Not read this yet but makes sense. Similar to why highly intelligent people demonstrate greater variability (in ability) across different aspects of intelligence than folks with lower intellectual ability who tend to show more uniformity.
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There is increasingly restricted range as intellectual ability decreases.
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Any correlation between sibling order and intelligence differential?
Thanks. Twitter will use this to make your timeline better. UndoUndo
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This goes counter to the notion that parenting matters little in the end and outcomes depend mostly on inherited IQ and other heritable traits.
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No it doesn't, because it doesn't explain how the differences between twins come to be despite both of them getting the same environment and amount of high education. IQ is still consistently the single greatest predictor of life outcomes.
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