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Story summary
- Oxford and Reading scientists reported modern humans favor the right hand.
- A meta-analysis of over 2,000 individuals from 41 primate species found little bias except in humans.
- Fossil modeling showed a modest right bias in Australopithecus afarensis, a stronger bias in later Homo, and a Neanderthal bias second only to modern humans, supporting the authors' two-stage evolution hypothesis that bipedalism freed the hands and brain growth later cemented right-hand dominance.
