Thank you for the reply. I had a read through your post too. There is some great information that you have provided. I had no idea what to call the physical aspect of his stuttering, just knowing that it is called blocking is great. Once he started blocking, that is what got us concerned. His sister stuttered when she was little but it was only ever what you would expect from a kid. We were never worried or thought much about it and she grew out of it, we thought the same would happen with our son. I am not sure if he is aware or not. He still powers the words out most of the time and keeps talking. He isn't shy about it. Sometimes I think he notices when he is trying to talk to his sisters and he gets frustrated with them but I don't know if he gets frustrated with is sisters or his stutter. I have sent an email with a video of him to the lady who is involved with the Lidcombe Project here in New Zealand and hope to hear back soon. If not, we will keep trying more locally. There seems to be a real lack of specialists here. ​ Thanks for the reply and good luck with your son too.