BIG FIVE: hand signs in Extraversion vs. Introversion!

**Martijn (admin)** Thu Mar 13, 2014 7:37 pm

How to assess the Big Five personality dimension 'Extraversion' from the hand?

During the past 2 years I have presented various research-updates for my study focussed on how to assess 'Extraversion' from the hand (previous updates have been described inside this preceeding topic ).

A new update (march 2014) is persented here, and this topic has been created basically to induce a fresh discussion about the astonishing results, e.g. featured with a brand new 'Extraversion Hand Chart' which represents 6 'vertical' hand factors that have produced a success-score of 95.8% in a sample of 27 extraverts + 21 introverts!

The chart below describes the 6 major (vertical) hand factors:
BIG FIVE: hand signs in Extraversion vs. Introversion! Extraversion-hand-chart-extraverts-ambiverts-introverts

BIG FIVE: hand signs in Extraversion vs. Introversion! Extraversion-hand-chart-extraverts-ambiverts-introverts

To make a long technical story short, this 'Extraversion-handfactor formule' describes how the 6 hand factors have produced the success-score (95.8%) - details regarding how to assess these hand factors are presented at the bottom of the full research report (quote from the report):

"Extraversion-handfactor regression formula:

11.954 - (8.791 x A) - (7.499 x B) - (1.862 x C) - (0.124 x D) + (0.269 x E) + (0.094 x F)

A = finger length to palm width ratio [w = 26%];
B = triradial ab vs. ad ratio [w = 21%];
C = twin line between transverse lines (= head line + heart line) [w=20%];
D = proximal transverse line (= head line) (dis)connection [w = 7%];
E = distal transverse line (= heart line) curve / simian line [w = 18%];
F = hypothenar vs. thenar ratio [w = 8%].

NOTICE: W = indicative weight for the individual hand factor; the 6 factors together make a weight of 100%; interestingly, on top of the 'vertical' aspects the weights suggest that the hand factors associated with the distal-part of the hand (fingers + upper palm) have more weight than the hand factors associated with the proximal-part of the hand!"

The histogram below describes visually how successful this formula is for discriminating 27 extraverts from 21 introverts (all Dutch subjects):
BIG FIVE: hand signs in Extraversion vs. Introversion! Extraversion-histogram-six-hand-factors-introverts-extraverts

BIG FIVE: hand signs in Extraversion vs. Introversion! Extraversion-histogram-six-hand-factors-introverts-extraverts

Finally, because of the impressive results (e.g. the full report describes success-scores varying from 95.8% tot 97.9%) it became a sensible opportunity to develop a concept-chart that describes how all 6 'vertical' hand factors together manifest in a pattern of hand-dynamics that provides a better understanding how the Big Five personality dimension Extraversion tends to become manifest inside the morphology & structure of the hand:
BIG FIVE: hand signs in Extraversion vs. Introversion! Extraversion-principals-extraverts-introverts-males-females

BIG FIVE: hand signs in Extraversion vs. Introversion! Extraversion-principals-extraverts-introverts-males-females

PS. These materials now make it possible to fully understand why the following 2 subjects can be recognized as in respective an 'extravert' (left example) and an 'introvert' (right example):
BIG FIVE: hand signs in Extraversion vs. Introversion! Handprint-extravert-introvert

BIG FIVE: hand signs in Extraversion vs. Introversion! Handprint-extravert-introvert

**Martijn (admin)** Sun Mar 16, 2014 10:38 pm

Though the term 'extraversion' is commonly used to describe behavior in daily language, in the Big Five model it is described to represent of the five major dimensions of personality.

The picture below describes e.g. the 6 underlying facets of the Big Five dimension Extraversion, including: warmth, gregariousness, assertiveness, activity, excitement seeking & positive emotion - which together represent the buildingstones for this dimension.

