I suggest the 16PF5 normative test to assess personality similarity* between participants, to check if personality similarity* is strongly correlated with single women who preferred odours of MHC-similar men.

The 16PF5 normative test, invented in 1949, is available in different languages:
Afrikaans, Chinese, 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, German, Greek, Italian, Japanese, Norwegian, Polish, Portuguese (European and New World), Portuguese of Brazil, Spanish (Castilian), Spanish-American, Swedish, Slovak, Turkish.

The 16PF5, the 5th version of the test, includes 16 independent variables that take integer values from 1 to 10
(A) Warmth; (B) Reasoning; (C) Emotional Stability; (E) Dominance, (F) Liveliness; (G) RuleConsciousness; (H) Social Boldness; (I) Sensitivity; (L) Vigilance; (M) Abstractedness; (N) Privateness (O) Apprehension; (Q1) Openness to Change; (Q2) SelfReliance; (Q3) Perfectionism; (Q4) Tension.

The 16PF5 also includes the Big Five Traits, with different names: (EX)Extraversion, (AX)Anxiety, (TM)Tough−Mindedness, (IN)Independence, (SC)Self−Control.
(Costa&McCrae: Extraversion, Neuroticism, Openness, Agreeableness, Conscientiousness)

*similarity
the word ’similarity’ has many/different meanings for online dating sites, academics, researchers, psychologists, etc. Similarity could be calculated using different available methods.

Also I am the inventor of an innovative and high precision quantitative method that compares similarity between quantized patterns, which takes into account the score and the trend to score of any pattern.
like:

The pattern 6.7.6.8.9.6.7.7.8.7.2.5.8.7.3.4
is 74.79865772% +/- 0.00000001% similar to
the pattern 5.7.4.8.7.4.5.6.4.6.8.9.6.8.4.4

The pattern 6.7.6.8.9.6.7.7.8.7.2.5.8.7.3.4
is 92.55033557% +/- 0.00000001% similar to
the pattern 7.7.6.8.8.7.6.5.8.7.4.5.7.7.3.4

The pattern 6.7.5.8.8.6.7.7.8.7.4.5.8.7.3.4
is 88.38926174% +/- 0.00000001% similar to
the pattern 5.6.4.7.7.5.6.6.7.6.3.4.7.6.2.3

The pattern 6.7.5.8.8.6.7.7.8.7.4.5.8.7.3.4
is 87.58389262% +/- 0.00000001% similar to
the pattern 7.8.6.9.9.7.8.8.9.8.5.6.9.8.4.5

Regards,

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

Could you elaborate?

What personality traits would you measure, and how would you use them to screen the subjects? For what purpose?

To a minor degree yes – but by far the majority of revenue generation is down to the site design, how it glows the user from a visitor to a basic member to a paying subscriber – and that’s the clever stuff.

There’s now a few high profile case studies like Tim Rees who market their site in exactly the same way before but using WLD as their platform and they see their conversion rates – short and long term – grow by up to three or four times.

Ross

The paper of women preferring men’s odours is available at:

http://rogue.ncl.ac.uk/file_store/nclep_141221062274.pdf

“We registered 193 women, aged 18–35, as participants …. Most female participants were students or staff at Newcastle University, recruited by advertisement or word of mouth; a small number were recruited from local contraceptive clinics.”
“Male participants were 97 heterosexual, non-smoking students or staff, aged 18–35″

The study is about white British women smelling sweated white_cotton_T_shirts worn in bed by white British men. (shirts not perceived as smelling of tobacco or perfumed products.)

It was a pity the researchers did not use any personality test to screen the participants.
Also, participants under 26 years old could have their personalities not consolidated yet.

Regards,

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