I apologize to my readers for recycling so much old material, but certain crucial issues must be resolved before we can move forward knowledgeably.
In this post, I summarize all I have learned to date about how much high SAT performers regress to the mean when faced with official IQ tests and what this implies about the SAT’s correlation with said tests. Some of the data may contradict previous posts, as new information has come to light, causing me to revise old numbers.
Study I: New SAT vs the Raven
A study by Meredith C. Frey and Douglas K. Detterman found a 0.48 correlation between the re-centered SAT and the Raven Progressive Matrices in a sample of 104 university undergrads, but after correcting for range restriction, they estimate the correlation to be 0.72 in a less restricted sample of college students. I don’t buy it, but I’m not interested in how well the re-centred SAT would correlate with the Raven among college students, but among ALL American young adults. (including the majority who never took the SAT).
Using the Frey and Detterman data, I decided to look at the Raven scores of those who scored 1400-1600 on the re-centred SAT, because 1500 on the new SAT (reading + math) corresponds to an IQ of 143 (U.S. white norms), which is 46 points above the U.S. mean of 97. Now if the new SAT correlated 0.72 or higher among ALL American adults, we’d expect their Raven scores to only regress to no less than 72% as far above the U.S. mean, so 0.72(46) + 97 = IQ 130.
I personally looked at the scatter plot carefully and did my best to write down the RAPM IQs of every single participant with an SAT score from 1400-1600. This was an admittedly subjective and imprecise exercise given how small the graph is, but I counted 38 top SAT performers and these were their approximate RAPM IQs: 95, 102, 105, 108, 108, 110, 110, 113, 113, 113, 113, 113, 117, 117, 117, 117, 117, 120, 120, 120, 122, 122, 128, 128, 128, 128, 134, 134, 134, 134, 134, 134, 134, 134, 134, 134, 134, 134
The median IQ is 120, and it does not need to be converted to white norms because the Raven was normed in lily white Iowa circa 1993, but as commenter Tenn noted, I should have perhaps corrected for the Flynn effect since the norms were ten years old at the time of the study. Correcting for the Flynn effect reduces the median to 118 (U.S. white norms) which is 21 points above the U.S. mean of 97.
For people who are 46 IQ points above the U.S. mean on the new SAT to regress to only 21 points above the U.S. mean, suggests the new SAT correlates 21/46 = 0.46 with the Raven in the general U.S. population.
Study II: New SAT vs the abbreviated WAIS-R
Harvard is the most prestigious university in the World with an average SAT score in the stratosphere, thus it’s interesting to ask how Harvard students perform on an official IQ test. The best data on the subject was obtained by Harvard scholar Shelley H Carson and her colleagues who had an abbreviated version of the WAIS-R given to 86 “Harvard undergraduates (33 men, 53 women), with a mean age of 20.7 years (SD 3.3)… All were recruited from sign-up sheets posted on campus. Participants were paid an hourly rate…The mean IQ of the sample was 128.1 points (SD 10.3), with a range of 97 to 148 points.”
It should be noted however that the WAIS-R was published in 1981, and that the norms were collected from 1976 to 1980. Carson’s study was published in 2003, so presumably the test norms were 25 years old.
James Flynn cites data showing that from WAIS-R norms (circa 1978) to WAIS-IV norms (circa 2006) the vocabulary and spatial construction subtest (used in the abbreviated WAIS-R) increased by 0.53 SD and 0.33 SD respectively. These gains would result in the composite score of the abbreviated WAIS-R becoming obsolete at a rate of 0.26 IQ points per year, meaning the Harvard students’ scores circa 2003 were 6.5 points too high. This reduces the mean IQ of the sample to 121.6 (U.S. norms) which is about 120 (U.S. white norms); 23 points above the U.S. mean of 97 (white norms).
However Harvard’s median re-centered SATs of 1490 equate to IQ 143 (U.S. white norms) which is 46 points above the U.S. mean of 97. Assuming the sampled Harvard students were cognitively representative of Harvard and assuming Harvard is cognitively representative of all 1490 SAT Americans, the fact they regressed from being 46 IQ points above average on the SAT to 23 IQ points above average on the abbreviated WAIS-R, suggests the re-centered SAT correlates 23/46 = 0.5 with the abbreviated WAIS-R.
