Take one look at a mechanic's hands, and you could probably guess their profession.
But there are more secrets to those limbs than just how dirty or beat up they are — new studies have shown that your fingers, particularly the sizes your index and ring fingers are relative to each other, can actually say a lot about who you are as a person. In a Men's Fitness article, five different conclusions are explored that can be drawn from what we know.
As it turns out, the larger the difference between your ring and index finger — assuming your index finger is shorter — the more testosterone you absorbed in the fetus.
1. They might indicate how well you treat women.
In a study from McGill, the smaller the ratio between the index and ring finger (or the longer the ring finger was compared to the index finger), the more likely the man was to be friendly towards a woman.
"When with women, men with smaller ratios were more likely to listen attentively, smile and laugh, compromise or compliment the other person," Debbie Moskowitz, lead author and professor of psychology at McGill, said.
It wasn't just in romantic partnerships; the men showed that kind of attentiveness with their colleagues and friends, as well. The study looked at 155 participants over the course of 20 weeks.
2. Whether you're interested in one woman or many.
An Oxford study indicated that the ration between your index and ring finger could also clue people in to your monogamous desires. 585 American and British volunteers completed a questionnaire that indicated men (and women) with smaller "2D:4D" ratio — as it's becoming known — the higher the chance of promiscuity. The study explored two kinds of people: "stay" or "stray."
3. How well you did on the SATs.
Mark Brosnan of the University of Bath understands that testosterone exposure in the womb has a lot to do with how the parts of the brain develop that deal with math and spacial recognition. So it may not be a big surprise that high testosterone exposure, which indicates the small ratio and large difference between your index and ring finger, has been related to success on the math section of the SATs.
"Finger ratio provides us with an interesting insight into our innate abilities in key cognitive areas," Brosnan said.
4. How attractive you are.
The longer your ring finger is compared to your index finger, the better your chances of being a "good looking" man. That's according to University of Geneva, recently published in the journal Proceedings of the Royal Society B. In it, 49 men had their digit ratios photographed before showing pictures of their faces to a group of 18 to 33 year old women. What they found was that there was a high correlation of the women's attractiveness to the men with the smallest ratio.
5. And, finally, your chances of developing prostate cancer.
While all men should constantly monitor themselves for signs of prostate cancer, there is one big piece of troubling news for those with the low 2D:4D ratio: a higher risk of prostate cancer.
A 2010 study published in the British Journal of Cancer examined 1,500 prostate cancer patients and 3,000 men who had a clean bill of health over a span of 15 years. As it turned out, men who had index fingers similar in length or longer than their ring fingers were 33 percent less likely to be diagnosed with prostate cancer.
How does this article prove out in your life? Let us know in the comments!
Cover image via Michael Loccisano/Getty Images.
(H/T: Men's Fitness)