A study said mothers across the speak to babies in the way. Researchers from Princeton University said "motherese" is a world . The cute and coochy-coos mothers say to babies are very . They are a form of . Motherese helps babies develop language. A researcher said baby talk is more than we thought. She said: "It is not something to be about at all."
The researchers recorded 24 mothers. They spoke 10 different languages. Their were between seven and one year. The researchers said they recorded playing with and reading to their babies, just like they do at . Mothers change the of their when they speak to their babies, in language. The study didn't look at fathers' , but fathers speak to their babies in a similar way across the world.