Paper about 2D:4D finger-length ratio

PAPER: "Short- and Long-Term Relationship Orientation and 2D:4D finger-length ratio."

Study 1 explored the relationships between 2D:4D finger length ratio and Relationship Orientation (Short- and Long-Term Relationship Orientation) in a sample of men. 

Study 2 extended Study 1, examining both sexes and further variables which might influence Short- and Long-Term Relationship Orientation. Earlier studies found different correlations between 2D:4D and the construct of interest, depending on the hand (left or right) and sex of the participants. Therefore, we report our correlations between 2D:4D and Short- and Long-Term Relationship Orientation for both hands separately.

(mistakes at Fig 1. and Fig 2., the right part of figures relates to left hand)

That paper does not assess personality of participants and does not take into account actual facts like:
* contraceptive pills / contraceptive hormonal treatments
* women who work and earn more money than men.

That paper also does not cite fresh, new & important studies showing contraceptive pills users make different mate choices, on average, compared to non-users.

1) "Human oestrus" Gangestad & Thornhill (2008)
"Only short-term but not long-term partner preferences tend to vary with the menstrual cycle"

2) "Does the contraceptive pill alter mate choice in humans?" Alvergne & Lummaa (2009)
".. whereas normally cycling women express a preference for MHC (Major Histocompatibility Complex) dissimilarity in mates, pill users prefer odours of MHC-SIMILAR men, indicating that pill use might eliminate adaptive preferences for genetic dissimilarity."

3) "Personality and reproductive success in a high-fertility human population"  Alvergne, Jokelac & Lummaaa (2010)
The reproductive success of both men and women is influenced by our personality traits, according to the paper.
The study, found that women with higher levels of neuroticism and more extravert men, are likely to give birth to a larger number of children in societies with traditionally high birth rates.



Latest Research in Theories of Romantic Relationships Development shows: compatibility is all about a high level on personality* similarity* between prospective mates for long term mating with commitment.
*personality measured with a normative test.
*similarity: there are different ways to calculate similarity, it depends on how mathematically is defined.

Dannon's Activia, DanActive health claims draw USD21M fine.

Dannon in USA — part of the world's biggest yogurt maker Danone— agreed to pay a USD21 million fine and stop making exaggerated health claims for two popular Dannon products under a settlement with the federal government and attorneys general from 39 states on Wednesday 15th.

It follows Monday's USD2.1 million FTC settlement with kids-vitamin maker NBTY over unsupported health claims and because the products didn't have the amount of omega-3 claimed.

The government says Dannon will stop claiming that one daily serving of Activia yogurt relieves irregularity and that DanActive helps people avoid catching colds.

"These types of misleading claims are enough to give consumers indigestion," FTC Chairman Jon Leibowitz says. "Companies like Dannon shouldn't exaggerate the strength of scientific support."


Exactly the same should be applied for the Online Dating Industry: eHarmony, Chemistry, PerfectMatch, PlentyOfFishMarriagePredictor, MeeticAffinity, Parship, Be2, and others.

See the article:

"The horse named Jim in the Online Dating Industry"

Chemistry, 6 years from its genesis.

Six long years ago, during December 2004, Dr. Helen Fisher was contacted by the people from Match to create Chemistry, the last innovation at Match, a compatibility matching method.

Up to now, she had published 2 posters and 1 paper.

Interesting to read them, although she CAN NOT prove her matching algorithm, used at Chemistry, can match prospective partners who will have more stable and satisfying relationships than couples matched by chance, astrological destiny, personal preferences, searching on one's own, or other technique as the control group in a peer_reviewed Scientific Paper.


POSTER "Four Primary Temperament Dimensions Based on Neurochemistry"
Personality is composed of two basic types of traits:
traits that an individual acquires, dimensions of character;
and
traits with biological underpinnings, dimensions of temperament (Cloninger 1987).

Temperament is mediated by many factors and can be only indirectly associated with neurochemical data.
Data were collected on all four scales on an Internet dating site (Chemistry), regularly between 2006-2007 until reliability was obtained in a United States sample of 39,913 anonymous men and women.
Participants completed demographic information, the Fisher-Rich-Island Neurochemical Questionnaire (FRI-NQ), and validity questions, with the goal of finding a romantic partner.  Respondents ranged in age from 18 to 88 years (M = 37.0; SD= 12.6); 56.4% were female (N = 22,521); 89.6% (N = 35,759) were seeking an opposite-sex partner; and 45.2% (N = 18,035) had children. 
The FRI-NQ measure was placed on an international dating site in 39 other countries, beginning in January 2008, and data to measure reliability were collected on 15,000 individuals in each of these translations: German, French, Spanish, English (Australian sample), and Swedish.  
All individuals expressed all four temperament dimensions; yet individuals varied in the degree to which they expressed each.
* Dopamine and Norepinephrine (DA/NE)
* Serotonin (5-HT)
* Testosterone (T)
* Estrogen and Oxytocin (E/OT)
As predicted, men and participants who reported their occupation as engineering scored higher on the proposed T scale, women and participants who indicated they were teachers scored higher on E/OT.  On the proposed 5HT scale, persons reporting a religious affiliation obtained the highest mean score, followed by persons describing themselves as 'spiritual but not religious', with the lowest scores obtained by those describing themselves as agnostics or atheists.  Persons describing their friends as 'Adventurous' tended to score higher on the proposed DA/NE scale.



