Talking gaga to baba - a big no no

World — Scientists have confirmed that babies  as young as six months can understand a wide vocabulary,  and if parents speak to them normally,  not goo goo gaga,  it could improve their language abilities later on in their life. 
Psychologists at the University of Pennsylvania,  suggests that babies can understand words months before they can say them,  and they start to grasp the meaning of words at approximately a year old.
The study co-author,  Professor Daniel Swingley said:  "Talk to babies,  and they are going to understand a bit of what you are saying.  And the more they know,  the more they can build on it."
This could explain why babies have a wide vocabulary by the age of two.