tclancyHarold and George Destroy the World
The effects of Idiocracy are much worse than we appreciate. I believe it's hidden in part by technology (as a cognitive crutch) and part by top skilled immigration (people previously suppressed in their undeveloped countries). And education is much, much worse almost everywhere by leaning more to memorization and catering to the lowest common denominator. Student A is bad at math and good at language, student B is the opposite, both get the worst education for both subjects.
I think we haven't felt yet the true consequences of this. Worldwide.
Idiocracy really seems to appeal to eugenicists. Is “stupid people breed too much” really an issue we think is worth propagating?
There can be also a softer version of it, which is that cultural richness and focus on education are easily transmitted within families. A society that doesn't value culture and education is going to produce less educated families with even less educated children.
It’s also true that IQ is both real and highly heritable. The military uses what’s essentially an IQ test to screen out the bottom 15% or so of the population: https://www.psychologytoday.com/us/blog/after-service/201801.... The military has found that people with aptitude test scores below the cutoff can’t be trained to competently perform any job in the military.
IQ is also highly heritable: https://pmc.ncbi.nlm.nih.gov/articles/PMC5985927.
It isn't that, but it is one of the strongest predictors of success in the US military.
Sure, but what has that got to do with “IQ is also highly heritable?” which, in this context, suggests intelligence is something innate and biological, rather than recognizing an IQ test as a gauge skewed by culture and socioeconomic status.
Well, that was a different reference in GP's post. You can go read it. Heritability is definitely a thing, but far from the only thing and it isn't simple Mendelian inheritance - there are many components to intelligence that reflect differently in gene transfer and so while you can see a correlation in specific individuals and their immediate ancestors there are lots of exceptions and its probably a mirage - if seen at all - in any large demographic. See my other comment on the problems with eugenics in this thread.
Attacking IQ test is like vaccine denialism. People don’t like the fact that requiring individuals to cooperate can enhance health outcomes for the group as a whole. Similarly, people don’t like the idea that some individuals are just born smarter than other individuals.
> People don’t like the fact that requiring individuals to cooperate can enhance health outcomes for the group as a whole.
I am not certain where you are deriving this claim from.
> Similarly, people don’t like the idea that some individuals are just born smarter than other individuals.
Nor this claim, as well.
I have had many discussions on the topic of IQ, and I have never once seen anybody ever argue that there is no variance in human intelligence. There is a large range of variance in every human attribute. That is not the focus of the debate. Rather, most of the debate seems to be surrounding the construct validity of IQ. Statistical validity != construct validity.
There's no debate on construct validity of IQ among the experts in the field. The consensus position is that IQ tests measure something real, that the tests enjoy extremely high measurement invariance (which implies construct validity), and that the results have extremely high predictive validity (relative to literally anything else in the entire field of psychology). The current debate is more along the lines, whether the contribution of genes to variance in IQ is closer to 30% or to 80%.
IQ correlates most strongly with socioeconomic class, with members of the same ethnic group scoring higher over the decades as that ethnic group as a whole becomes wealthier.
Exactly the opposite is true. Adoption studies have been used to isolate the effect of SES itself, and the contribution of that factor is low: https://www.sciencedirect.com/science/article/abs/pii/S01602... (“Proportion of variance in IQ attributable to environmentally mediated effects of parental IQs was estimated at .01… Heritability was estimated to be 0.42.”).
This is just SIBS data. It has all the standard "Minnesota" limitations: the study is tiny, the cohort isn't demographically representative, adoption isn't itself random, nothing deconfounds the prenatal environment, and the children in the cohort are also adopted at different ages.
It's one thing to call out an interesting paper; it's another to act as if the matter has been settled simply by pointing to SIBS.