Like aeh says, some kids with ADHD are not hyper, they are just unfocused or act spacey and have problems staying on task unless they are involved w/ something fascinating. My daughter could spend an hour deeply engrossed in a jigsaw puzzle, and she has been that way since she was a toddler, but if you ask her to write a paragraph, and it's a topic she doesn't want to write about, she gets off task every 30 seconds. I have to bribe her to do things like clean her room and break the task down into small parts. Otherwise it's hopeless.