Well, we can easily measure the differences in average height due to having an objective physical difference to see.The Flynn effect doesn't prove that general intelligence is crap. There are reasonable and interesting explanations for it. One, for example, is that human nutrition has improved substantially in the countries that have experienced it. Just as peoples' height has grown substantially in a lot of countries as a result of rising living standards, so has general intelligence.
However, IQ tests have changed substantially over the years as far as my understanding goes; to the point that its likely the one I did years ago wouldn't be the one I would be given now. How do we rule out that having an effect? Follow on question: say I take an IQ test at the age of 80, and for the most part my brain functionality hasn't changed or degraded significantly. Will IQ tests, taking into account the changes necessary to 'accurately measure average intelligence' , still note my score as above average (really fascinating it did that as I am thick as heck in general, but certain aspects relating to the test really appealed to my interests as I had then - particularly the reading, which until the year I took it I immensely struggled with), or will mine being reduced - seemingly suggesting my, well, general intelligence has somehow decreased? How can we be sure newer tests aren't biased in some regard as well?
Has that potential effect ever been measured or discussed?
As well as that, one of the studies done recently in Kenya, in 2003, mentioned in that page, that parental literacy and family structure were likely hypothesis as to why these children had higher IQ scores. So are these children more 'intelligent', or better educated?
There are thoughtful and reasonable scholars trying to understand these phenomena. Try for example, looking up an academic review article about the state of intelligence research--like any academic subfield, there are many differing but reasonable evidence-based views.
That's not to say it can't also be true that political actors use this research to advance an agenda.
Apologies, I am quite poor at finding studies and doing that type of research - I only knew about the Shaun video from discovering his channel for other reasons. Could you point out these academic reviews and articles about the state of the intelligence fields, as you are so much more familiar with them than me?
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