My 12 year old has ADHD and I was wondering if anyone can recommend books they have liked in helping me to understand him better and get ideas on how to help him with executive functioning skills etc. When his medication wears out he can be very obnoxious and bother us on purpose and his younger sibling, even if you ask him to stop he doesn't and it's very frustrating that sometimes I end up screaming and I later regret it. I've tried going to a different room and walking away from the situation, but at times he does follow And imposes his presence. It's also hard when at bedtime when I'm cuddling with younger sibling and him and I tell them time is up and good night. He just doesn't want to leave and won't go to his bed.