Study III: Old SAT vs the full original WAIS
Perhaps the single best study was referred to me by a commenter named Andrew. In this study, data was taken from the older more difficult SAT, and participants took the full-original WAIS. In this study, six samples of seniors from the extremely prestigious Dartmouth (the 12th most selective university in America) averaged 1357 on the SAT just before 1974. Based on my latest research, an SAT score of 1357 circa 1974 would have equated to an IQ of 144 (U.S. norms); 143 (U.S. white norms). Because this is much higher than previously thought; the degree of regression is quite devastating.
Assuming these students are typical of high SAT Americans, it is interesting to ask how much they regress to the mean on various subtests of the WAIS.
Averaging all six samples together, and then adjusting for the yearly Flynn effect from the 1950s through the 1970s (see page 240 of Are We Getting Smarter?) since the WAIS was normed circa 1953.5 but the students were tested circa 1971.5, then converting subtest scaled scores to IQ equivalents, in both U.S. norms and U.S. white norms (the 1953.5 norming of the WAIS included only whites), we get the following:
| iq equivalent (u.s. norms) | iq equivalent (u.s. white norms) | estimated correlation with sat in the general u.s. population inferred from regression to the mean from SAT IQ 44 points above U.S. mean. | |
| sat score | 144 | 143 | 44/44 = 1.0 |
| wais information | 128.29 | 127.2 | 28.29/44 = 0.64 |
| wais comprehension | 122.22 | 120.9 | 22.22/44 = 0.51 |
| wais arithmetic | 120.37 | 119 | 20.37/44 = 0.46 |
| wais similarities | 119.16 | 117.75 | 19.16/44 = 0.44 |
| wais digit span | 117.37 | 115.9 | 17.37/44 = 0.39 |
| wais vocabulary | 125.93 | 124.75 | 25.93/44 = 0.59 |
| wais picture completion | 105.87 | 104 | 5.87/44 = 0.13 |
| wais block design | 121.82 | 120.5 | 21.82/44 = 0.50 |
| wais picture arrangement | 108.33 | 106.55 | 8.33/44 = 0.19 |
| wais object assembly | 113.65 | 112.05 | 13.65/44 = 0.31 |
| wais verbal scale | 126 | 125 | 26/44 = 0.59 |
| wais performance scale | 116 | 114 | 16/44 = 0.36 |
| wais full-scale | 123 | 122 | 23/44 = 0.52 |
Conclusion
In three different studies (New SAT vs Raven, New SAT vs abbreviated WAIS-R, Old SAT vs WAIS), people averaging exceptionally high SAT scores averaged only 46%, 50%, or 52%, respectively, as far above the U.S. mean on the official IQ tests as they did on the SAT, suggesting the SAT (old or new), only correlates about 0.5 with official IQ tests. Correlations in the range of 0.5 are about all you’d expect most educational measures (school grades, years of school) to correlate with IQ, but it’s a surprisingly low correlation given that some consider the SAT to be more than a mere education measure, but an IQ test itself. So either the SAT is NOT equivalent to an IQ test, or it’s only equivalent to an IQ test among people with similar educational backgrounds, or my method of inferring correlations from the degree of regression is giving misleading results (perhaps because Spearman’s Law of Diminishing Returns is flattening the regression slope at high levels or because of ceiling bumping on the tests involved).
The potentially low correlation between the SAT (and presumably other college admission tests like the GRE, LSAT, etc) with official IQ has some positive implications. It means that to whatever extent IQ and success are correlated in America, the correlation is a natural consequence of smart people adapting to their environment, and not the artificial self-fulfilling prophecy of a man-made testocracy.
It also suggests that there’s no substitute for a real IQ test given by a real psychologist with blocks, cartoon pictures, jig-saw puzzles, and open-ended questions. I can see David Wechsler, chuckling from the grave, saying “I told you so.”
Pumpkin Person 
Such an 80s song. Fun. Happy. Joyous.
And not in a tacky filthy way like modern magic negro dominated pop music.
This is what ‘Make America Great Again Means’.
We can bring it back !!
BACK IN TIMMHHMME!!!!!
George Bush’s favourite band.
