I have been reading 'How to Talk so Children Will Listen' etc, and have been really impressed with most of it.
I am really stuck on their idea that you shouldn't say (i.e. to a child who is painting) 'Great!' and instead say 'You're using so many colours' or something instead. Their idea is that descriptive praise will mean more to the child and that if you say 'good' you can cancel it out too easily by saying 'bad'. Whereas if you say 'That's very neat' or 'You did that so carefully' they will store these things up.
The thing is, it takes so much longer to say these things! And my brain can't keep up, especially when juggling a 3 and a 1 year old. Is it so bad to say 'well done' and 'good'?!