A male hand + a female hand.

Hand shape varies between the two sexes: males typically have larger, relatively broader hands, while females typically have smaller, relatively narrower hands. But hand shape also varies among the various populations around the world: in Asia the avarage hand shape is relatively narrower than in European & North American countries. And there is even a link between hand shape & intelligence!

But in order to understand these patterns properly, one first has to understand the relations ship between hand shape & body length. Because in general, all longer populations in the world (males, Europeans & North Americans) typically display a relatively broad hand shape, while all small populations (females, Asians) typically display a relatively narrow hand shape.



HAND INDEX:

A good measure to describe the shape of the hand is the so-called ‘hand index’, which is defined as the ratio between the ‘hand width’ (= palm width measured at the metacapals) vs. the ‘hand length’ (= the distance between the tip of the middle finger and the distal wrist crease).

The average ‘hand index’ in human kind is close to 0.44, and is typically much higher than the ‘hand index’ seen in primates, which is typically (far) below 0.40 (though in gorillas – the largest of all primate species – the ‘hand index’ is higher than 0.40).

NOTICE: Finger length can also be measured relative to ‘hand length’ & ‘hand width’, but that topic will be discussed later.






HAND SHAPE & SEXE:

In males the ‘hand index’ is typically higher than 0.44, and measures above 0.45 are often seen. While in females the ‘hand index’ is typically lower than 0.44, and measures below 0.43 are not rare at all. These sexe differences are for a large part the result of the body height differences between males and females.


HAND SHAPE & RACE:

The average ‘hand index’ among the various races differs significantly, and is typically lower among asians. In people from China does not vary a lot from the average of human kind, but among for example people from Japan & India the ‘hand index’ is typically close to 0.43 or even lower. At least partly these differences are explained by racial differences in body height.


HAND SHAPE & IQ:

A high hand index typically correlates with a low IQ. And this link between hand shape & IQ has been confirmed in quite a few studies among various types of populations.

In a 1980 study in the former Yugoslavia reported among 540 men a negative correlation between hand index & all 10 measures for IQ.

And the two most common causes for mental retardation (Down syndrome & fragile-X syndrome) are known for having typically a relatively broad hand (= high hand index).

Regarding the sexe differences, one has to be aware of the earlier mentioned point that tall populations typically have a higher ‘hand index’. The fact that women have a lower ‘hand index’ compared to men, is largely neutralized by the fact that women are smaller than men. And therefore there one should not associate this sexe difference with IQ differences among the sexes (because so far there is no evidence for that at all).

And finally there is evidence that when the ‘hand index’ is corrected for body height, then this appears to explain a significant part of the IQ differences that are typically seen between the nations of the world. Though this issue has not been studied thoroughly.


HIGH OR LOW ‘HAND INDEX’ IN INDIVUALS:

The above describes patterns for hand shape implicate that regarding the implications of a high or low ‘hand index’ indivuals, one always has to consider sexe & race before jumping into conclusions!

Time for a hand shape palm reading… what is your ‘hand index’?

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 Almost two years ago, we reported the case of Heramb Ashok Kumthekar, a Marketing student from India who has 12 fingers + 14 toes. While the current ‘polydactyly‘ Guinness World Record of having 25 fingers & toes is still in the hands of a boy named Devendra Harne & a girl named Pranamya Menaria – who are both living in India, Kumthekar’s case was not officially recognized because some of his fingers were webbed (syndactyly). But earlier this week a new case of 26 fingers & toes was reported in Myanmar (former Burma).

YANGON, Myanmar — A 16-month-old girl has been recognized as the world record holder for total fingers and toes – 26!

Le Yati Min was born with 12 fingers and 14 toes. Her family has already coined and copyrighted the phrase, “Give me a high-six!” in both Burmese and English.

A neighbor and friend of the family spoke to reporters outside the girl’s small wooden home, “She already counts higher than all the other kids. She got lucky, I guess. We’re just waiting to see what she can do with a typewriter. We’re guessing she’ll be up to 90 or 100 words per minute by the time she’s five, I mean, six.”

Her mother, Phyo Min Min Soe, also told reporters that Le has not been bothered by the extra digits and has “a good grip on things.”

A neighbor and friend of the family spoke to reporters outside the girl’s small wooden home, “She already counts higher than all the other kids. She got lucky, I guess. We’re just waiting to see what she can do with a typewriter. We’re guessing she’ll be up to 90 or 100 words per minute by the time she’s five, I mean, six.”

Her mother, Phyo Min Min Soe, also told reporters that Le has not been bothered by the extra digits and has “a good grip on things.”

Doctors in the Sawai Man Singh hospital in Jaipur, India, study potential link between palmistry and HIV (AIDS)!

Doctors in the Sawai Man Singh hospital in Jaipur, India, study potential link between palmistry and HIV (AIDS)!

What is the link between palmistry and HIV (AIDS)? Doctors in Jaipur, India, study the answer!

5 Doctor researchers are studying the hand lines of HIV patients to see if they have changed in any way or if they look any different from the hand lines of normal and healthy people!

Palmistry is a common practise in India for reading people’s personalities, matchmaking between men and women, and for reading their future from the palm of the hand. Now the doctors hope the research may find a connection between palmistry and HIV cases.

HIV (AIDS) concerns a big medical problem in India: around 2.5 million men, women and children are living with the human immuno-deficiency virus, commonly known as HIV. This is about the third in the world after Nigeria and South Africa.

The 5 doctors hope that their study will open a new chapter in identifying and curing HIV patients.

Doctor D.K. Mathur, heading the HIV- dermatoglyphics research said:

“… There’s been hardly any research on dermatoglyphics and its relationship with HIV. We thought that if HIV AIDS have any effect on this (dermatoglyphics) or if there are changes in palm lines if a person is seriously affected by HIV. We’ll study palm printouts of 250 HIV patients and 100 palm printouts of healthy people. We’ll do a comparative study to find what are the major differences in whirls and ridges of palms of these people so that HIV people can be given a cure.”

The study has been cautiously been welcomed by the ‘Rajasthan Network for people living with HIV’.

SUGGESTION FOR FURTHER READING:

Doctors study link between Palmistry & HIV!
Palm reading goes medical
24 Percent of Indians consult a palmist!
Palmistry reports: news, articles & readings
What your physique reveals about your health!