Can his hearing really need testing?
DS is 4 and a half, and going through a few tests to find the cause of his lack of focus/concentration, inability to sit still, inability to follow instructions etc.
We've done our own (obviously very scientifically accurate as you can tell by the thread title) hearing tests, does he really need a proper one?
The only reason I question it, is because it's a pain to get him in to be seen and he hates these sorts of things.