BTTF has such a good soundtrack. I lose it at 2.10.
Wrong link! Referring to ZZ Top.
But according to Patrick Bateman, Huey Lewis is too black-sounding for him!
Well he liked Phil Collins…
Get a delete/edit post functionality….just load a new template for the blog that has one. Or go theme forest and buy a custom one.
I’ve always felt the Math SAT was basically a great IQ test for those who had at least taken high school algebra, but the Verbal SAT (at least post-analogies) was too easy to study for.
SAT prepping is also a multimillionaire dollar business to say the least, as with many forms of other credential study courses. This only happens in America, the same reason why our sociopathic elites want more black people to commit crime, because it’s profitable for them since the prison industrial complex and police state are a multi-billionaire dollar business. America is a sick place, but it’s very fascinating to observe when people will do anything for $$$.
At the end of the day, all of this is futile and even IQ is useless, given America’s rigged system of meritocracy, granted to a certain group of Whites and a lot of Jews.
“SAT prepping is also a multimillionaire dollar business to say the least,”
This. I see a ton of businesses saying they can raise SAT scores, but as far as I know, these tutors only raise test scores by 10 to 20 points. Aka nothing. Making money off of suckers.
Whites are actually the most adaptable in America. You may not believe it, because there are many White trash in Middle America and the southern United States.
Ashkenazi aren’t all that versatile as a people, they thrive simply because of legacy and in-group tribalism. Most of them would be sickly poor if society took away all the parasitic industries and they are left to their own devices.
Have you ever seen the show I Shouldn’t Be Alive? How “adaptable” is Man without civilization and a societal structure and he must survive on his own? He turns into a scared little bitch. Adaptable my ass. People don’t know what to do, people barely survive in the wilderness, so how “adaptable” is Man?
Whites are a lot more adaptable than Jews in most environments. Jews can’t even live among their blacks subjects “so to speak”. Just look at Africa with the Boers. native blacks also live in Africa perfectly fine w/o Whites.
Half right. If we turned the economy into just a functional input-process-output autist machine like China, yeah, Jews would do a lot less well. But still quite well.
Where they would do really badly is in very unregulated, uncivilised environments with opposition cronyists and schizo tribes like MENA nations and Africa. You can’t brainwash those guys and convince them to watch movies where white/indian/latino guys make love to their women. Just not happening.
Israel is on life support with foreign aid of billion$ — and that tells you alone how successful Jews are, when they’re on their own.
Yes, whites did very well as african settlers in Africa for a long period. They also did well among amerindians and natives in the New World.
Whites have a goldilocks thing with above average IQ and medium-above average testosterone.
What beats that is High IQ (Jew) and High Test (Black) tag team combo.
Its not like Jews didn’t see the potential in MLK. They could have never got civil rights for themselves otherwise.
Whites have the best work ethic. East Asians are rote laborers, but Whites create stuff.
And PP thinks what separates Jews from Goys is that God’s Chosen manipulate others who only get to manipulate inanimate objects, which is true, given the fact that Israelis cannot even grow their own food and need other people from farming traditions to help them, either that or Jews are just damn lazy or view manual work beneath them.
The jews can manipulate objects too. There is a great deal of physicists, chemists and comp scientists that are of Jewish extraction. But on average, whites do better here or are more drawn to it due to the asperger tendency.
Jews never had a centralised state to weed out their more law breaking, anti-communal and fraudulent sons and daughters.Without it you don’t get K autist sexual selection.
East Asia is a parody of it.
“Whites have a goldilocks thing with above average IQ and medium-above average testosterone.
What beats that is High IQ (Jew) and High Test (Black) tag team combo.”
Lol I’m stealing this. This is a good one.
either the SAT is NOT equivalent to an IQ test, or it’s only equivalent to an IQ test among people with similar educational backgrounds, or my method of inferring correlations from the degree of regression is giving misleading results
———–
https://pumpkinperson.com/2016/09/29/an-analysis-of-the-flynn-effect/
The real lesson of the Flynn effect is that the Raven Progressive Matrices is NOT a culture reduced test. If culture reduced testing is to continue in the future, we’ll need tests that don’t require hypothetical abstractions, and are also fun and engaging enough to not require persistent motivation.
