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Fisherian runaway: Difference between revisions
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Women's hourglass shaped waist is not linked to higher RS or better health.<ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6563790/</ref> Unless there are strong confounds in industrial nations (such as high [[mutational load]] and low ecological harshness), the absence of a link to RS means these traits are unlikely sexually selected. Men's V-shaped upper body, especially determined by the collar bone length, may be subject to sexual selection as it is [[sexual dimorphism|sexually dimorphic]], linked to RS and women's attractiveness ratings. At the same time, a long collar bone actually decreases chances of survival, resulting in decreased strength and throwing ability (see [[body attractiveness]]). However, adaptations that merely fake physical strength may also have evolved as a means of physical intimidation during male [[intrasexual competition]]. See the [[penis]] article for a discussion of the plausibility of sexual selection having acted upon it. | Women's hourglass shaped waist is not linked to higher RS or better health.<ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6563790/</ref> Unless there are strong confounds in industrial nations (such as high [[mutational load]] and low ecological harshness), the absence of a link to RS means these traits are unlikely sexually selected. Men's V-shaped upper body, especially determined by the collar bone length, may be subject to sexual selection as it is [[sexual dimorphism|sexually dimorphic]], linked to RS and women's attractiveness ratings. At the same time, a long collar bone actually decreases chances of survival, resulting in decreased strength and throwing ability (see [[body attractiveness]]). However, adaptations that merely fake physical strength may also have evolved as a means of physical intimidation during male [[intrasexual competition]]. See the [[penis]] article for a discussion of the plausibility of sexual selection having acted upon it. | ||
=== Behavior === | === Behavior === | ||
Evolutionary psychologist Geoffrey Miller suggested strong positive-feedback processes in sexual selection to have given rise to higher [[IQ|human cognition]] and behavior, which he regards as too advanced and exaggerated for the necessities of human survival.<ref name="mm">https://ontherapyaspse.files.wordpress.com/2012/04/geoffrey-miller-the-mating-mind.pdf</ref> Indeed, intelligence itself is sexually attractive with the most attractive IQ score being 120, far above average intelligence.<ref>https://www.researchgate.net/publication/321640585</ref> In some mating contexts, male courtship consists in eliciting super stimuli in women's brains by cognitive performances such as poetry, dancing, art and humor.<ref name="mm"></ref> However, the overall evidence suggests such behavior and intelligence evolved through through [[intrasexual competition|intrasexual]] and inter-group competition and survival selection rather than sexual selection. Men with a [[dark triad|dark personality]] do have higher reproductive success and at least some women are sexually attracted to such men (see [[#Maladaptiveness|below]]), which may be a potential trait that has been sexually selected and/or that is under sexual selection, and possibly, runaway selection. | Evolutionary psychologist Geoffrey Miller suggested strong positive-feedback processes in sexual selection to have given rise to higher [[IQ|human cognition]] and behavior, which he regards as too advanced and exaggerated for the necessities of human survival.<ref name="mm">https://ontherapyaspse.files.wordpress.com/2012/04/geoffrey-miller-the-mating-mind.pdf</ref> Indeed, intelligence itself is sexually attractive with the most attractive IQ score being 120, far above average intelligence.<ref>https://www.researchgate.net/publication/321640585</ref> In some mating contexts, male courtship consists in eliciting super stimuli in women's brains by cognitive performances such as poetry, dancing, art and humor.<ref name="mm"></ref> However, the overall evidence suggests such behavior and intelligence evolved through through [[intrasexual competition|intrasexual]] and inter-group competition and survival selection rather than sexual selection.<ref>https://www.sciencedirect.com/science/article/abs/pii/S1090513821000453</ref> Men with a [[dark triad|dark personality]] do have higher reproductive success and at least some women are sexually attracted to such men (see [[#Maladaptiveness|below]]), which may be a potential trait that has been sexually selected and/or that is under sexual selection, and possibly, runaway selection. | ||
== Examples == | == Examples == | ||
<gallery mode="packed" widths="400" heights="200"> | <gallery mode="packed" widths="400" heights="200"> | ||