Thanks for that answer MD, so how do I go about getting his auditory processing tested? Via GP? He has had his hearing tested a few times (non recent though) and its been clear. But he does has a trouble with speech - hears something and then says it quite differently (though often but not always, along the gist of things). Is there any treatment/therapy they can give them?

But I guess part of it is general development, things like thinking he knows better etc And us saying stop or no. He seems to register and then a second later carries on...