The average american skull has grown a third of an inch between 1825 and 1985 (when the study ended), mostly in height but also in width. This doesn't indicate a change in intelligence.
It's thought that the change in the food supply has caused that change. Others propose the rise of technology has caused an increase in the importance of intellect in breeding opportunity.
IIN I noticed that the human head size is shrinking?
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The average american skull has grown a third of an inch between 1825 and 1985 (when the study ended), mostly in height but also in width. This doesn't indicate a change in intelligence.
It's thought that the change in the food supply has caused that change. Others propose the rise of technology has caused an increase in the importance of intellect in breeding opportunity.
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Hateful1
5 years ago
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Also the average height has increased since WW2.
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Nickvey
5 years ago
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same genes improved nutrition pushes the extreems to the maximum . between age 55 and 60 i grew 4 inches taller. changed my diet.
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Hateful1
5 years ago
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Well during the war many countries faced malnutrition, causing the average height to decrease.
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Nickvey
5 years ago
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didnt change the genetic potential of the species
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Hateful1
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nope just saying the statistics changed.