Although children do not generally speak until they are two or three, the stamp of language is present in the very first noises they make. Baby’s cries may sound similar the world over to the untrained ear, but careful study has shown that they actually take on the melody of their native language. During the last few months of gestation, it seems that babies hear the sounds of speech from the world outside the womb, and learn to mimic it. Hence when they are born, German babies cry in falling tone typical of the tonal speech patterns of that country, while French babies bawl on an upward curving note.

[Rita Carter, Mapping the Mind, Phoenix (Orion Books), 2010, s. 247, za: B. Mampe, A.D. Frederici, A. Christophe & A. Wermke, Newborn’s cry melody is shaped by their native language, „Current Biology” 19 (2009)]