A said mothers across the world speak to their babies in the way. Researchers from the Baby Lab at Princeton University said "motherese" is a language. It is not just noises and coochy-coos. The words and sounds mothers say to babies are complex. They are a form of communication. Mothers use them in the same way across the world. They help the development in babies. Dr Elise Piazza, co-author of the research, said baby talk is more than we thought. She said: "It is not to be embarrassed about at ."
The researchers recorded 24 mothers talking to babies between seven months and one year. The mothers spoke 10 different , including English, Mandarin and Russian. Dr Piazza said: "We brought mothers into the lab and had play with and read to their own babies, just like they would at home." She said mothers changed the of their voices when speaking to , in any language. The study didn't look at fathers' , but Piazza said that it is likely fathers would speak to their babies in a way across the world.
