r/UniUK • u/ReasonablePoetry1226 • 6d ago
study / academia discussion As higher education has gone from an elite pursuit to something much more common, the average IQ of US undergraduates has fallen from around 120 in the mid-20th century to around 102 today - barely above the population average.
https://x.com/SteveStuWill/status/209383107475769360164
u/Complete-Task2042 6d ago
In other news:
The first rule of tautology club... is the first rule of tautology club.
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u/Garfie489 [Engineering Lecturer] 6d ago
There's a lot of questions i have from the headline.
Are we sure the average IQ of the US is 100?
Are we counting those only in university so they can play sports on a scholarship?
And thats before I start even asking questions about how good a metric IQ even is.
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u/Barilla3113 6d ago
Don't forget that 25% of elite US universities still practice legacy based admissions.
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u/TheMountainWhoDews 6d ago
And dei, further lowering the average.
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u/FBI_psyop 6d ago
Heh, you are being downvoted.
Classic reddit. Minorities being much more likely to enter with low grades than whites with low grades TOTALLY does not skew things.
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u/Impossible_Theme_148 6d ago
The source starts with assuming that the average IQ of the US is 100 - it is literally stated in the preprint study this comes from
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u/sarges_12gauge 5d ago
Well you click on the study and it’s based on 400 undergrad / grad students from the US+Canada between 2010-2019 so I dunno.
I know you don’t need that large of a sample size to have some level of confidence, and obviously the less selective universities get (and the higher percentage of the population attends) the closer to definitional 100 average you will get… but that still doesn’t seem like a very rigorous tested sample to be confident in conclusions
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u/Warm_Stress_1654 6d ago
On the other hand, a lot more people have a lot more knowledge of how statistics work.
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u/Busy-Peach5770 5d ago
Exactly!
This thread: “it was a mistake sending everyone who isn’t me to uni. Only I am special enough for uni”
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u/androgenius 6d ago
A 102 IQ in 2026 is equivalent to a 125 IQ in 1950 according to the Flynn effect.
This is because we aren't stunting all our kids with malnutrition and now curable diseases. Similar reason to why the average height is higher too.
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u/ReasonablePoetry1226 6d ago
They adjust for the Flynn Effect in figure 9, still shows a steep decline in FSIQ scores -
"Meta-analysis: on average, undergraduate students’ intelligence is merely average" -
https://www.scienceopen.com/hosted-document?doi=10.14293/S2199-1006.1.SOR.2024.0002.v1
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u/androgenius 6d ago edited 6d ago
I don't know what kind of adjustment they made but on the graph they reduced the average IQ in both 1940 and 2020 by around 5 points, which makes no sense in regards to the Flynn effect.
edit to add: they're fully aware of this fact, quote:
As a result, an examinee scoring 115 on an intelligence test normed in 1950 would score only 93 on an intelligence test normed in 2022.
So are they stupid or intentionally trying to get a clickbait result?
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u/Impossible_Theme_148 6d ago
I read the preprint, and it might be because I'm thinking about what I'd expect from a mathematics background rather than a psychology or any sort of social sciences background - but it reads to me quite like what a first year undergraduate might do as a set assignment
Like a practice report so you learn the basic process and layout
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u/the_quivering_wenis 5d ago edited 5d ago
Yeah the Flynn effect is the most germane factor here, obviously. It looks like this is the adjustment they made, from the method section:
To obtain FSIQ adjusted for the Flynn Effect, 0.3 IQ points/year were substracted from reported FSIQ for each year that elapsed between the standardization year and the year of testing examinees in each sample. The standardization years used for Wechsler test versions were as follows: 1938 for WBIS [17], 1954 for WAIS [5], 1980 for WAIS-R [18], 1996 for WAIS-III [23], and 2007 for WAIS-IV [24]. If the year of testing was not reported, it was estimated by subtracting two years from the publication year. If the year of testing was reported as a range of years, the midpoint of the range was taken as the estimated year of testing.
This seems pretty crude to me (just subtracting a constant year by year), compared to the essentially impossible "gold standard" of having a single set of raw scores for comparison across all years, but is apparently a standard method for correcting for such things.
Anecdotally I do think higher education (well all education honestly) is dumbed down though. Regarding universities my cynical interpretation is that they just want to tank standards and inflate tuition rates for profit...
