Leaded fuel reduced IQ of children born before 1990

Re:Leaded fuel reduced IQ of children born before 1990 by johanneskanybal on Wednesday October 20, 2021 @12:13PM (#28932467)

You probably meant it as a joke (it was ok) but since half the comments are not:

"The change in IQ scores has been approximately three IQ points per decade. One major implications of this trend is that an average individual alive today would have an IQ of 130 by the standards of 1910, placing them higher than 98% of the population at that time."

https://ourworldindata.org/intelligence

Personally few things triggers me as older generations bashing younger, everything since ww2 has been easier the older you where and they where the ones raising that younger generation. Bit of typical not-getting-it.

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Re:Leaded fuel reduced IQ of children born before 1990 by spangry on Wednesday October 20, 2021 @06:52PM (#28937872)

There's some evidence, at least in first-world countries, that more recently the Flynn effect is stagnating and even reversing (i.e. average IQs are declining). See: https://en.wikipedia.org/wiki/Flynn_effect#Possible_end_of_p...

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Re:Leaded fuel reduced IQ of children born before 1990 by q1w2 on Wednesday October 20, 2021 @02:34PM (#28934316)

I wonder if this has anything to do with the correlative studies that showed that higher IQ individuals have less children on average.

https://en.wikipedia.org/wiki/Fertility_and_intelligence

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Re:Leaded fuel reduced IQ of children born before 1990 by pedrosorio on Wednesday October 20, 2021 @03:26PM (#28935025)

higher IQ individuals having less children should lead to a decrease of average IQ, whereas the parent cites a reported 3 point increase per decade

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Re:Leaded fuel reduced IQ of children born before 1990 by BatFastard on Wednesday October 20, 2021 @04:17PM (#28935854)

As much as IQ tests want to say they test raw intelligence, education plays a major role in how well you score. And we are better educated as a society than we were 100 years ago.

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Re:Leaded fuel reduced IQ of children born before 1990 by jVinc on Wednesday October 20, 2021 @05:19PM (#28936795)

When looking at IQ increase over time, you control for education and socioeconomic factors, otherwise you're just drawing conclusions from those factors.

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Re:Leaded fuel reduced IQ of children born before 1990 by philosopher1234 on Wednesday October 20, 2021 @07:31PM (#28938233)

How can you control for education when education itself has changed?

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Re:Leaded fuel reduced IQ of children born before 1990 by beamatronic on Wednesday October 20, 2021 @01:00PM (#28933074)

If the world is the most peaceful it's ever been, and people are the smartest they've ever been, what does that mean for land and housing prices in a fiat economy?

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