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3 Months
Response vocally. Gurgles, coos,babbles. Babies response and begin to anticipate games such as "peekaboo". -
8 Months
Begins using body language to communicate. Infants start to show communication behaviors such as interacting, attracting attention, engaging in eye contact with love ones. -
12 Months
First relevant word spoken. The infant begins to use words to communicate decreasing the amount of body language used. -
18 Months
Begins to combine words, and has a vocabulary of around 50 words. The toddler can now ask for his mother though she is not present. -
2 Years old
Vocabulary is about 150-300 words, the child now uses two word combinations such as "eat cookies" this represents working memory. -
4 Years Old
Uses most speech sounds correctly with a vocabulary of 900- 1500 words. This age group is learning relational words and phrases, categories of relational words, under temporal terms , quantitative terms, familial terms, and conjunctions. -
5 Years old
Child produces speech sounds correctly. Adult like language form is used, and the child is still acquiring pragmatic skills needed to be effective communicators. -
Adolescent language
Development is now at a slow pace and begins to stabilize. Semantic and pragmatic development flourish. -
Early and middle adulthood
Mature articulation. Increase comprehension occurs in this stage. -
Advance age
Language rate slows. Comprehension may decrease as well as decrease communication with peers.