starting around 6 months babies also show an influence of the ambient language in their babbling, i.e., babies’ babbling sounds different depending on which languages they hear. for example, french learning 9-10 month-olds have been found to produce a bigger proportion of prevoiced stops (which exist in french but not english) in their babbling than english learning infants of the same age. this phenomenon of babbling being influenced by the language being acquired has been called babbling drift.