Study suggests random genetic drift, not intelligence, drove human brain size increase

timesofindia.indiatimes.com

A new study suggests human brain size increase over two million years wasn't driven by selection for intelligence. Researchers analyzed fossil skulls, finding neutral evolution and stasis better explain braincase and face changes than a steady push for bigger brains. This challenges the long-held assumption that larger brains directly correlated with increased survival and intelligence in human evolution.


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Study suggests random genetic drift, not intelligence, drove human brain size increase | News Minimalist