Language Acquisitions is the unconscious process by which humans develop language without instruction.
Noam Chomsky was first to argue that first language acquisition in human infants proceeds the way it does because we are cognitively predisposed to acquire language.This process of figuring out a grammatical rule and applying it generally is called overgeneralization.
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Universal Grammar means the set of grammatical rules and principles common to all languages.we have just discussed the notion that humans do not learn language simply by imitation; children produce words and phrases that they have never heard before. Clues of universal grammar are the overgeneralizing rules explained before, the fact that children don't learn by imitation or through correction.
Carly multiword
Babbling
Age 4 to 8 months Patterns: Babies in the babbling stage tend to produce the same consonants no matter what language they are exposed to: /p.b.t.m.d.n.k.g.s.h.w.j/
One-word
Two-word
Late multiword