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Milestones

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Approximate age
Motor milestone
Cognitive/social milestone
3 months   Holds head up, moro reflex disappers   Social smile  
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4-5 months   Rolls front to back, sits when propped   recognizes people  
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7-9 months   Sits alone, crawls   Stranger anxiety, peak-a-boo  
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Upgoing babinski   12-14 months    
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15 months   Walks   few words, separation anxiety  
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12-24 months   Climbs stairs, stacks 3 blocks, oben doors   Object permanence, 200 words, 2 word sentences at age 2  
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18-24 months   Stacks 6 blocks   Rapproachment, kick a ball  
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24-36 months   stacks 6-9 blocks   core gender identity  
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30-36 months   Stacks 9 blocks,   Toilet training  
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3 years   rides tricycle, copies line and circle   900 words and complete sentences  
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4 years   Simple drawings (stick figures), hops on 1 foot, copies cross   Cooperative play, imaginary friends, grooms self, brushes teeth, buttons and zips  
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6-11 years   Rides bicycle, copies triangle   Reads, understands death, development of conscience (super ego) same-sex firends, identification with same sex parent  
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11-13 years     Abstract reasoning, formal operations, formation of personality  
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Tanner stage 1   Childhood    
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Tanner stage 2   Pubic hair begins to develop (adrenarche), increase size of testes, breast tissue elevation    
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Tanner stage 3   Increase pubic hair, darkens, becomes curly, increase in penis size/length    
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Tanner stage 4   Increase penis width, darker scrotalskin, development of glans, raised areole    
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Tanner Stage 5   Adult; areolae are no longer raised    
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Parallel play   24-48 months    
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Cooperative play   4 years    
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Lots of words   18 months    
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Birth-3 months   Rooting reflex   Orients to voice  
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Created by: ddecampo
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