The 16PF5 normative personality test available in different languages is a proprietary test, the owner is the IPAT (the Institute for Personality and Ability Testing, Inc.) so any dating site should acquire the license to use it (over USD100,000 per year)

Dating sites offering compatibility matching methods had decided:

- to use mostly different free versions of the Big5, like eHarmony, Meetic Affinity, Parship, Be2, PlentyOfFishChemistryPredictor, MyType
OR
- to develop a proprietary test instead like Chemistry, PerfectMatch and others.

Compatibility matching methods has 2 steps:
1) to measure personality traits or other variables.
2) to calculate compatibility between prospective mates.

The Big5 models personality with 5 variables, and the 16PF5 with 16 variables.

Using Sten scores (Standard Ten)
The Ensemble of the Big5 is 10*10*10*10*10 == 10E5 so it is possible to use simple/multiple linear/logistic regression equations to calculate compatibility between prospective mates
and
The Ensemble of the 16PF5 is 10*10*10*10*10*10*10*10*10*10*10*10*10*10*10*10 == 10E16 a very big number as All World Population is nearly 6.7 * 10E9 so it needs a more powerful quantitative method than simple/multiple linear/logistic regression equations to calculate compatibility.

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* Actual online dating sites offering compatibility matching methods, when calculating compatibility between prospective mates, have less or at least the same precision as searching on one’s own. [in the range of 3 or 4 persons compatible per 1,000 persons screened]
* That is because they use:
a) simplified versions of personality traits, instead of the 16PF5 or similar with the complete inventory (16 variables)
b) inadequate quantitative methods to calculate compatibility between prospective mates, like eHarmony which uses Dyadic Adjustment Scale or other sites which use multivariate linear / logistic regression equations o other equations.

To solve that problem I propose:
*) the 16PF5 or similar normative personality test to measure personality of normal persons over 26 years old interested in serious dating.

*) a new quantitative method to calculate compatibility between prospective mates, based on quantized pattern comparison (part of pattern recognition by correlation) named LIFEPROJECT method.
The value of my algorithm is to achieve far more precision than searching on one’s own [in the range of 3 persons compatible per 100,000 persons screened, 100 times better than actual competitors]

Kindest Regards.

Fernando Ardenghi.
Buenos Aires.
Argentina.
ardenghifer@gmail.com

The 16PF Fifth Edition, 16PF5 is from 2004.

The 16PF5 is a normative test available in:
Afrikaans
Chinese – Traditional
Czech
Danish
Dutch
English for Australia
English for Canada
English for India
English for South Africa
English for the United Kingdom
English for the United States
Filipino
French (European)
German
Greek
Italian
Japanese
Norwegian
Portuguese (European and New World)
Portuguese of Brazil
Slovak
Spanish (Castilian)
Spanish-American
Swedish
Turkish

WorldWide, there are over 5,000 -five thousand- online dating sites ……… but no one is using the 16PF5 to assess personality of their members!

Kindest Regards.
Fernando Ardenghi.
Buenos Aires.
Argentina.
ardenghifer@gmail.com