As you already know, there are two hemispheres to the brain, the left and right hemispheres. They are both extremely similar, just like our pairs of eyes, ears, arms, and legs. However, there are differences between the two. With the brain hemispheres theory, it is said that some people are more dominant in one hemisphere than the other while some are "mid-brained", with neither being more dominant. Take this quiz to find out which side of the brain you are more dominant in!