We all have that voice we put on when we're talking to babies where we get all clucky and make weird faces.
You might not think what you say really goes into their brain, but it actually does, in fact the first 1000 days of a child's life is really important.
Talking Matters is a charity aimed at making sure we commicate with our kids in the first three years of their life.
Talking Matters Community Action Manager Emma Quigan and Talking Matters Coach Ariana Kahui spoke to The AM Show.
Watch the video.