Study suggests vocal exploration in babies is important for speech development

In the first large-scale observation with human coding of infant vocalizations using all-day home recordings, babies of all ages from birth up to a year old squealed and growled in significant cluster patterns, suggesting the babies may have been actively engaged in noise-making play and sound practice, according to a study published May 29 in the open-access journal PLOS ONE by Hyunjoo Yoo from the University of Alabama, Pumpki Lei Su from the University of Texas at Dallas, and colleagues.

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