Which ear do you use when talking on your cell phone? If you’re a left-brain thinker, chances are you use your right hand to hold your cell phone up to your right ear, according to a study from Henry Ford Hospital in Detroit. There appears to be a strong correlation between brain dominance and the ear used to listen to a cell phone, with more than 70 percent of participants holding their cell phone up to the ear on the same side as their dominant hand. According to the theory of left-brain or right-brain dominance, each side of the brain controls different types of thinking, and people often prefer one type of thinking over the other. Someone who is left-brain dominant is more logical, analytical and objective, while someone who is right-brain dominant is more intuitive, thoughtful and subjective. Left-brain dominant people are more likely to use their right hand for writing and other everyday tasks. And interestingly, most left-brain dominant people also place the phone on their right ear, despite there being no perceived difference in their hearing in the left or right ear.