Your hands can say a lot about you—your grooming habits (or lack thereof), your occupation, even your hobbies—but your fingers can say more.
Take a look. Is your index finger shorter than your ring finger? This specific digit ratio—known as 2D:4D (defined as the second digit length divided by the fourth digit length, or your ring finger length divided by your index finger length)—indicates the amount of testosterone you were exposed to as a fetus.
The smaller your 2D:4D ratio—the longer your ring finger is compared to your index—is, the more testosterone you absorbed in the womb compared to men with large ratios. And hormones like testosterone, it turns out, have a peculiar affect on how you behave toward women, a McGill study published in the journal Personality and Individual Differences and a University of Oxford study have found.
Here are 5 traits your fingers reveal about your personality.
If your ring finger is longer than your index finger, you’re predisposed to promiscuity; if not, you’re hard-wired for monogamy, Oxford University researchers say. They compared findings from a questionnaire on sexual habits, completed by 585 American and British volunteers, with their “2D:4D” ratio (again, that’s the ratio between the lengths of their index and ring fingers). They found 53 percent of women and 43 percent of men are more inclined to be faithful, while 57 percent of men and 47 percent of women are more inclined to cheat, phys.org reports.
In the McGill study, 155 participants filled out forms for every social interaction they had lasting five minutes or more, then checked off a list of behaviors (either agreeable or quarrelsome) they engaged in over the span of 20 days. Researchers found that men with short index fingers and long ring fingers are, on average, nicer towards women.
Men with small digit ratios logged about a third more agreeable behaviors and approximately a third fewer quarrelsome behaviors than men with large digit ratios. And this wasn’t just with women they were sexuallly involved with; they were nicer toward female friends and colleagues, too.
Desire To Have More Kids
Men with smaller digit ratios are also incliend to have more children, the McGill researchers found.
“Our research suggests they have more harmonious relationships with women; these behaviors support the formation and maintenance of relationships with women,” says Debbie Moskowitz, lead author and Professor of Psychology at McGill. “This might explain why they have more children on average.”
Willingness to Compromise
Because men with small digit ratios reported approximately a third more agreeable behaviors and a third fewer quarrelsome behaviors than men with large digit ratios, researchers suspect they’re also more willing to compromise.
“When with women, men with smaller ratios were more likely to listen attentively, smile and laugh, or compliment the other person,” says Moskowitz.