Presumably, if you are taking the GRE you have weathered at least four years of college coursework and think yourself capable of getting into grad school. This is why it was distressing to me when I cracked open my GRE prep book and saw this on the first page:

If a computer mouse eludes you, you have bigger problems than getting into grad school and should be grateful to have passed the third grade, let alone to have recieved a college degree.