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a 1 month old can react to their parent's voice
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coos and babbles
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Makes eye contact
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makes sounds such as "ooh" and "aah"
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Babbles
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lifts head and chest when on stomach
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Can tell a smile from a frown
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laugh, squeals, babbles
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Gurgles
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Studies objects carefully
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Voices excitement and displeasure
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enjoys other children
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Uses speech to get attention
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notices small objects
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crawls around to look for parents
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Says "mama" and "dada"
