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From the article: "However, a 2018 study of Norway has punctured these theories by showing that IQs are dropping not just across societies but within families.
by inscionent 7y ago
From the article: "However, a 2018 study of Norway has punctured these theories by showing that IQs are dropping not just across societies but within families. In other words, the issue is not that educated Norwegians are increasingly outnumbered by lower-IQ immigrants or the children of less-educated citizens. Even children born to high-IQ parents are slipping down the IQ ladder."
- ardit33 7y agoInteresting, thanks for the explanation
- iq-thrower1 7y agoOne hypothesis which offers an explanation for this is the accumulation of deleterious mutations over generations, caused by a less harsh environment (e.g. medical care, technology) and advanced parental age, then accelerated by cultural changes [1]. [1] https://link.springer.com/article/10.1007/s40806-017-0084-x https://link.springer.com/article/10.1007/s40806-017-0084-x