I have a student that is very different from the others. She is of average intelligence and is very social with her peers...too social, you might say. All day every day she makes noises. Usually it's animal noises like meowing or "boinging" noises. It's not only distracting, but it has me wondering. Would you say this is normal behavior? She is totally unaware that she is doing it. When I ask her to stop, she gives me a blank smile, stops, then meows a moment later. Hmmm..