Six-month-old Jane McCullough "signs" right along with her grandparents. Jane McCullough, a 6-month-old baby, has watched her parents and grandparents, who are both deaf, communicate using American ...

Just a few years ago baby sign language seemed like a novelty, something reserved for precocious toddlers. Think "Meet the Fockers," the movie that had Robert De Niro intensely signing with his genius ...