BIG FIVE: hand signs in Extraversion vs. Introversion! Big-five-neo-pi-r-subdimensions

BIG FIVE: hand signs in Extraversion vs. Introversion! Big-five-neo-pi-r-subdimensions

**Martijn (admin)** Sun Apr 13, 2014 12:51 pm

Earlier today I have described in another topic why the 'dissociated head line' (proximal transverse crease) is more likely involved with introversion, on top of that it also represents a classic sign for 'independent thinkers':
https://www.modernhandreadingforum.com/t2954-3-major-lines-don-t-touch-general-advice#30464

(In this document the INTJ type is described as: 'Life's Independent Thinkers': http://www.mindspring.com/~nancyshoemaker/mbti/paper.pdf)

I can now also substantiate this with elements from the Myers-Briggs personality system, because it actually provides evidence: the so-called 'INTJ' types (Introversion-iNtuition-Thinking-Judging) represent the stereotype of 'The Independent Thinker'!

So, the MBTI model provides fundamental evidence against the hand reading books which (incorrectly) suggest that a 'dissociated head line' may represent a sign for extraversion... especially when these books also support the classic theory that this hand sign also represents a sign of the 'independent thinker'!

NOTICE: 'The independent thinker' is sort of a synonym for the more commonly used terminology regarding 'the Master Mind' (INTJ)

BIG FIVE: hand signs in Extraversion vs. Introversion! 433f10bfc8b420bec60593f70c53b337

BIG FIVE: hand signs in Extraversion vs. Introversion! 433f10bfc8b420bec60593f70c53b337

BIG FIVE: hand signs in Extraversion vs. Introversion! 4-mastermind

BIG FIVE: hand signs in Extraversion vs. Introversion! MyersBriggsTypes

**Martijn (admin)** Thu Sep 18, 2014 11:57 am

BIG FIVE: hand signs in Extraversion vs. Introversion! Susan-cain-600x340

Susan Cain (author of the book “QUIET: The Power of Introverts In a World That Can’t Stop Talking”) presents:

"Quiet Quiz: Are You an Introvert or an Extrovert?"

PS. Susan Cain's TEDtalk is presented below, featured with an impression of her hands during the talk.

BIG FIVE: hand signs in Extraversion vs. Introversion! Susan-10

BIG FIVE: hand signs in Extraversion vs. Introversion! Susan-10

learner Thu Sep 18, 2014 3:12 pm

Hey Martijn,

Are there any lessons to be learnt from her palm? She seems to have low 2d:4d ratio, supple thumb, probably water and air mix in hand shape.

**Martijn (admin)** Thu Sep 18, 2014 4:02 pm

learner wrote:Hey Martijn,

Are there any lessons to be learnt from her palm? She seems to have low 2d:4d ratio, supple thumb, probably water and air mix in hand shape.

Well, I have measured her average 2d:4d digit ratio at 0.98 (slightly higher in the right hand than the left hand) - which is actually slightly high. I also observe that the radial side of her hand is more well developed than the ulnar side of the hand. And it appears that she has slightly flat heart lines (which I have spotted in the TEDtalk video). These all represent features that according my study are typical features seen in introverts.

Finger length to palm length appears within the range of ordinary.

But these are not permanent observations yet, because I have not found other (quality) pictures of her hands.
BIG FIVE: hand signs in Extraversion vs. Introversion! 29CAIN-superJumbo

BIG FIVE: hand signs in Extraversion vs. Introversion! 29CAIN-superJumbo

learner Fri Sep 19, 2014 1:03 am

Martijn (admin) wrote:
learner wrote:Hey Martijn,

Are there any lessons to be learnt from her palm? She seems to have low 2d:4d ratio, supple thumb, probably water and air mix in hand shape.

Well, I have measured her average 2d:4d digit ratio at 0.98 (slightly higher in the right hand than the left hand) - which is actually slightly high. I also observe that the radial side of her hand is more well developed than the ulnar side of the hand. And it appears that she has slightly flat heart lines (which I have spotted in the TEDtalk video). These all represent features that according my study are typical features seen in introverts.

Finger length to palm length appears within the rang of ordinary.

But these are not permanent observations yet, because I have not found other (quality) pictures of her hands.

Thanks Martijn.

