Rinstinkt’s Reviews > The Intelligence Paradox: Why the Intelligent Choice Isn't Always the Smart One > Status Update
Rinstinkt
is 78% done
Genes determine about 80% of the variance in adult [general] intelligence. On average, more intelligent parents beget more intelligent children. And the genes that influence general intelligence are thought to be located on the X chromosomes. ... It means that boys inherit their general intelligence from their mothers only, while girls inherit their general intelligence from both their mothers and their fathers.
— Dec 01, 2022 10:35AM
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Rinstinkt’s Previous Updates
Rinstinkt
is 78% done
There is strong evidence to suggest that the Lynn-Flynn Effect was only a 20th-century phenomenon. It appears to have ended at the end of the 20th century in the most advanced industrial nations. Studies suggest that the average level of intelligence has begun to decline at the beginning of the 21st century in such advanced industrial nations as Australia, Denmark, Norway, and the United Kingdom.
— Dec 01, 2022 10:39AM
Rinstinkt
is 78% done
the Lynn-Flynn effect, during the 20th century ... secular rise in IQ due to better infant and child nutrition and health. ... This effect is already halted in advanced industrial nations.
— Dec 01, 2022 10:38AM
Rinstinkt
is 78% done
So women influence the general intelligence of future generations very strongly, through their sons and through their paternal granddaughters. If more intelligent women have fewer children and are more likely to remain childless, then one potential consequence is that the average level of general intelligence in society may decline over time.
— Dec 01, 2022 10:36AM
Rinstinkt
is 77% done
Among both men and women, number of siblings significantly increases the number of children. Since the number of siblings (plus one) is the same as the number of children that their parents had, this means that fertility—the total number of children individuals have—is highly heritable. The more children your parents have had (and hence the more siblings you have), the more children you have yourself.
— Dec 01, 2022 10:20AM
Rinstinkt
is 77% done
... the only reason is that more intelligent men are not married to more intelligent women, and vice versa.
— Dec 01, 2022 10:02AM
Rinstinkt
is 76% done
Another possibility is that women find intelligent men more attractive as mates. The evolutionary psychologist Geoffrey F. Miller has consistently argued that women preferentially select men with higher levels of intelligence to mate with.
[My note: Lack of more intelligent men for these intelligent women, who as a consequence can't fulfil their hypergamy in regards to intelligence]
— Dec 01, 2022 09:58AM
[My note: Lack of more intelligent men for these intelligent women, who as a consequence can't fulfil their hypergamy in regards to intelligence]
Rinstinkt
is 76% done
[Is a demanding career a factor? ] But this is not the case. Only childhood intelligence, not educational achievement or earnings, decreases the number of children women have. Contrary to popular belief, more educated women and women with more demanding careers do not have fewer children and are not more likely to remain childless.
— Dec 01, 2022 09:56AM
Rinstinkt
is 76% done
It is not clear to me why more intelligent men, who wanted fewer children than less intelligent men at the start of their reproductive careers, do not actually have fewer children. This is in sharp contrast to more intelligent women who wanted fewer children and in fact do have fewer children than less intelligent women.
— Dec 01, 2022 09:55AM
Rinstinkt
is 76% done
Among women, childhood general intelligence significantly decreases the number of children they have had in their lifetimes. Among men, it does not. While the effect of childhood general intelligence on women's fertility is consistent with the prediction of the Intelligence Paradox, the lack of the same effect among men is inconsistent with it.
— Dec 01, 2022 09:53AM
Rinstinkt
is 75% done
Less intelligent individuals are significantly more likely to want to become parents, and more intelligent individuals are significantly more likely to want to remain voluntarily childless.
— Dec 01, 2022 09:52AM