———–
I absorbed allot of cultural knowledge growing up. I think even though I got 113 on the wais 4, my total cultural knowledge is a better measure of IQ than the wais 4 because wais 4 being a cultural knowledge test does not measure total cultural knowledge of a person. Poverty does not limit IQ but only the type of culture you accumulate. I remember I was in the free meals program in school. I still got a score of 1471.
If Stephen Hawkings IQ was based on block design he would score the equivalent of a cabbage.
https://en.wikipedia.org/wiki/Stephen_Hawking
You know its nearly the end of 2016 and things we never thought possible happened:
1. Donald Trump is President Elect
2. Britain has voted to leave the EU.
3. The Mass Media is polling at 6%-27% credibility depending on the pollster.
4. Zion’s Drang Nach Osten has been checked in Syria by the Duke of Muscovy.
5. Hilary Clinton, Renzi, Hollande and Cameron’s careers are over. Osborne, Merkel and Obama’s are hanging by fingernails.
6. Leicester won the Prem @ 5000/1.
7. Wikileaks exposed a satanic paedophile ring around Podesta.
8. Wikileaks exposed ISIS as funded by Saud.
9. SJW ‘liberalism’ seems to be checked.
10. Rise of the Alt Right and HBD
11. Backlash against Magical Negro e.g. NFL ratings, police solidarity
12. Alt right bloggers like Cernovich sell more books than most MSM journalists.
13. Mel Gibson is on track for an Oscar!!!!! (Good old Mel)
14. Tax havens exposed like never before – now the footballers involved.
On the other hand:
1. Zion is making a death push to change the West’s demographics with mass migrations.
2. The CIA/Mossad deep state faction is fighting the last gentile patriots in the intelligence services of FBI, army, NSA and so on (this is the most interesting story of 2016, stay tuned,and best of luck to those fighting in the corridors of Rome).
3. Hollywood has gone balls deep Zionist and banned young gentile straight male whites from blockbuster movies.
4. The mass media has become openly and explicitly globalist and shows open hatred for the alpha white men that put their jew heads into lockers in school.
5, Mass Media/The Jew reacts by promoting black men to women.
6. More than 6 wars being fought by America in Afghanistan, Syria, Iraq, Yemen, Somalia and Libya.
7. Testosterone levels of white males has never been lower.
8. The illegal immigrant population never higher.
9. All artistic awards have lost worth due to PC Diversity.
10. Our culture has never been so tawdry and low IQ thanks to Magic Negro/Jew tag team.
11. Inequality of income/wealth at record highs since pre Great Depression.
12. Heroin and pharma drug addictions through the roof.
13. Zion is banning white men from the Ivies.
Its been an unforgettable year.
My expectation is that Zion will contest the Brexit decision extra-legally if necessary. Further electoral revolt in Europe elsewhere and gamma conniving to suppress problems to the Bolshevik gentile collectivism and farming project…and then open street violence as patriots recognise Zion is pulling the strings and as mass migrations continue.
I also expect the MSM relevance to decline even more and SJW to become a loaded topic. I expect the Zionist authorities will move to censor the internet piecemeal.
But I expect Trump to change the culture of America as Obama had. I expect testosterone levels of whites will increase as the bro anti feminist PC war goes on. I expect racism to make a comeback. I expect a massive infrastructure bill which will boost real living standards. An end to Russian confrontation from Zion openly over being butthurt over Syria.
We’ve weathered the worst of the storm. Simply sitting still and seeing Zion’s final death charge was bad. Now were charging towards it.
http://www.swarthmore.edu/sites/default/files/styles/main_page_image_floating/public/assets/images/classics/martin.jpg?itok=lDehoJdt
Classics Professor (high v, low Q)
Chem Eng Prof (high Q, low v)
I’d put money on the classics guy knowing about HBD. And money on the chem eng making more money in the private sector.
One is selected more for social survival and adaptation.
The other for producing surplus for Master in a pre-ordered system.
Lifetime Sexual Partner count is reciprocal as well.
The classics guy is a meaner guy. The eng guy a nice guy patsy.
I look a lot more like the classics guy because I have a somewhat barbell profile myself.
AESTHETICS DONT LIE
Also note the classics guy is Jewish.
And the eng guy is gentile.
