Lordosis in Humans. Ayten Yesim Semchenko et al. Personality and Social Psychology Bulletin, Dec 2 2022. https://doi.org/10.1177/01461672221115218
Abstract: Despite progress in attractiveness research, we have yet to identify many fitness-relevant cues in the human phenotype or humans’ psychology for responding to them. Here, we test hypotheses about psychological systems that may have evolved to process distinct cues in the female lumbar region. The Fetal Load Hypothesis proposes a male preference for a morphological cue: lumbar curvature. The Lordosis Detection Hypothesis posits context-dependent male attraction to a movement: lordosis behavior. In two studies (Study 1 N: 102, Study 2 N: 231), we presented men with animated female characters that varied in their lumbar curvature and back arching (i.e., lordosis behavior). Irrespective of mating context, men’s attraction increased as lumbar curvature approached the hypothesized optimum. By contrast, men experienced greater attraction to lordosis behavior in short-term than long-term mating contexts. These findings support both the Lordosis Detection and Fetal Load Hypotheses. Discussion focuses on the meaning of human lordosis and the importance of dynamic stimuli in attractiveness research.
Check also Sexual Attractiveness: a Comparative Approach to Morphological, Behavioral and Neurophysiological Aspects of Sexual Signaling in Women and Nonhuman Primate Females. Bernard Wallner et al. Adaptive Human Behavior and Physiology, March 28 2019. https://www.bipartisanalliance.com/2019/03/a-comparative-approach-to-morphological.html
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