I think this has proven to be false. Fathers descend to "baby talk" when the child is learning and slowly bring them up to par instead of trying to just force

I think this has proven to be false. Fathers descend to "baby talk" when the child is learning and slowly bring them up to par instead of trying to just force perfect talk from the start. They do this instinctively. There's some great comments on this from salman khan, I think. He recorded the first years of his kid's life at home and documented this phenomenon