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Sexual Receptivity Signal of Lordosis Posture and Intra-Sexual Competition in Women

1
Department of Psychology, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
2
Department of Psychology and Communications, Texas A&M International University, Laredo, TX 78041, USA
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Author to whom correspondence should be addressed.
Academic Editor: Pawel Miotla
Sexes 2022, 3(1), 59-67; https://doi.org/10.3390/sexes3010005
Received: 19 November 2021 / Revised: 5 January 2022 / Accepted: 10 January 2022 / Published: 12 January 2022
(This article belongs to the Section Sexual Behavior and Attitudes)
Previous research has shown that women may use self-enhancement strategies to compete with one other. Lumbar curvature in women is considered to enhance a woman′s attractiveness, potentially due to its role in bipedal fetal load and sexual receptiveness. The current study investigated the role of lumbar curvature on women’s perceptions of sexual receptiveness as well as its role in women’s intrasexual competitiveness. Study 1 (N = 138) tested and confirmed that women’s intrasexual competition influences their perception of sexual receptivity of women as a function of lordosis posture depicted in a standing posture. Study 2 (N = 69) replicated these results and extended them to other postures, namely, the quadruped and supine positions. Study 3 (N = 106), using a two-alternative forced-choice task, revealed that other women perceive relatively larger arched-back postures as more threatening to their relationship and frequently as being more attractive. Collectively, this work suggests that women consider a lordotic posture in other women as a signal of sexual receptivity and perceive it as a threat to their relationship. This research provides robust support for the sexually receptivity hypothesis of lumbar curvature, questioning the alternative morphological vertebral wedging hypothesis. View Full-Text
Keywords: arching the back; attractiveness; female competition; female threat; receptivity signaling; vertebral wedging arching the back; attractiveness; female competition; female threat; receptivity signaling; vertebral wedging
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MDPI and ACS Style

Pazhoohi, F.; Garza, R.; Kingstone, A. Sexual Receptivity Signal of Lordosis Posture and Intra-Sexual Competition in Women. Sexes 2022, 3, 59-67. https://doi.org/10.3390/sexes3010005

AMA Style

Pazhoohi F, Garza R, Kingstone A. Sexual Receptivity Signal of Lordosis Posture and Intra-Sexual Competition in Women. Sexes. 2022; 3(1):59-67. https://doi.org/10.3390/sexes3010005

Chicago/Turabian Style

Pazhoohi, Farid, Ray Garza, and Alan Kingstone. 2022. "Sexual Receptivity Signal of Lordosis Posture and Intra-Sexual Competition in Women" Sexes 3, no. 1: 59-67. https://doi.org/10.3390/sexes3010005

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