During the first three to four months of life all babies are ambidextrous -that is , they use both hands, with no preference for one or the other. By the middle of the first year, however ,definite signs of hand preference appear
During the first three to four months of life all babies are ambidextrous-that is , they use both hands, with no preference for one or the other. By the middle of the first year, however ,definite signs of hand preference appear