'Baby talk' vital part of evolution, says research

SYDNEY, Australia - Researchers have unlocked the reason why adults use "baby talk", when addressing infants, according to a new study published on Wednesday.

Western Sydney University revealed that mothers unconsciously raise the pitch of their voices as an evolutionary trait in order to comfort their babies and make themselves appear friendlier.

It also helps babies learn language, as the sounds are clearer and easier to disseminate.