The length of your fingers determines your personality traits

The length of your fingers determines your personality traits

Some scientists believe that hands can tell a lot about personality traits, according to what was published by the British “Daily Mail”.

More specifically, scientists studied the so-called D2 to D4 ratio, which is the ratio between the index finger and the ring finger, and that ratio has been linked to many aspects such as athletic performance, obesity, and even aggression and psychopathic tendencies. However, before continuing to learn about what the features of the hands and fingers can reveal about personality traits, it should be made clear that there is a difference in destinations. While a group of scientists views the difference between the length of the fingers as somewhat arbitrary, others suggest that it could be an indicator. On how a person develops as a fetus in the womb.

testosterone

Dr. Ben Serpell, a physical education scientist from the University of New England, said that the 2D:D4 ratio is linked to the mother’s hormone levels, expressing his belief that this ratio “originates in the womb as early as the end of the first trimester, and is affected by exposure to testosterone before birth.”

“Because testosterone is an androgenic hormone, meaning it imparts what many consider ‘masculine’ traits, women typically have a higher ratio of ring and index fingers than men,” Dr. Serpell explained.

Dr. Serpell also points out that prenatal testosterone is associated with testosterone sensitivity later in life. Because this ratio is linked to the male sex hormone, researchers often focus on traits thought to be linked to testosterone sensitivity.

The ring finger is longer than the index finger

If the ring finger is much longer than the index finger, this means it is a low ratio. It is worth noting that men will always have a lower percentage than women because they are exposed to a greater amount of testosterone before birth.

And if the ratio is exceptionally low as a man or woman, there may be cause for celebration, because according to Dr. Serpell's research, it means it is a potential sign of success among surgeons and political journalists, explaining that the testosterone response is linked to the ability to receive and process information.

Higher focus and success

He says a low 2D:D4 ratio can mean “the ability to maintain focus.” Therefore, maintaining focus on a task helps success.” Other studies have also found a link between low 2D:D4 ratio and physical fitness standards among young professional soccer players.

In 2021, an international team of scientists published a paper in the journal BMC Sports Science, Medicine, and Rehabilitation, which studied 24 players under the age of 17 to measure their physical fitness and finger length. Scientists revealed that the larger the ring finger is in relation to the index finger, the better the athletes’ performance in terms of strength and physical fitness.

“Negative” traits

But a low ratio has also been linked to many “negative” traits. Results of a 2005 study of 298 students at the University of Alberta revealed that a low 2D:D4 ratio was linked to higher levels of aggression in men.

The researchers even found that men with lower percentages received more penalties during the ice hockey season. Perhaps most shocking is that a lower percentage has also been linked to antisocial personality disorder, and even psychopathic tendencies. The researchers say the findings suggest that psychopathy may be “biologically rooted.”

Less estrogen

Dr. Seyed Sepehr Hashemian, a psychoanalyst who participated in the study, said it came as a surprise that “such a linear association was observed between higher symptoms of psychiatric illness and lower 2D:D4 ratios.” “Whenever an adult participant showed signs of psychopathology, that adult appeared to have been exposed to higher concentrations of testosterone and lower concentrations of estrogen during the prenatal period.”

Meanwhile, Dr. Hashemian points out that although testosterone may predispose someone to a certain behavior, this does not mean it is “fixed destiny,” explaining that “while some traits associated with a lower D2:D4 ratio may be seen “It is negative in certain contexts, but it can also be beneficial in other contexts, such as in competitive or difficult situations.”

The index finger is longer than the ring finger

On the other hand, you may have a longer index finger than your ring finger, i.e. a high D2:D4 ratio. In addition to its association with all low-percentage traits, some studies have looked specifically at this trait.

A high D2:D4 ratio is thought to be a sign of lower testosterone and higher levels of a person's exposure to estrogen while as a fetus in the womb. Studies indicate that a higher percentage is associated with higher levels of pain in different situations.
Higher pain and fewer headaches

In one paper, conducted by researchers from the Medical University of Lodz in 2017, it was shown that among 100 men and women who underwent reconstructive rhinoplasty, a higher percentage was associated with increased pain after surgery in women.

But, on the positive side, in a 2015 study conducted by the International Headache Center in Beijing, it was found that women with higher ratios of D2:D4 were less likely to suffer from migraines.

One study, also from the University of Lodz in 2022, pointed to the role of estrogen and testosterone in shaping sex-specific fat accumulation. The researchers said that women tend to store more fat in their arms, legs and thighs than men. Based on this assumption, the researchers studied the finger proportions of 125 adults to see if this had anything to do with excess weight gain. It was proven that a higher percentage was associated with the development of obesity in both sexes.

Lack of causality and consequences

The list of traits associated with finger size includes parental poverty, right-handedness, menstrual pain, grip strength, jumping height, and even the chance of becoming a firefighter.

But Dr. Gareth Richards, a psychologist from Newcastle University, explained that the main issue is that all of these results and explanations rely on the assumption that finger length is a good indicator of prenatal hormones, stressing that “the evidence that this is in fact the case is far from possible.” About persuasion.

The fact of the matter is that some “do a large number of different measurements, and for most of them, there is no biological relationship between cause and effect,” said Professor James Smoliga, a physiologist from Tufts University, explaining that statistical significance does not mean the validity or validity of the results.
Fake experience and statistical significance

To prove his point, Professor Smoliga deliberately designed an experiment to find a false or scientifically incorrect link. He used X-rays to measure the finger bones of more than 180 people and recorded their body fat percentage and their luck in several completely random games.

What Professor Smoliga discovered is that the D2:D4 ratio has a statistical relationship with body fat composition, and it also has a stronger correlation with how lucky someone is in drawing a random hand of cards.

Of course, Professor Smoliga was not trying to prove that finger ratios make a person lucky. Rather, he was aiming to prove that the D2:D4 ratio can be linked to anything if the researcher tries hard enough to find a strong statistical correlation, and that most of these ratios are likely to be The results and interpretations are random chance rather than having real effects.

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