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Here is about the best I could do to show the dramatic decrease in teen pregnancy rates:
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Oh, and we are also more educated than at any time in the history of the country(you may have to click on it to see the whole graph, blogger does poor at image formatting):
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Then of course there is the Flynn Effect. Apart from being less violent, and more educated we have the higher IQ scores to go along. That works out to about 3 IQ points a decade. So on average children will have a 6-12 point IQ than their parents once they get to their mid teenage years when IQ points reach their adult levels.
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