An aquaintance of mine recently mentioned that she did this with her ds who is 5 (things like "I must not bite other children" x 10).
I had never thought of writing lines outside of a school disciplinary context and for some reason it really jarred with me. I can see that it is not exactly calculated to instil a life long love of learning, but I felt it was wrong on a level beyond that without actually knowing why. On the otherhand, it is non-violent and does reinforce the messagee.
So I ask, aibu to think that this is not a good thing to do and if not, why not?