbiology and Immunology
  • icon-facebook Cancer Research and Technology
  • icon-facebook Stem Cell and Regenerative Science
Advertisement
Advertisement
Life Technologies