Mothers across the speak to babies in the way. Researchers said "motherese" is a language. The noises and coochy-coos mothers say are very . Motherese helps learn . Baby talk is more than we thought. A said baby talk is not .
The recorded 24 mothers speaking 10 . The mothers played with and read to their . Their babies were between seven and one year. The mothers' changed in the way, in any . The study said fathers also speak to their babies in a way.