AudioMommy, thanks for your input. My understanding is that a full hearing evaluation is performed by an audiologist. Is that what you mean? He has never had an ear infection or hearing problem detected when examined by his pediatricians, and I specifically asked his latest one to check the middle ear area. I've had pediatricians check his hearing since he was an infant due to my concerns. He does seem to frequently be congested especially at night and says he has trouble breathing, and I've often wondered if there's a connection there.

My specific concerns are auditory discrimination in the presence of competing background noise and oversensitivity. You mention using an SLP. I thought an audiologist was the one responsible for treatment of those types of issues.