Or suppose that IQ could be boosted by 10 points through smaller class sizes in preschool or healthier diets for babies and children. Does this make a difference?https://twitter.com/RichardDawkins/status/1112032950621659136 …
Behavior genetics shows shared family env't has zero lasting effect on adult IQ, and that includes _every_ source of within-culture env'tl intervention that you mentioned. Surprising, but apparently true.
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Geoffrey, could you provide some references on this to me? Thanks in advance.
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The book 'intelligence' by
@StuartJRitchie is a good overview.
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Aside from nutrition.
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what about things like sleep, exercise, family's diet?
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Hypothetically: take identical twins. One grows up eating a balanced diet, regular exercise, top class education, etc. - the other eats fast food daily, no exercise at all, never went to school and got an education, used drugs frequently, etc. - there would be no IQ difference?
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The diet and exercise might make a small difference. Education will make none whatsoever.
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