This is an email from the doctor that is helping with the testing: How many participants is important for a definitive study, but you could do it as a single case study. The age range obviously has to be high enough that the child can read, but otherwise I would say the age range should fit the kids you can get to participate. When your ready, I need to get you some practice on reading the results on the machine, try to get you comfortable with neurology and connections between the care and the brain.