Right or left-brained?

Right and left handed people aren't necessarily right or left brained. There's a tendency- but its not absolute. Sometimes a left handed person will have the sides switched- so language is controlled primarily by the right half of the brain and nonverbal skills (like spatial reasoning and interpreting facial expressions) might be controlled by the left- the opposite of most right-handed people. But this is not always the case. You might actually be ambidexterousi which is why your grandmother's attempt to make you switch worked. Ambidexterous people are even harder to predict when it comes to hemisphere function. You'll see more learning disabilities and other neurological issues- statistically. But you're obviously having no problems with learning! Take a nuropsych or neurology class when you get a chance. It's fascinating.