POSTER "Four Primary Temperament Dimensions in the Process of Mate Choice"
The purpose of this investigation was to examine the role of temperament in the INITIAL attraction phase of mate choice.
Cross-cultural surveys, brain imaging studies, population and molecular genetics, comparative research and twin studies suggest that many traits of temperament are heritable, relatively stable across the life course and linked to specific gene pathways and/or hormone or neurotransmitter systems. 
Participants from the online website Chemistry who provided consent for inclusion in research were selected for this study. The final sample comprised 28,128 male (n=17,776) and female (n=10,352) heterosexual adults, who provided data on their selections for a first meeting with a potential romantic partner and who gave a non-negative (positive or blank) rating of their partner after returning from the first date were selected for the analysis.
A 56-item temperament measure, the Fisher-Rich-Island Neurochemical Questionnaire (FRI-NQ) was used to assess compatibility between participants.
Participants were anonymous adults who regularly used Chemistry dating site between 2006-2007 for the purpose of finding a romantic partner. Participants were selected based on their research consent and the release of their SELF-REPORTED demographic, dating, and personality data.  The final scales were VALIDATED on a sample of 39,913 participants from this dating site.
Similarity attracted among those predominantly expressive of the proposed  dopamine/norepinphrine and serotonin scales; while opposites attracted among those predominantly expressive of the proposed testosterone and estrogen/oxytocin scales. 
A study of long term married opposite-sex couples is currently underway to assess the durability of initial biological attraction.
Also Dr. Heidi Island from Pacific University is preparing the paper:
"Temperament as a Mechanism for Mate Choice: an hypothesis and pilot study."



PAPER "The Second to Fourth Digit Ratio: A Measure of Two Hormonally-based Temperament Dimensions"
"Individuals who reported a longer 4th finger relative to 2nd expressed high scores on the proposed testosterone scale; individuals who reported a longer 2nd finger relative to 4th or 2nd and 4th digits of equal length expressed high scores on the proposed estrogen/oxytocin scale."



 









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Please remember personality = temperament + character
Latest Research in Theories of Romantic Relationships Development shows: compatibility is all about a high level on personality* similarity** between prospective mates for long term mating with commitment.
*Although no actual fresh paper uses the 16PF normative personality test (they mostly use different versions of the normative Big5 personality test instead) and linear or logistic multivariate regression equations to calculate similarity, they clearly show a connection between personality similarity and marital happiness / dyadic success (stability and satisfaction) for some persons.
**Similarity is a word that has different meanings for different persons or companies, it exactly depends on how mathematically is defined.



Also there is a similarity trilogy between genetic, mate choice and personality based recommender systems.
 

The Scramjet (supersonic combustion ramjet) engine

Sometimes I read posts about a "fairly complex matching algorithm" for online dating
or
receive emails promoting "a sophisticated algorithm" and then I laugh!!!
Matching algorithms do not need to be complex or sophisticated, they need to be effective.
From Merriam-Webster Dictionay:
effective (Synonyms: effectual, efficacious, efficient, fruitful, operative, potent, productive):
a : producing a decided, decisive, or desired effect.

Those complex or sophisticated matching algorithms are like the Wright R-3350 Duplex-Cyclone used in the Boeing B-29 Superfortress, useless at all to ....... break sound barrier!!!

LIFEPROJECT METHOD is so simple!
It is only strict personality similarity. A Scramjet engine.
Read Innovations: to take the 16PF5 test 3 times.

As for a comparison, please see the following articles
The Wright R-3350 Duplex-Cyclone used in the Boeing B-29 Superfortress
The Wright R-3350 Duplex-Cyclone was one of the most powerful radial aircraft engines produced in the United States, useless at all to break sound barrier!

Jet Engine
and
the Scramjet (supersonic combustion ramjet)

The Meetic Group is slowly collapsing.

The Meetic Group is slowly collapsing.


In the same road as Be2

I am featured in the Latest Mobile Social Web 2.0 Forecasts, Challenges & Regulations 2010-2014 from Juniper Research, where I said "Perhaps by 2014, the mobile concept will be diluted (or disappear) for dating purposes with the majority of subscribers using netbooks/iPads with mobile broadband modems, or WiFi, rather than smartphones".

Visualizing Friendships using Facebook.

Visualizing Friendships using Facebook.

See how Russia and China do not use Facebook.

South America is big.
The market is unexploited.

eVow