Research at the University of Texas suggests that the key to discovering how languages develop lies in understanding babies' first basic developments in the acquisition of language.
Allegedly, there are four common speech patterns amongst babies, and these are the ones produced with the most ease. They are usually sounds involving the movement of the jaw up and down. These speech patterns include sounds such as "ma-ma" and "ga-ga", which are universally characteristic of baby sounds.
Professor J Locke, an expert in Linguistics and Infant Language at the University of Cambridge, stated there is a possibility that human babies have always used these sounds and thus they have become included in languages as they have developed.