[Source: Science Daily]

Young babies make many squeals, vowel-like sounds, growls, and short word-like sounds such as “ba” or “aga.” Those precursors to speech or “protophones” are later replaced with early words and, eventually, whole phrases and sentences. While some infants are naturally more “talkative” than others, a new study reported in iScience on May 31 confirms that there are differences between males and females in the number of those sounds.

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