ADVERTISEMENT

Fact Finder: Digit Divide

Information bits from the news


In men the index finger is usually shorter than the ring finger, but in most women it's the other way around, although in some women the fingers are of equal length. In mice the digit ratio corresponds to the female-male hormonal balance in the womb during the week digits form; androgen apparently produces a longer ring finger.

Researchers study these ratios to see if they can serve as markers for certain human attributes. So far in 2012, studies have found that girls with a masculine ratio do not get lost as easily; that a feminine ratio in heterosexual girls is associated with bulimia; and that boys with more masculine ratios have more typically masculine facial features.

Rights & Permissions
or subscribe to access other articles from the July 2012 publication.
Digital Issue $5.99
Digital Issue + Subscription $39.99 Subscribe
Share this Article:

Comments

You must sign in or register as a ScientificAmerican.com member to submit a comment.

EVERY ISSUE
EVERY YEAR
1845-PRESENT

Get All-Access Digital + Print >

X

Email this Article

X