i always believed in the voice thing iykwim. and being consistent, i dont like seeing a child/baby doing something they shouldn't and the parent slightly telling them off for it then they keep doing and eventually the parent "having" enough and going 'boonta' when it could have been stopped in the beginnning. but i have to remember (and you all can giggle at me),i dont have a child yet so what i believe now will most likely change once i do.