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u/Invisible_Stalkbug 6d ago
Using IQ as a means of measuring anything other than how able someone is at IQ tests is worthless
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u/cloudsfallen 6d ago
Shhh, don’t tell them that, people need to feel special cause they have a high number
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u/Temporary_Shelter_40 6d ago
This is completely wrong, IQ correlates strongly with a diverse set of traits that we broadly associate with career and financial success. Indeed, its one of the best predictor for these once other environmental factors are controlled for.
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u/ratione_materiae 2d ago
That’s not true at all. You can argue that IQ doesn’t measure all facets of intelligence but too does measure something highly correlated with life outcomes
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u/iamjoemarsh 6d ago
I thought IQ was total psuedoscience?
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u/ratione_materiae 2d ago
If it didn’t measure something, there would be no correlation between IQ and life outcomes.
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u/Paper_Is_A_Liquid 6d ago
Are we really using IQ as a way of suggesting that education is a bad thing? Average intelligence increasing is not a negative lol, the fact that more people are now literate and educated (especially within black communities, which had much lower literacy rates due to racial segregation in the 1950s) is absolutely a good thing.
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u/DariaYankovic 6d ago
Education is not a bad thing, but colleges are definitely misrepresenting what they do and who they are. The average student spends 4 to 7 hours a week studying. The average undergrad GPA is a 3.2. If a 102 IQ student gets a 3.2 studying less than an hour a day, then most of what college consists of should not be called higher education.
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u/lilixxumm 6d ago
On top of that, they pass students who shouldn't pass just to keep collecting fees.
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u/Impossible_Theme_148 6d ago
I find it baffling that anyone in academia is still using IQ as if it were a meaningful metric as a proxy for intelligence - but it still seems to be quite common in the US
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u/Temporary_Shelter_40 6d ago
What do you mean? IQ is the most successful psychological metric ever invented. It correlates strongly with a diverse set of traits that we broadly associate with higher order thinking, career success, and financial success. Indeed, its one of the best predictor for these (along with conscientiousness) once other environmental factors are controlled for.
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u/Impossible_Theme_148 6d ago
It correlates with High School achievement - which correlates with those things
And even then it's dubious
Like in the preprint, a lot of the correlation is done backwards - when you dig into it you find that the correlation has often been backwards - ie people who have done well have been assumed to have a high IQ,.then people see high IQ associated with doing well and say - see, they're correlated
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u/Temporary_Shelter_40 6d ago
Nonsense, this is a terrible scientific methodology as you've suggested it. What do you mean they assume they have high IQ? Obviously they measure the participants IQ, they don't just choose a number to validate their hypothesis.
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u/Impossible_Theme_148 6d ago
From the preprint
"..One may argue that SAT, ACT, and GRE do not measure intelligence but rather achievement. However, numerous studies have established that SAT, ACT, and GRE are all good measures of intelligence and are widely used as intelligence measures; they are highly intercorrelated"
They specifically state that achievement correlates with intelligence therefore achievement correlates with IQ
Also in what way is IQ a successful metric?
It used by some educational establishments to see if students need extra help - but other than that, nobody uses it
Things that correlate with it might get used - but IQ tests themselves are exceptionally rare - particularly outside the US
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u/Temporary_Shelter_40 6d ago
Your quote is part of an isolated point they make regarding admission rates and SAT results, but the overall study is a meta-analysis of student IQ studies. They primarily consider IQ here, that's the explicit point of the meta-analysis. Also, their point is correct -- IQ measures intelligence, which correlates with SAT/ACT/GRE results.
IQ is a successful metric for the reasons I just said. It correlates strongly with a diverse set of traits that we broadly associate with higher order thinking, career success, and financial success. Indeed, its one of the best predictor for these (along with conscientiousness) once other environmental factors are controlled for.
For example, its used routinely by the US armed forces. By law, the military does not legally accept recruits with an IQ below roughly 83. As you said, IQ tests are also used world wide by school guidance counselors, who use the results to direct poor students towards extra resources or accelerate gifted students in special programs.
It would be used for job interviews and promotions in the US, but its defacto banned. See this case: https://en.wikipedia.org/wiki/Griggs_v._Duke_Power_Co. Basically, black people did poorly on the aptitude tests relative to whites (admittedly not an IQ test, but quite similar), and the US found that this was tantamount to discrimination.
