The authors failed to test if women were under hormonal treatment i.e. taking contraceptive pills.
Several studies showed 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."
"...., Roberts et al. attempted to eliminate these potential confounds by adopting a within-subject design in which women's mate preferences were assessed before and after they began taking the pill. Women starting the pill showed a significant preference shift towards MHC SIMILARITY compared with three months before the pill was taken, a shift that was not observed in the control group of normally cycling women."
The key to long-lasting romance is STRICT PERSONALITY SIMILARITY, but ...
only way to revolutionize the Online Dating Industry is using the 16PF5
normative personality test, available in different languages to assess
personality of members, or a proprietary test with exactly the same
traits of the 16PF5 and expressing compatibility with eight decimals
(needs a quantized pattern comparison method, part of pattern
recognition by cross-correlation, to calculate similarity between
High precision in matching algorithms is precisely the key to open the door and leave the infancy of compatibility testing.