Meaning Of Fingers

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A new study by Korean researchers found that the length of men's fingers indicates the length of their penises. The study found that the longer a man's right-hand ring finger is than his right-hand index finger, the longer his penis. To test their hypothesis, the researchers stretched men's flaccid penises as much as possible before measuring them because "stretched [flaccid] penile length provides a reliable estimate of the potential maximal elongation during erection," the researchers wrote. "Therefore, the technique applied here for stretched penile length measurement is highly recommended for accurate prediction of erect penile length. Penile length was measured under anaesthesia, avoiding pain or discomfort when the penis was fully stretched." Thinkstock 

The difference in length between the right-hand ring finger and the index finger -- a comparison scientists call the "digit ratio" or "2D:4D," for "second digit" (index finger) and "fourth digit" (ring finger) -- is studied avidly because it correlates directly with many physical, behavioral, psychological, and sexual aspects of human life.

Males typically have longer right-hand ring fingers than right-hand index fingers. (Paradoxically, this larger difference in length is called a "low digit ratio.") Females' right-hand ring and index fingers are typically the same length. (This is called a "high digit ratio.") The farther apart the fingers are in length, the lower the ratio; the closer in length, the higher the ratio. Digit ratios are largely determined by male and female hormones, to which fetuses are exposed in utero.

Meaning Of Fingers

Entertainment Preferences 

Individuals with longer ring fingers -- that is, low 2D:4D -- prefer action films, hip-hop, erotic footage, and video games involving killing over other types of entertainment. This recent study, also out of Korea, also found that low 2D:4D folks -- that is, mainly men -- really dislike romance films. (High 2D:4D folks like them.) "In addition, we found that low 2D:4D was associated with a preference for sports instead of other genres of entertainment products," the researchers wrote. "Therefore, 2D:4D helps us to better understand the rationale of individuals’ preferences for media violence."

Sexual Orientation  

Males with very low 2D:4D have a higher likelihood than other men of being gay, according to a study by University of Liverpool researchers.  "There was a significant positive relationship between mean 2D:4D ratio and exclusive homosexuality," the researchers wrote. Another study by the University of California, Berkeley, confirmed these connections, adding that the likelihood is even higher among men with elder brothers. The Berkeley researchers also noted that lesbians tend to have low -- that is, typically male -- digit ratios.

Depression

Males with high-digit ratios -- that is, typically "feminized" ratios with index and ring fingers of the same length -- are more likely to be depressed than men with low-digit ratios. The University of Alberta study found high rates of clinical depression in men with those digit ratios. "The risk and prevalence of major depression is about twice as high for females compared to males," the researchers wrote. "Not only do women report depression more often, but they also report more symptoms per depressive episode, and are more susceptible to stressors than men. If this is the case, higher, more feminine digit ratios should correlate with higher scores for depression within each sex." And they do. 

Sports Skills 

People with low-digit ratios -- that is, longer ring fingers -- are good at sports. A subsequent University of Liverpool study found lower-than-average digit ratios among professional football players and concluded that low-digit-ratio guys are athletic, aggressive and especially skilled at navigating space, which is a key skill in sports. A study that focused on the finger lengths of skiers found that the lower the digit ratio, the faster the skier.

Math Skills  

People with low-digit ratios are better at math than people with high-digit ratios. According to a study published in the British Journal of Psychology, people with high-digit ratios tested better in literacy while low 2D:4D folks tested better at math.

Personality 

People with low-digit ratios -- that is, longer ring fingers -- are more likely to be cooperative than egoistic or altruistic. This finding surprised the University of Leuven researchers who conducted the study that yielded it. Because low 2D:4D is associated with aggression, competitiveness, status-seeking, and dominance-seeking, the researchers expected to find that in situations involving finance low 2D:4D folks would grab status and dominance by acting either egoistically (that is, selfishly, by refusing to pay their fair share) or altruistically (that is, paying more than their fair share as a demonstration of power), rather than playing fair. "We found the exact opposite," the researchers wrote.