Comment Comment by foobar2020 > Poles and Italian immigrants in the US raised their average IQ scores over the 1st half of the 20th century -- by over 15 points!So did everyone else: https://en.wikipedia.org/wiki/Flynn_effect3 points per decade = 15 points per 50 years. So this shows that immigration to the US had no impact on the IQ of this group.Whole developed world has very similar IQ levels to United States, except for China, Japan, Korea which have higher average levels: https://iq-research.info/en/average-iq-by-country parent foobar2020 8 years ago
So did everyone else: https://en.wikipedia.org/wiki/Flynn_effect
3 points per decade = 15 points per 50 years. So this shows that immigration to the US had no impact on the IQ of this group.
Whole developed world has very similar IQ levels to United States, except for China, Japan, Korea which have higher average levels: https://iq-research.info/en/average-iq-by-country