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  At 4 months the infant turns from stomach to side
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  Infant turns from stomach to back.
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  Infant turns from back to stomach.
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  Infant can sit.
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  They develop the fear of strangers around 8 months
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  Also at around 8 months they they might cry or be upset if their mothers leave them or the people who they tend to be around the most.
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  Infant can crawl.
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  By the time infants are crawling they will avoid crawling into what they think is a cliff or drop off.
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  Infant can kneel.
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  Infant can stand.
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  Infant can now walk.
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  They start learning to coordinate sensation and perception wiht motor activity.
 Development of object permanence
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  This is where they develop one-dimensional thinking.
 Displays of egocentrism, artificialism, and animism.
 Begin to use words and symbols (language) to represent objects.
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  Age 5 to 7 children begin to value themselves on their appearances and performance in school.
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  Signs of adult thinking begin to develop about specific objects but not abstract ideas.
 Also a reduce of egocentrism.
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  For most girls, the growth spurt usually begins at about the age of 10 or 11.
 Age 8-11
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  Base their judgments on the consequences of behavior
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  Boys tend to begin the spurt 2 years later than the girls.
 Age 10-14.
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  This is the first menstruation for the female.
 The beginning of womanhood. Occurs between ages 11 and 14
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  Self Esteem seems to reach a low point at about age 12 or 13 and increases again during adolescence.
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  They are capable of abstract thinking. Also they are able to deal with hypothetical situations, strategize, and plan ahead to solve problems.
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  From age 9 to 15 the older the children were, the less time they spent with their families.
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  Peer pressure hits around the age of 15 then sort of decreases after the age of 17
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  20-40
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  This is where they start thinking they might want a change and switch things up.
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  spans from 40-65
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  40-45. Their perspectives may change in a major way.
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  45-65. This is where they may be depressed or sad. How life is going may not be how they want to be.
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  At ages about 40 or 50 men's testosterone levels begin to decline.
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  Occurs in late 40s or early 50s. This marks the time that the woman is becoming less fertile.
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  age 65.
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  65-70. This is where they no longer have to work.