It is normal to be right handed. And have you ever read psychological case histories, they always start out something like subject 23, a right handed male 32 years of age, bla bla bla. Why do they mention handedness when it has nothing to do with what was studied.
SW-User
@Subsumedpat it's because they're trying to eliminate all the potential confounding factors they can, and left-handed people have different brains.