Early human dads stayed at home while females roamed

July 09, 2011

Males within two human ancestral species that existed roughly 2.7 to 1.7 million years ago were stay-at-home fellows, while females of these same species traveled. […]

The fact that early human ancestral males did not travel, however, does not mean that they helped to raise children. Chimpanzees, which exhibit the same dispersal patterns, have males that stay at home but yet don't participate in childcare. […]

If one interprets our results as indicating that male australopiths rarely moved long distances, then one is left to wonder if the need for energetic efficiency was sufficient to drive the origins of bipedalism…

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