**Martijn (admin)** Sun Sep 28, 2014 8:18 pm

BIG FIVE: hand signs in Extraversion vs. Introversion! Introvert-pic-goldfish

Just added some additional considerations regarding how to understand the connection between introversion and the 'dissociated' head line, see:
https://www.modernhandreadingforum.com/t2216p60-6-hand-signs-for-extraversion-introversion#32882

(Independent thinks are more likely to be introverts than extraverts)

**Martijn (admin)** Tue Jan 27, 2015 5:18 pm

A brand new update for the Extraversion hand project is available:

http://www.handresearch.com/diagnostics/phantom-pictures-for-the-hand-in-extraverts-introverts.htm

The new phantom pictures (see below) e.g. describe a 7th vertical hand factor - which concerns the role of the radial- & ulnar distribution of dermatoglyphic patterns inside the palm and fingertips (NOTICE: inside the article the role of the volar pads in especially the formation of arch patterns is discussed by detail because the distribution of arches was found to include a principle which makes it more easy to understand this matter properly):

BIG FIVE: hand signs in Extraversion vs. Introversion! Phantom-picture-for-the-hand-in-extraverts-introverts

BIG FIVE: hand signs in Extraversion vs. Introversion! Phantom-picture-for-the-hand-in-extraverts-introverts

Also, the new histogram (see below) illustrates that the 7th vertical factor made it possible to discriminate all extraverts from the introverts:
BIG FIVE: hand signs in Extraversion vs. Introversion! Extraversion-histogram-seven-hand-factors-introverts-extraverts

BIG FIVE: hand signs in Extraversion vs. Introversion! Extraversion-histogram-seven-hand-factors-introverts-extraverts

rajashri Sun Aug 02, 2015 4:47 am

By the way, creative people are both Extravert and Introvert, one of their many paradoxical traits.
This is based on the study and research of Mihaly Csikszentmihalyi for over 30 years on the psychology of Creative people...."Its a full blast living", as quoted by him.

https://www.psychologytoday.com/articles/199607/the-creative-personality

So, they must be having a mixture of both Extroversion and Introversion signs on their palms ?

rajashri Sun Aug 02, 2015 5:47 am

[quote="Martijn (admin)"][color=brown]

BIG FIVE: hand signs in Extraversion vs. Introversion! Phantom-picture-for-the-hand-in-extraverts-introverts

Great illustration!.......it clarifies the signs and creases very well.

you are a Creative person, Martijn. You have a natural inclination towards research and data collection, good analytical and writing skills. so, what kind of a Headline do you have?
Just curious...!
..... trying to learn about the psychology of Creative minds in general and then relate it with Palmistry, Just the opposite of what palmists do.

**Martijn (admin)** Fri Sep 04, 2015 9:53 pm

During the past weeks I have managed to find the basics for a brand new hand chart focussed on 'emotional stability' (= low scores on the Big Five dimension Neuroticism), derived from a hand study of 41 low scores + 34 high scorers.

(More details will become available here soon, hopefully later this weekend!)

rajashri Wed Sep 09, 2015 1:05 pm

[quote="Martijn (admin)"] Bump

During the past weeks I have managed to find the basics for a brand new hand chart focussed on 'emotional stability' (= low scores on the Big Five dimension Neuroticism), derived from a hand study of 41 low scores + 34 high scorers.

(More details will become available here soon, hopefully later this weekend!)[/quote

Wow!....That would be great which could give us more clarity which is needed NOW!
Illustrations make understanding easy.

Smile

**Martijn (admin)** Sun Sep 13, 2015 11:09 pm

Hi rajashri, thank you for sharing your enthusiasm about this latest development. Very Happy

**Martijn (admin)** Sun Sep 13, 2015 11:10 pm

The new hand chart is now available (see below), and I can now report that I have started working on an article which will describe many more details.

