Yes, sounds just like our son - same age of 8.5 years old. Speaking loud is his style, whether he is physically far from a listener, or just an inch away. I believe it is his will to want to be heard and taken seriously at all times. He gets in trouble at school sometimes, in afterschool, when all are to work quietly and he is not the quiet one. As to sleep, it is a whole different chapter in our home. In his view, he does not need much sleep. He quotes famous and accomplished people like Napoleon or Thatcher who slept for 3-4 hours a night and he feels it should apply to him, too (at his age :)). He always has too much to learn to go to sleep even at midnight. I will not even mention the books, IPads, flashlights I find in his bed in the morning. Yet, how can I complain about his thirst for knowledge? Good luck and I wish you lots of patience. They grow and change (thankfully) and give us different challenges then.