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Language Evolution, Symbolic Cognition, Language Acquisition, Brain Development, Origin of the Human Mind | Terrence Deacon | 20

Mind & Matter

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Evolution of Male-Female Size Ratio and Implications for Sexual Competition

In early ancestors, australopithecines, males were two to three times larger than females based on the size of mature bones. In contrast, today's male-female size ratio is only slightly larger for men, with a lot of overlap and definitely not two to one. This shift in size ratio indicates a modification in male-female relationships and sexual competition, leading to more male offspring care and exclusive mating in certain social groups.

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