(Meanwhile a new topic has been created where we can discuss the details)

BIG FIVE: hand signs in Extraversion vs. Introversion! Emotional-stability-neuroticism-hand-chart

BIG FIVE: hand signs in Extraversion vs. Introversion! Emotional-stability-neuroticism-hand-chart

Clochette2 Mon Sep 14, 2015 7:17 am

Thanks for those nice illustrations.
In regards to palmistry theory it seems a bit contradictory with the head line closed to life line for extravert. Interesting to have both perspectives. There could be somewhere an explanation?

(Prenatal) Volar pad activity
What does it mean?

**Martijn (admin)** Mon Sep 14, 2015 9:02 am

Clochette2 wrote:Thanks for those nice illustrations.
In regards to palmistry theory it seems a bit contradictory with the head line closed to life line for extravert. Interesting to have both perspectives. There could be somewhere an explanation?

(Prenatal) Volar pad activity
What does it mean?

Well, I can understand your problem here regarding the 'contradiction' between that aspect of my research results and the palmistry-theory that you have in mind - but I think the following might partly solve your problem:

Last year I noticed that there is actually a troublesome issue regarding the palmistry-theory which suggest that 'independent head lines are found in extroverts'... because next to this theory there is also a much more well-known theory which suggests that 'independent head lines are found in independent thinkers'.

The troublesome aspect here becomes apparent in the perspective of the fact that many studies in the field of scientific psychology have indicated that 'independent thinkers' much more often turn out to be 'introverts' (and far less often 'extraverts')...and thus from a fundamental point of view one of the two palmistry-theories is likely not true!

By the way, I have addressed this issue in these two earlier posts of mine:
https://www.modernhandreadingforum.com/t2909-how-to-assess-extraversion-from-the-hand#32883
https://www.modernhandreadingforum.com/t2216p60-6-hand-signs-for-extraversion-introversion#32882

PS. The (prenatal) volar pad relates to the phase during pregnancy just before the fingerprints are formed; you can read more about the relationship between the volar pads and the fingerprints in these articles of mine:
http://www.handresearch.com/diagnostics/palmar-creases-hand-lines-embryology.htm
http://www.handresearch.com/course/hand-reading-course-history-4.htm
http://www.handresearch.com/diagnostics/phantom-pictures-for-the-hand-in-extraverts-introverts.htm

learner Mon Sep 14, 2015 10:26 am

Martijn (admin) wrote:
Clochette2 wrote:Thanks for those nice illustrations.
In regards to palmistry theory it seems a bit contradictory with the head line closed to life line for extravert. Interesting to have both perspectives. There could be somewhere an explanation?

(Prenatal) Volar pad activity
What does it mean?

Well, I can understand your problem here regarding the 'contradiction' between that aspect of my research results and the palmistry-theory that you have in mind - but I think the following might partly solve your problem:

Last year I noticed that there is actually a troublesome issue regarding the palmistry-theory which suggest that 'independent head lines are found in extroverts'... because next to this theory there is also a much more well-known theory which suggests that 'independent head lines are found in independent thinkers'.

The troublesome aspect here becomes apparent in the perspective of the fact that many studies in the field of scientific psychology have indicated that 'independent thinkers' much more often turn out to be 'introverts' (and far less often 'extraverts')...and thus from a fundamental point of view one of the two palmistry-theories is likely not true!

By the way, I have addressed this issue in these two earlier posts of mine:
https://www.modernhandreadingforum.com/t2909-how-to-assess-extraversion-from-the-hand#32883
https://www.modernhandreadingforum.com/t2216p60-6-hand-signs-for-extraversion-introversion#32882

PS. The (prenatal) volar pad relates to the phase during pregnancy just before the fingerprints are formed; you can read more about the relationship between the volar pads and the fingerprints in these articles of mine:
http://www.handresearch.com/diagnostics/palmar-creases-hand-lines-embryology.htm
http://www.handresearch.com/course/hand-reading-course-history-4.htm
http://www.handresearch.com/diagnostics/phantom-pictures-for-the-hand-in-extraverts-introverts.htm

Hi Martijn,

Thanks for the explanation.

Some palmistry books say that independent head lines are found in actors, singers, politicians, so I think that is where confusion came from for me and maybe other palms readers also. I have seen many hands with independent head lines who are introverts.

