Data from almost 600 women debunking the myth that women are more attracted to masculine faces when they are fertile according to study from the University of Glasgow, UK.
“We found no evidence that changes in hormone levels influence the type of men women find attractive,” said lead researcher Benedict C Jones.
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“This study is noteworthy for its scale and scope — previous studies typically examined small samples of women using limited measures,” Jones added.
“With much larger sample sizes and direct measures of hormonal status, we weren’t able to replicate effects of hormones on women’s preferences for masculine faces.”
Learned from the previous studies’ limitations, Jones’ team recruited 584 heterosexual women to a series of weekly test sessions.
In each one, the women asked to report whether they were currently in a romantic relationship and whether they were currently using hormonal contraceptives. They provided a saliva sample for hormone analyses and completed an assignment that evaluated their liking for different types of male faces.
In each face-preference task, the women saw 10 pairs of male faces and choose the face in each pair that they found more attractive, rating how strong their preference was.
The two faces in each pair were digitally modified versions of the same model. One was altered to have a bit more feminine features and the other was altered to have somewhat masculinized features.
To hide the objective of the study, the researchers interspersed these judgments among other questions.
As expected, women generally rated the masculinized faces as more attractive than the feminized faces.
Preference for the more masculinized faces was also slightly stronger when women considered attractiveness in the context of a short-term relationship as opposed to a long-term relationship.
However, there was no evidence that women’s preferences varied according to levels of fertility-related hormones, such as estradiol and progesterone.
There was also no association between attractiveness judgments and levels of other potentially influential hormones, such as testosterone and cortisol.
These findings run counter to the hypothesis that sexual selection pressures lead women to prefer more masculine mates, who supposedly have greater genetic “fitness,” when they are most fertile and most likely to conceive.
The data also showed that oral contraceptive use did not suppress women’s preference for masculine faces.
“There has been increasing concern that the birth control pill might disrupt romantic relationships by altering women’s mate preferences, but our findings do not provide evidence of this,” says Jones.
In light of these findings, Jones and coauthors are continuing to investigate whether other fertility-related differences hold up in larger, more robust studies.
The study findings published in Psychological Science, a journal of the Association for Psychological Science.
