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Women’s emotional and sexual attraction to men across the menstrual cycle.

Shimoda, R. and Campbell, A. and Barton, R.A. (2018) 'Women’s emotional and sexual attraction to men across the menstrual cycle.', Behavioral ecology., 29 (1). pp. 51-59.

Abstract

There is ongoing debate about how and why the menstrual cycle affects women’s attraction to men. According to the dual sexuality hypothesis, women form pair-bond relationships with men who provide care but also obtain genetic benefits by biasing mating effort towards men with high-fitness genes during the fertile phase. By contrast, the commitment hypothesis proposes that attachment bonds with primary partners function to strengthen pair-bond relationships by enhancing in-pair attraction at the fertile phase, rather than extrapair attraction. We tested these hypotheses by measuring women’s daily sexual and emotional attraction towards men over the whole menstrual cycle. We employed 1) a urinary luteinizing hormone test to determine the day of ovulation, 2) a 5-part classification of menstrual cycle that identifies a distinct peri-ovulatory phase, and 3) individualized phase identification for each participant. There was a mid-cycle rise in extrapair sexual desire. Women gave and received more care from partners during the menstrual than the mid-cycle phases. Partner’s sexual attractiveness and mutual commitment did not moderate these findings. The results do not support either the dual sexuality or commitment hypotheses, and imply that female self-reported sexual desire is not strictly dependent on cyclic hormonal changes. Our results are more consistent with a recently proposed `spandrel’ hypothesis, positing cycle phase effects as a nonfunctional by-product of raised estradiol. Additionally, we found that, with the date of ovulation estimated by luteinizing hormone tests, 45% of ovulations were misclassified by the backward counting method, which urges caution in interpreting results based on counting methods.

Item Type:Article
Full text:(AM) Accepted Manuscript
First Live Deposit - 05 September 2017
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1093/beheco/arx124
Publisher statement:This is a pre-copyedited, author-produced version of an article accepted for publication in Behavioral Ecology following peer review. The version of record Shimoda, R., Campbell, A. & Barton, R.A. (2018). Women’s emotional and sexual attraction to men across the menstrual cycle. Behavioral Ecology 29(1): 51-59 is available online at: https://doi.org/10.1093/beheco/arx124.
Record Created:04 Sep 2017 15:13
Last Modified:14 Oct 2018 01:09

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