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</ref> with a low variability (i.e. with more stability and consistency) of pitch.<ref>[https://www.sciencedirect.com/science/article/abs/pii/S0003347200915239?via%3Dihub Men's voices and women's choices]</ref> | </ref> with a low variability (i.e. with more stability and consistency) of pitch.<ref>[https://www.sciencedirect.com/science/article/abs/pii/S0003347200915239?via%3Dihub Men's voices and women's choices]</ref> | ||
Males with voices and [[females]] preferring males with such | Males with voices and [[females]] preferring males with such voices may have evolved due to the higher chance of intimidating predators and rival tribes with impressive shouts, whereas males without this trait were less intimidating and thus less likely to scare off rival tribes or predators, and thus had lower [[reproductive success]]. | ||
A deep voice is caused by thick vocal cords, as well as being larger in size (generally, the larger the animal, the lower the pitch) and having a wider ribcage which is related to a wider frame and strength which are all masculine traits. | A deep voice is caused by thick vocal cords, as well as being larger in size (generally, the larger the animal, the lower the pitch) and having a wider ribcage which is related to a wider frame and strength which are all masculine traits. |