Between birth and seven months of age, the average baby born into a two-parent household hears nearly three times as much babbling, cooing and sing-song questions-and-answers from a woman -- generally the mother -- than from a man, new research shows.
via L.A. Times - Science http://ift.tt/10jIY3D
via L.A. Times - Science http://ift.tt/10jIY3D
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