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"Communicates primarily by crying and fussing at this stage". "Reacts to loud noises by blinking, moving, stopping a movement, shifting eyes about, or exhibiting a startle response".
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"Babbles by repeating the same syllable in a series: ba, ba, ba". "Imitates some nonspeech sounds such as coughing, tongue clicking and lip smacking".
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"Laughs out loud. Coos, using single vowel sounds(e.g., ah, eh, uh)". "Babbles or coos when spoke to or smiled at".
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"Utters three-and-four word statements. Refers to self as "me" or sometimes "I" rather than by name".
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"Talks about the actions of others: Daddy's mowing the grass". "Uses prepositions on, in and under correctly for the most part". "Tells a familiar story while looking at pictures in a book".
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"Carries adultlike conversations; asks may questions". "Engages in storytelling; likes to write short stories and tell imaginative tales". "Uses language to criticize and compliment others; repeats slang and curse words".
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"Finds humor in using illogical metaphors (plays on words) in jokes and riddles". "Understands and uses language as a system for communicating with others".
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"Responds by looking for the source of the voice when their name is called". "Says "da-da" and "ma-ma"