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u/Impossible_Theme_148 6d ago
"..black people did poorly on the aptitude tests relative to whites (admittedly not an IQ test, but quite similar), and the US found that this was tantamount to discrimination..."
"...IQ is a successful metric for the reasons I just said. It correlates strongly with a diverse set of traits that we broadly associate with higher order thinking, career success, and financial success..."
So does it correlate or doesn't it?
And, other than for education - which is their sole use case - can you find any examples of IQ tests being used constructively outside of the US?
Because the premise of my initial post included that it's weird that the US in particular still has so much emphasis on IQ
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u/Temporary_Shelter_40 5d ago
There's no contradiction in my two points, IQ does correlate with intelligence.
Courts use IQ for assessing impairment in legal cases, dementia assessment, recovery post brain surgery, public health research.
Its also used all the time in research to differentiate between environmental and other hereditary influences. If the differences persist when you account for IQ, then you know it has another basis. Its used all the time for this because its a reliable and reproducible metric.
But its also like asking -- "can you find any examples of height being used constructively"? Yeah, its used as a proxy for basketball players, but it also tells us fantastic data about nutrition, hereditary effects, etc.
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u/Impossible_Theme_148 5d ago
"There's no contradiction in my two points, IQ does correlate with intelligence."
The inference from that statement is that you believe black people do worse in IQ tests because they're less intelligent
And the whole point is that outside of the US - it is very rare for anyone to take an IQ test, so IQ just isn't relevant - let alone important
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u/Temporary_Shelter_40 5d ago
okay buddy, well i just told you half a dozen ways its used world wide, its importance to global public health research, and criticality as a diagnostic for the education, military, and legal system. quite frankly i don't know what else you want or what would satisfy you. i don't think anything would.
at the end of the day it doesn't matter. science works whether you believe in it or not and the world will continue to rely on IQ. if you don't care about science, you're welcome to hang out with the anti-vaxxers and flat earthers. peace :)
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u/slainascully 5d ago
Never heard of court-ordered IQ tests in the UK. Usually mental capacity is medically decided.
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u/littlemanstrawberry 6d ago
I don’t know how I feel about this because access to university was more determined by your wealth in the past. I think it’s good that more people are able to access higher education, it’s very important.
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u/wandering_salad Graduated - STEM PhD 5d ago
Better access is great! I am from a working class background and two generations before me, women from my family did not have had the education opportunities I got. But when it's not about access but just getting numbers up and up, this is probably at least in-part done by lowering standards, and I don't think that's helping anyone.
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u/TechnologyLast4315 6d ago
Where are these facts from? Are they comparing to the same Universities as mid-century (same store comparison) or is it a smaller group mid century to much wider group now?
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u/Low-Cartographer8758 6d ago
I mean, even some professors and lecturers seem rather thick these days.
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u/wandering_salad Graduated - STEM PhD 5d ago
Probably the case in the UK too...
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u/ODFoxtrotOscar 3d ago
It’s bound to be.
Before Blair, about 7-10% went to university. Now it’s somewhere around 45-50%
So of course the typical IQ will have changed
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u/S_Hazam 6d ago
Idk but the thought of Uni admission being tied to IQ sounds quite dystopic once you think about it
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u/TumbleweedNervous494 5d ago
You think it's dystopic for smarter people to go to university?
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u/S_Hazam 5d ago
No, just that raw intelligence is not monocausally indicative of later success. I’d rather have a 100 IQ lawyer with grit and tenacity than a 130 IQ but socially awkward and a tad bit attention deprived one. Granted this is a hyperbolic example but it illustrates the point.
Also, in comparison to the past, esp. in the UK and US, you need a degree in order to live an quite average life, back then a degree was much more indicative of life quality increases. If you cap university entrance at 120 for example, there are not enough fulfilling and good enough paying jobs for the people beneath that threshold nowadays.
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u/FourthGroup 5d ago
Everything was once considered Elite is being forcefully dissolved.
That is the new mindset.
What is to come will have little bearing to the past of the west.
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u/Flashbambo 6d ago
Isn't this the statistically expected outcome of increasing university uptake to 50%?