He has discovered he can make an ear splitting high pitched shriek when he's fed up or frustrated. If he needs help to do somehting I help him but am trying to act as if the noise hasn't happened. Am I right or should I be telling him off for making the noise? It's bloody painful but I think if I make a big fuss he might think it gets attention and do it all the more. Maybe yet again "it's jsut a phase"