10 Body Parts That Reveal Your Intelligence


– [Narrator] We can
most effectively assess someone’s intelligence by testing them to find out their IQ score. However, lots of articles
online keep saying that there are visual
shortcuts we can use instead. Apparently, all it takes is observing the right part of someone’s body,
and inferring from there. But can we really look
at someone’s fingernails to find out they have fewer
brain cells than Homer Simpson? That’s what we’re going to find out now. A bit of a disclaimer first
before starting this countdown. All entries listed are not to be taken as an absolute measure. Although a good number of these entries are backed by scientific research, they will never accurately represent the variety of differences
of the world population. Number 10, hands. Susan Goldin-Meadow, chair
of Developmental Psychology at the University of Chicago, has researched the subject
of reinforced acquisition of information with hand
gestures over the years. The basic concept is that hand gestures represent what is known
as embodied cognition. That is, hands are able
to form expressions that indirectly show how
we work out our thoughts. During her TED talk in
2011, she demonstrated how specific child subjects in one experiment showed different levels of understanding when children reacted and created different explanatory gestures
of varying complexities to the same given problem or situation. This was further demonstrated with other similar child
subjects as they were also able to pick up information
significantly better when the appropriate
representational gestures were added to explanations. In another similar
research that also involved the topic of hands
representing intelligence, German scientists at the
Humboldt University of Berlin also demonstrated in a
controlled experiment, that gestures are more prevalent in people with higher fluid intelligence. Based on the results of their tests, the higher the participant’s
rated fluid intelligence, the higher the tendency to explain things using representational
hand and arm gestures. So by using hand gestures
you can tell someone might have a better understanding than someone not using them, as their gestures try to move, mold, and form around what the speaker is currently referring or explaining. Number nine, fingers and nails. The lunula, which is
the white crescent thing in your fingernails, is believed to have been linked to overall body health for many centuries. The ancient Chinese in particular, believed that the middle finger’s lunula is said to be affected by the body’s cardiovascular and nervous system. For example, higher
susceptibility to stress, and thus lower mental performance, is often attributed to the
formation of the lunula. As promising as it sounds however, this has yet to be clinically proven, and is often regarded as a
traditional superstition. As for the fingers, one
specific research paper at the University of Alberta
showed a possible relation between intelligence and the digit ratio, which is the average
predicted finger lengths in accordance to hormone
production levels, and thus body development rates, during an infant’s formative months. Men usually have ring fingers that are longer than index fingers, so their finger ratio is lower than one. In females, the two fingers are more likely to be the same length. Because of this sex difference, some scientists believe
that a low ratio could be a marker for higher prenatal
testosterone levels, although it’s not clear how the hormone might influence finger development. With the girls, there was no correlation between finger ratio and numeracy, but those with higher ratios, presumably indicating
low testosterone levels, had better scores on verbal abilities. Long ring fingers were
also loosely associated with better financial trading skills. This was particularly prevalent in men, as proven by yet another
similar research paper by the University of Bath in the UK. In this research, index and
ring finger length differences also often coincided
with better analytical and mathematical performance, due to the perceived increase in male-oriented hormone levels before birth. Number eight, toes. Throughout the ages,
abnormal foot proportions have been traditionally
associated with intelligence. The most famous example perhaps is the medical condition
known as Morton’s Toe. Long story short, if you
have a much bigger index toe than the actual big Hallux toe, then it is said that you have a good capacity for mental acuity. Several other cultures also
followed similar traditions of valuing bigger toes
than the usual big toe. In fact, another term for
Morton’s Toe is Greek Foot. One direct explanation as to
why the big toe phenomenon has been linked to intelligence is that Morton’s Toe is
often genetic in nature. Which means the trait is
passed down through families, and is then correlated to the inheritance of certain biological characteristics. It is most likely that
intelligence eventually became the most important
out of all these traits, and was the one that got associated with this physical condition. Number seven, earlobes. Researchers at the
Harvard University in 2011 have discovered a
somewhat weird correlation between asymmetrical
earlobes and people with relatively exceptional
leadership potentials. The sample group that had
markedly bigger ear lobes on one side was reported to be able to perform better by at least 20%. The study was of course presented
with a strong disclaimer. However, the researchers posited
that asymmetrical earlobes may yet be another
specific inherited trait, much in the same manner as Morton’s Toe. The abnormal earlobes were shown to be part of a genetic set of traits, which as a whole is packaged
with other qualities like increased level of learning. Also, people who had
such physical qualities often grew up being more sensitive about information around them. Though this connection is linked to leadership qualities
anyway, so it is somewhat expected given the
aforementioned correlation. Number six, hair. The specific tidbit that
led to a widespread debate related to hair and
intelligence is attributed to a supposed research project
conducted in the 1990s. Led by psychiatrist Dr. Aikarakudy Alias, the study focused on medical
students in the United States, and the results have
pointed that at least 45% of the better trained and educated sample were actually hairier than the rest. The study even looked at the top IQ levels of at least 117 Mensa members, with almost all of them observed to also have thick body hair. Unfortunately, the
