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Conception
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28 weeks - Brain begins to mature; fetus resembles a sleeping newborn
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Birth
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6 months - begins babbling; can support weight on legs and bounces
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1 Year - begins to walk and tries to imitate language
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18 Months - Can follow one step commands and may become clingy
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2 Years - starts to show defiant behavior and begins to say sentences
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3 Years - can dress and undress themselves and can carry on a conversation
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5 Years - Knows about everyday things like money and food, and can draw a person with 6 or more body parts
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8 Years - Begin to lose baby teeth and enjoy being around their friends
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12 Years - Puberty begins for boys and girls and they enjoy making decisions for themselves
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14 Years - Show more concern about what other people think, moodiness
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16 Years
Show more independence, and show interest to develop more intimate relationships
