My child, 4 in October,gets really really angry if he says something and I misinterpret what he is said or say pardon if I have not heard it. He gets frustrated and will scratch, hit and shout. Does anyone have any ideas on what I can do to help him deal with his frustration or find an alternative way of expressing his anger. His speech is fairly normal. My hearing is not abnormal but I am a little hard of hearing. I am addressing this.