This is old news, but I've been reading the research/literature on this lately and it's bringing me back to the days when I almost switched careers to go into comparative neurocognition/linguistics. "Babies Cry With an Accent, Study Finds" abcnews.go.com/Health/MindM...

Babies Cry With an Accent, Study Finds

A study comparing sound waves of newborn cries shows that newborns already cry with the accent of their native language.