Why Did Humans Evolve to Favor One Hand Over the Other?
New research explores why humans predominantly favor one hand, a trait unique to Homo sapiens. The study found that factors like cranial volume and limb proportions contribute to this handedness. As humans evolved to walk upright, their larger brains facilitated more efficient use of their hands for tasks like tool use and communication.
- ▪About 90 percent of people are right-handed, a phenomenon not observed in other primates.
- ▪The research compared data from humans and over 40 primate species to understand handedness.
- ▪The study suggests that walking upright and larger brains are key factors in the evolution of human handedness.
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