That’s the way the world works.
The 2nd guy could be a Jew. Not all Jews fit the Classics Professor and certain Classics Professors could pass as the STEM professor.
Academics are another parasitic class.
When a society collapses and ushers a new beginning, as we will see in many Western nations, the parasites will be of no use as always, but they are rendered completely immobile.
The French Canadian government understands that the Anglo Prole and the Jew work in tandem, sort of like the Jew and the black working together in America. Québec has a healthy does of anti-semitism and they are in the process of purging all the Anglos who want to turn the province into an ugly-matrix money machine that one finds in the entire Anglo-Judaic Prole Sphere.
Not one place that is Anglo and Jewish resembles anything as grand as this, and it’s only a concert:
In truth Zion allies with whatever group is amenable and needed. In the Middle East itself, its alliance with the House of Saud is also notable.
Yes I must visit quebec someday. You make it sound like the last bastion of Europe in America Del Norte.
Benjamin Graham was salutatorian of the class of 1914 and, weeks before graduation, was offered teaching positions in three different faculties: Greek and Latin philosophy, English, and mathematics. He was all of 20 years old. Needing to support his siblings and widowed mother, he went to work on Wall Street. In 1934, he wrote Security Analysis, the first book ever to put the study of investments on a systematically logical footing. In 1949, he published The Intelligent Investor, which Warren Buffett has called “the best book about investing ever written.” That text, in which Graham discusses the intellectual framework and emotional discipline required for investing success, has sold over 1 million copies and has helped hundreds of thousands of regular people reach their financial goals with safety and reliability. Graham is universally acknowledged as the father of modern security analysis (if his rigorous methods had been consistently followed, the 1990s would not be remembered as a financial disaster). Among Graham’s students at the Business School was a young man from Omaha, Warren Buffett, who has said that he was struck by the force of Graham’s teachings “like Paul on the road to Damascus.” Graham also wrote extensively about monetary policy, earning praise from John Maynard Keynes; held several U.S. patents, including one on an improved slide rule that anticipated many elements of the pocket calculator; wrote an original Broadway play, True to the Marines, that may have inspired the classic movie Born Yesterday; and translated a Uruguayan novel, Mario Benedetti’s The Truce, into English. One of Graham’s favorite hobbies was translating Homer into Latin and Virgil into Greek; you can take the boy out of Columbia, but you can’t take Columbia out of the boy.
Graham was probably one of the most intelligent people of all time. He used it to make money though. 500k as an analyst in the 1920s was a ridiculous sum. Something like 50m a year today…as an analyst. He ran the first hedge fund. Unlike Buffet, he was neuro balanced. So no chance his wife would die from oral cancer from blowing guys behind his back like Buffet.
The subject of calculating inflation is fascinating. Most methods comprise a ‘representative basket’ or index.
But….
The basket changes the higher your income. Veblen goods are more important.
As Marc Faber is fond of saying amongst all his rantings – asset price inflation is inflation too.
We can see property, art and jewellery prices have skyrocketed faster than potatoes and coca cola.
To gauge purchasing power one must use Piketty’s approach looking at Jane Austen novels rentier income in relation to quantities of luxury goods.
Ergo, a simple rule is to multiply a PE bosses carry in the 1980s X10 to get the same requisite veblen position he could get back then.
Likewise I tend to multiply by 100 for the early C20th. You could easily do a PhD on the topic.
The intuition is not to look at a candy bar index, but art sale auction inflation.
You have a logarithmic function going on, not a linear or even geometric curve.
This also does not preclude the possibility a multi-billionaire does not achieve unit efficiencies on bulk purchases however, or tax subsidies on certain items/assets.
Ben would have figured out a slide rule!
In the first study it seems odd that so many scores are 134 but not any higher on the raven. Perhaps this is the test ceiling, in which case the iq scores have been surppressed?
In the first study it seems odd that so many scores are 134 but not any higher on the raven. Perhaps this is the test ceiling, in which case the iq scores have been surppressed?
Possibly but the median score is way below 134, and the fact that high scores are suppressed does not affect the medium
peepee conveniently neglects to mention that F&D found the SAT and ASVAB were almost perfectly correlated and that the ASVAB is an “official” IQ test.
peepee is a black lady.
