Intelligent Mouse: By “relevant for society” i meant relevant for economics. IQ can matter for many reasons, like for example just being interested in any form of scientific rigor in understand behavior could make it relevant to an individual as the person would seek for all (or at least most) alternatives in models.
But lets investigate some of the potencial usage of intelligence meassurments and see how IQ tests meassure up.
Measuring potential school performance:
Some small amount of years in school will already give the teachers or parents ample information about their prospects, but also traits that make IQ more productive in synthesis:
Well, IQ correlates around 0.3 with job performance, but the measurement is subjective so it might capture some things that correlate with social-class and therefore IQ.
Pleitropy and polygenic structures makes eugenics by swapping SNPs impractical. Breeding programs can only do so much without further molecular biology knowledge. Twin studies seem kinda ridiculous:
Twin Studies, Adoption Studies, and Fallacious Reasoning
And i also agree with:
Behavior Genetics and the Fallacy of Nature vs Nurture
and (which is what GWAS interested behavioral geneticists like Steven Hsu agree on):
Height and IQ Genes
making eugenics very hard. If we already knew the mechanisms behind
Testing mental health:
This is actually the best use of IQ, as decreasing IQ is indicative of loss in brain stuff.
Criterion validity and correlation:
I also think that IQ´s criterion validity lies on shaky grounds when its founded on correlations that are only tested in narrow environments, essentially just creating the same correlation again and again without testing the methodological validity by testing the correlation appropriately. to test correlation appropriately would find anomalies in the pure environmentalist approach (or any level of conviction to environmental explanations) or finding causal IQ relationships (which Environmentalists have done).
I’m not really an IQ denier though, i think there probably is an range of IQ that any given person can inhabit, but the fact of individuals sticking around the mean makes it hard to know who could be where, especially in such large and genetically similar groups like economic classes and races. Some people are obviously extreme, but as previously stated, we don’t need IQ tests to know that.
And whats to say that smart people have high IQ? IQ is contingent on G, but all of my criticisms on IQ are pretty much equally (for better or worse) valid against G.
I see no use in IQ if not for future developments. Its an unfinished project at best.
I do not think that people realize what they are criticizing when they attack IQ. For IQ is simply the best measure we have for measuring intelligence in human beings. No better test has ever been devised. So when you criticize IQ as a concept, you are actually criticizing human intelligence itself. Do you IQ critics who say IQ is not that important really want to say that human intelligence is not important for human beings? Because that is exactly what you are saying.
You realize IQ correlates very well with all sorts of things, right?
Percentage of country that are college grads. % of college grads rises with rising IQ.
Grades in college, SAT. Good correlation between college grades, SAT scores and IQ.
Wealth of society. As IQ rises, societies tend to become more wealthy. As IQ falls to a low level, you can end up with extreme poverty, a lot of crime and chaos, rampant disease, and sometimes even a failed state.
State of the infrastructure of society. Infrastructure of society improves as IQ rises. People and society are more likely to maintain things. When IQ falls to a low level, people often do not know how to fix broken infrastructure and there is a tendency to jerry rig or do temporary quick and dirty fixes to problems that last for a bit but then fail again.
Civilizational level of society. As IQ rises, societies appear more civilized. As it drops to a low level, countries can appear downright barbarous.
Crime rate of society: As IQ rises, the nation’s crime rate falls.
Whether or not you will go to jail or prison and how long: As IQ falls, you are more likely to be imprisoned and for longer.
Whether you will go on welfare programs. As IQ falls, welfare use increases.
Whether you will get an advanced degree. As IQ rises, advanced degrees become more common.
Income (up to a certain level). Income rises in tandem with IQ up to 125-130, after which it falls
Accident rate. As IQ falls, people get into many more accidents, some fatal. Includes car crashes, recreational accidents, accidents at home, etc.
Hospitalization rates. As IQ rises, people are hospitalized less often.
Rates of alcoholism and serious drug abuse. As IQ rises, rates of drug and alcohol abuse fall.
The environment you create for your children. As IQ rises, parents create better environments for their children.
Stability for chaotic nature of your surroundings. Even if you look at it on a neighborhood level, as IQ rises, the neighborhood becomes calmer, sometimes nearly to the point of being boring. Yet only three miles away, a large group of apartment complexes housing many low wage workers has a lot of noise, a general chaotic atmosphere, frequent police calls, a lot of yelling and screaming coming from homes, more frequent and more chaotic parties, more violence, more residential crime, and more drug and alcohol abuse.
Domestic violence rates. Domestic violence falls precipitously as IQ rises. Men at the highest IQ levels seldom beat their wives. As IQ falls down to a low level, domestic violence becomes commonplace to the point where most men are beating their wives.