According to CNN, most right-handed people use the left hemisphere of their brains to process language, but that doesn’t mean most lefties are right-brained. About 98% of right-handers are left-brained, and about 70% of left-handers, only about 30% are right-brained or bilateral-brained (in which both halves are equally capable)
Left-handedness is about twice as common in twins than in the general population. A 1996 Belgian study found that about 21% of twins, both fraternal and identical, are left-handed.
