Left Brain verses Right Brained

I have a hard time distinguishing between a left brain horse and a right brain. In mine my, I think about half of the horses are going to be left brained and the other right brain. Its not a great paradigm to get stuck in because it limits your ability to identify what your horse is and what you need to do. If doing the seven game, with a left brained horse you will need to get bigger, and with you a right brained horse you need to get smaller. A left brained horse is usually friendly, willful, and mischievous, compared to a right brained that will be more bracy, tense, shy or timid.