Scientists think humans developed right-handedness thanks to these 2 factors

Since the dawn of man, right-handedness has reigned supreme without much intel as to why. While our ape brethren also develop strong preferences toward one hand over another, there is generally an equal number of left- and right-handed individuals. Conversely, 90% of humans are right-handed. And now, scientists think they have discovered when this prevalence developed.

Scientists think humans developed right-handedness thanks to these 2 factors. Since the dawn of man, right-handedness has reigned supreme without much intel as to why. While our ape brethren also develop strong preferences toward one hand over another, there is generally an equal number of left- and right-handed individuals. Conversely, 90% of humans are right-handed. And now, scientists think they have discovered when this prevalence developed. A new study led by researchers at the University of Oxford suggests that it went hand-in-hand (pardon the pun) with two other major evolutionary shifts: walking on two legs and developing much larger brains. Thousands of primates helped narrow the possibilities. The research, published in PLOS Biology, analyzed data from 2,025 monkeys and apes representing 41 different primate species. All the evo...