I am writing this letter to let you know that being a teenager is not a mental disorder. Neither is being a toddler. I am sorry your child is at a frustrating age, but that is what she is doing right now, and I cannot stop it.
Also, if your child is mentally retarded, certain behaviors are going to go along with that- it is the nature of their condition, and no amount of behavior specialists can "fix" who your child is and make him someone else. So stop trying to "fix" him and starting loving him instead. You will be surprised what he is capable of if you do.
your friendly neighborhood therapist