[Lauren]

I do Developmental Psychology, including Language!

I find it really hard to explain things...so I'm sorry!! For example, when we were cave people... we didn't have a language, we just spoke in grunts etc. Eventually that developed into a language. Child language is the same, except they have the added extra of child-directed language which uses tone, pitch and volume. If you speak in a higher volume then a child automatically feels a serotonin (happy chemical!) boost.

Also; a baby can recognise it's mothers voice from the womb. It automatically makes them feel safe and through process of social learning they learn what each noise/sound means. So they know that when their parent holds a spoon out and talks to the baby it means food time... eventually by about age 4 toddlers have "theory of mind" which means they actually understand other things... before then the child doesn't realise that other people have other thoughts or views.

Sorry about my terrible explanation, I'd never make a teacher!!!