This document outlines the stages of language development from infancy through age 6. It discusses how language is acquired through mimicry and how infants begin to comprehend and vocalize. Toddlers start producing "jargon" and following simple directions. By age 2, children use 50-300 words and ask questions. Between 3-4 years, children use complex sentences and refer to non-present people and objects. By age 5, vocabulary expands to 1,500 words and children can retell stories. Six-year-olds can identify right from left, talk extensively, and carry on adult conversations.