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Period: to
First Year
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Language - Sounds
The babies begin to laugh or coo. -
Language - Repetition
The babies are able to produce repeat syllables or bables like "da, da" or "ba, ba". -
Language - Non-verbal
The babies begin to learn ways to do non-verbal moves for the sayings of "yes" and "no" by nodding or shaking their heads. -
Language - Talking
By 12 months most babies are able to begin saying "hi", "bye", "mama" and "dada".