I have a question.

If independent headline shows independent thinking, then does it mean that head line joined to life line shows non-independent thinking?

**Martijn (admin)** Mon Sep 14, 2015 11:51 am

learner wrote:
...

I have a question.

If independent headline shows independent thinking, then does it mean that head line joined to life line shows non-independent thinking?

Yes learner, according simple logics I think that's indeed what that classic palmistry-theory suggests.

learner Mon Sep 14, 2015 12:03 pm

Martijn (admin) wrote:
learner wrote:
...

I have a question.

If independent headline shows independent thinking, then does it mean that head line joined to life line shows non-independent thinking?

Yes learner, according simple logics I think that's indeed what that classic palmistry-theory suggests.

Thanks,

Clochette2 Mon Sep 14, 2015 4:26 pm

Thanks a lot.
It is a very interesting "debate". I will take more time to read through your many links and come back. I find it really nice to see your research and compare with palmistry. Even in palmistry theories they can contradict with meanings and this can be confusing.

I wanted to add
I noticed that contradiction with people who look like extraverted but their head and life lines are joined until the index-medium finger . It led me to think it could be an evolution of personality?
They were "shy", sometimes uneasy childhood (their own perception of being a child in their environment )
But they worked on it, and they have sometimes even become loud people. ..
Just an assumption from their feedback.

**Martijn (admin)** Wed Mar 02, 2016 3:15 pm

BIG FIVE: hand signs in Extraversion vs. Introversion! Hand-palm-fingers-thumb-dna

The following quick summary describes the most significant hand signs for the Big Five personality dimension Extraversion (taken from the article presented at the bottom of this post):

"Summary of the most significant hand signs in Extraversion high scorers:

- Hand level 5: (slightly) short fingers relative to palm width bare potential to become significant.

- Hand level 8: combinations involving the following dermatoglyphic features bare potential to become significant: large long loop or whorl in the 4th IDR, whorl on the hypothenar zone, high amount of digital triradii, high amount of (small) ulnar loops, low a-b ridge count, and/or high positioned axial triradius.

...

Summary of hand signs that bare the highest potential to become significant in Extraversion low scorers:

- Hand level 5: (slightly) long fingers relative to palm width bare potential to become significant.

- Hand level 8: the combination of fingerprints & palm quite often displays a low total amount of triradii; it appears that combinations involving: (non-radial) arch fingerprints, missing of a c-triradius, total amount of interdigital triradii of just 3, and/or a missing- or very low positioned axial triradius, represent a typical dermatoglyphic constellation. A high a-b ridge count and a relatively high termination of the A-line represent other dermatoglyphic features that bare likewise potential to become significant.

- Hand level 9: a flat heart line or a constellation similar to a bridged simian line also bare potential to be significant."

More summaries for 36+ other conditions:
Decoding the language of the hand: how to find 36 conditions with just 54 major hand signs!!

(The table below provides an easy opportunity to find the most significant hand sign combinations for a specific condition; the table also represents the foundation of this masterclass mini-course in scientific hand reading)

BIG FIVE: hand signs in Extraversion vs. Introversion! Decoding-the-language-of-the-hand-syndromes-disorders-personality-dimensions

BIG FIVE: hand signs in Extraversion vs. Introversion! Decoding-the-language-of-the-hand-syndromes-disorders-personality-dimensions

**Martijn (admin)** Sat Oct 15, 2016 11:09 am

Meanwhile a new hand chart became available for assessing the Big Five dimension Extraversion from the hand by combining hand shape, dermatoglyphics and the major palmar lines:

BIG FIVE: hand signs in Extraversion vs. Introversion! Big-five-personality-dimensions-extraversion-hand-signs

BIG FIVE: hand signs in Extraversion vs. Introversion! Big-five-personality-dimensions-extraversion-hand-signs

Plus an overview of the position of the personality dimension Extraversion
in the full perspective of the Big Five model:

BIG FIVE: hand signs in Extraversion vs. Introversion! Big-five-personality-dimensions-30-neo-pi-r-facets-extraversion

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