‘Baby talk: babies prefer listening to their own kind’, http://www.mcgill.ca/newsroom/channels/news/baby-talk-babies-prefer-listening-their-own-kind-250280, McGill University (12 MAY 2015).
6-month-old infants appear to be much more interested in listening to other babies than they are in listening to adults. It is an important finding because the researchers believe that an attraction to infant speech sounds may help to kick start and support the crucial processes involved in learning how to talk. (…) As adults, we use language to communicate. But when a young infant starts to make speech sounds, it often has more to do with exploring than with communicating. (…) They need, quite literally, to ‘find their own voice’.