I'm at my wits end...my 5 year old, who has always been well behaved and mild mannered is turning into a nightmare because he just won't LISTEN! He asks questions, but doesn't listen to the answer and keeps asking the same question even though we've already answered him - several times. When ask him to stop doing something, he doesn't stop, even though we've asked several times. It seems he doesn't actually react to us until we're in scream mode. We've had his hearing checked - he's fine. And besides, he can hear us whispering the words "Toys R Us" from the other side of the house. So I really think his hearing is selective. We've tried everything - positive reinforcement, negative reinforcement, good cop, bad cop, pleading, begging, scolding, threatening, reasoning He just doesn't seem to get it. He says he does, but it just keeps happening. What do we do? Please help!