research did not indicate the cause of this correlation, so we’re unsure as to whether body hair is really attributed
to higher intelligence. This could well be just another form of generation inheritance. Simply put, people from the past just happened to have found wise men, who also by chance are
bushy, to be more attractive, thus seeding a new generation that have both specific traits. Number five, lips. There are no direct peer reviewed studies or institutional research
that discusses lips as an indicator of intelligence. That being said, it is
generally believed that thinner lips are associated with higher potential intelligence for men. One simple explanation
for this is that lip size affects someone’s level
of mouth articulation. Every word is pronounced
clearer with thinner lips compared to other lip shapes or sizes, and this makes it seem as
if people with thinner lips are more intelligent. On the flip side,
international women’s magazine Cosmopolitan pointed
out that a well-defined cupid’s bow shaped upper lip
is a sign of feminine wit. Not the academic genius type of intellect, but a more practical,
more pragmatic variety. Also, like in men’s thin lips, such lip shape also makes mouth
articulation more apparent, thus increasing someone’s
intellectual appeal. Number four, hips. In 2009 researchers at the
Universities of Pittsburgh and California, Santa Barbara, surveyed at least 15,000 women and found out that the
iconic sexy hourglass figure may have an indirect link to someone’s IQ. Specifically, data from cognitive tests and data of the hip-to-waist
ratio of the very same subjects is somehow related to each other. The bigger the hip measurement difference, the higher the subject’s IQ appears to be. The results not only
reflected on female subjects, but even seem to extend
to their children as well. The reason for this correlation? The curvier, sexier bodies
apparently represented higher levels of omega-3 fatty acids, an essential body fat directly responsible for brain growth in developing infants. Of course, this is not
universal across all women, but the link was demonstrated
to be sufficient enough to put forward a solid
conclusion for the study. Number three, eye color. Eye color has never been proven to have any significant factor in determining one’s personal intellectual capacity. It is more of an ethnicity
thing and as such, a person’s related eye color
will more likely show signs of mental acuity that reflects
the dominant personality and culture associated with the color. With that said, the eye
color that is most closely related to wit and
innovative thinking is green. Green eyes are typically
developed from a combination of vastly different surface pigmentation, indicating a relatively varied gene pool among those who have it. People who have green
eyes also usually have ancestries traced to areas close to North, Central and Western Europe. This combination of genetic
diversity is thought to lead to signs of higher intelligence. Number two, head. Determining someone’s
intelligence from the size of their head is a far
more understandable concept than any other in this list, because obviously it would
suggest they have a bigger brain. Barring any extreme artificial cranial deformation practices, the general estimate according
to the Scientific American, is that there is a variability
of about nine to 16 percent in overall mental acuity
when the difference in head size is considered. In this case, there really
is a tangible difference, especially considering
the difference of humans compared to other similarly
intelligent creatures with larger brains, such as dolphins, octopus, and elephants. Unfortunately this somewhat
unimpressive variance factor also means that even
with the size relation, the difference won’t be that
of a genius and an imbecile. In fact, due to various
performance factors, this may not even be apparent unless we’re talking about
direct memory evaluation. In addition, the ratio
of a person’s head size in comparison to the rest of
the body is also considered. Thus, taller people won’t necessarily have the default advantage. Before I reveal the most amazing example, I’d like to remind you to subscribe if you’ve enjoyed this video. We upload amazing,
fact-filled list videos daily. Also, make sure to click that bell icon to stay updated or you’ll
regret missing out on some amazing knowledge that
could have filled your brain! Now lets get back to it. Number one, height. Have you heard of the Flynn effect? It refers to the substantial
and long-sustained increase in IQ test scores from roughly
1930 to the present day. In other words, people seem to
be getting smarter over time. So, how does this relate to the link between height and intelligence? Well, nutrition is one explanation for rising height and intelligence over time. It has been suggested that
increases in average height, in response to improved nutrition, have been accompanied by
an increase in brain size, and is one explanation for an overall rise in measured intelligence
among all tested populations. However, it is important to realize that this difference in
height and intelligence is only related to potential
and realized height. If your genetics only
enables you to grow to 5ft 2, and you grow to that height, it’s likely your brain has also developed to its full potential, so nutrition is also unlikely to affect your mental capacity. But other ideas relating
to the link between height and intelligence
have also been proposed. A somewhat old 2011 peer-reviewed
research paper submitted at the National Center for
Biotechnology Information presented a positive correlation between genetics and environmental elements which affect the intelligence
versus height ratio. Long story short, the
summary of the report has suggested that intelligence does seem to rise with height, but mainly due to other more
positive health factors. Another similar academic study made two years later in 2013
backed this idea even further, with the observation that this
apparent genetic prevalence is linked to subsequent
generations of selective mating. Tall people that are
indeed actually intelligent got prioritized by female
mates within the gene pool, with succeeding generations repeating the same pattern until today. Health may be subjective,
but these studies do show that it is possible for certain genetic characteristics, such as height, to be linked together within
generations of people. Are you convinced by my explanations, or do you think they’re all
just loose correlations? Let me know what you think in the comments section down below, and thanks for watching.

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