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This stage from shortly after birth to around 3 months is where an infant learns signal responses. Crying, the signal, results in comfort, the stimulus response. (Owens, Metz, & Farinella, 2015)
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At this stage, usually 3 to 4 months into development, rituals, diaper changing or feeding, have emerge along with games, "peekaboo" (Owens, Metz, & Farinella, 2015).
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This stage is where intentional gestures start to emerge and are used to influence the other person (Owens, Metz, & Farinella, 2015).
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Around 12 months is the first time a simple word is used along with gestures.
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This is when infants start to combine words to form primitive word combination of 3-4 words (Owens, Metz, & Farinella, 2015).
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Fueled by a larger lexicon, more complex sentences are formed for recalling events for children at this stage in preschool life (Owens, Metz, & Farinella, 2015)
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By this time children can tell short simple stories about events in the past, but they perform "reformulation" of words to fit the speaker they are with (Owens, Metz, & Farinella, 2015).
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By this time, 90% of the child's language is formed.
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By this time, children start to form their independent identities apart from family and they can start telling more adult-like, complex stories of events (Owens, Metz, & Farinella, 2015).
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By this time, language development is almost complete, but still growing larger due to the use of figurative language. Competent use of language aspects are used, but they may not be cognitively understood by the speaker (Owens, Metz, & Farinella, 2015).