I was reluctant to put my son on any medication for his ADHD. In fact, I resisted the ADHD diagnosis altogether. "Couldn't it be just that he's a kinetic learner?" I asked the doctor hopefully. He stopped writing the prescription, put down his pen and said patiently, "Ms. Gray, you and your husband have ADHD and ADD respectively. You told me that your mother had ADHD and your stepson had it when he was younger. The chances of your son not having ADHD are much smaller than the chance that he...