ASVAB is a scholastic test like the SAT
notice peepee also uses the SAT to establish her IQ income correlation then says the SAT is not an IQ test.
black women are not known for their consistency.
At the time i thought it was close enough. Now i have to wonder
This Will Be Of Use To You.
https://randomcriticalanalysis.wordpress.com/2015/06/18/on-sat-act-iq-and-other-psychometric-test-correlations/
https://randomcriticalanalysis.wordpress.com/2015/11/25/no-the-sat-doesnt-just-measure-income/
that was generous of me.
MR correlation with FSIQ for ZA sample only .46.
peepee is very unusual in being both black and autistic.
Table 2.
Pearson correlation coefficients between Wechsler intelligence tests and college board tests
Author N Population IQ test VIQ PIQ FSIQ
Collins (2000) 65 College students WAIS-III
ACT (Composite) 0.75 – 0.75
ACT (English) – – –
ACT (Mathematics) – – –
Carvajal et al. (1989)
30
College students
WAIS-R
ACT (Composite) 0.76 0.62 0.87
ACT (English) 0.56 0.55 0.7
ACT (Mathematics) 0.65 0.65 0.81
Lewis and Johnson (1985)
35
College students
WAIS-R
ACT (Composite) 0.85 0.56 0.77
ACT (English) 0.73 0.51 0.67
ACT (Mathematics) 0.62 0.41 0.56
Lewis and Johnson (1985)
39
College students
WAIS
ACT (Composite) 0.58 0.45 0.56
ACT (English) 0.46 0.32 0.43
ACT (Mathematics) 0.37 0.35 0.37
Steinberg, Segel, and Levine (1967)
84
College students
WAIS
ACT (Composite) 0.71 – 0.75
ACT (English) 0.65 – 0.73
ACT (Mathematics) 0.61 – 0.72
Bailey et al. (1979)
45
College students
WAIS
SAT (Verbal) .73a – –
SAT (Quantitative) .39a – –
why are these all ACTs? if anything the ACT should be much less correlated with the WAIS, because the ACT is much less general. that is it tests specific knowledge of punctuation, grammar, and science in addition to the more general math and reading. it has no vocab or analogies section iirc.
so one sees above that composite ACT generally correlates with WIAS-III FSIQ as i said it would.
1. all aptitude tests are achievement tests and vice versa.
2. ACT, SAT, LSAT, etc. correlate as well with “official” IQ tests as these tests correlate with one another…thus from a purely psychometric pov they are indistinguishable from “official” IQ tests…they are IQ tests.
http://www.sciencedirect.com/science/article/pii/S0887617703000921
notice that one of the five studies on wechsler FSIQ vs composite ACT has the correlation at .56.
the others have it at .75, .87, .77, .75.
I don’t doubt college admission tests correlate highly with the Wechsler among students at the same college, the question is whether it correlates in a representative sample of ALL American young adults.
Some tests have a narrower application than others. College admission tests may be valid IQ tests for people with academic backgrounds, but not for Americans in general. The Wechsler is valid for Americans in general, but not for foreigners. And culture reduced tests claim to be valid IQ tests for all of the above.
Current high school senior here. The answer is not very. I go to a high-income, 60% white public high school in a wealthy suburb. Many of my peers score 1400+ on the new sat which would translate to an IQ of 125+ if the correlation is 1. The difference is due to the fact that the SAT (especially the post January 2016 SAT) is more and more an achievement test. Students at my school invest a considerable amount of time studying for the SAT through classes, books, websites, and even phone apps and it is very effective.Making the SAT an achievement test was the worst thing that could happen from an egalitarian perspective because it only magnifies differences between low-income and high-income students but the political incorrectness of using an IQ test for college admissions is insurmountable.
Personally, I got an SAT of 1560 which correlates fairly well in terms of percentile to my WISC-IV of 140 (tested in 7th grade). I couldn’t have been bothered to study and only took it once. If all high school seniors took it only once and did not study, as long as the scores were re-centered the correlation to IQ would rise considerably.
For people who are 46 IQ points above the U.S. mean on the new SAT to regress to only 21 points above the U.S. mean, suggests the new SAT correlates 21/46 = 0.46 with the Raven in the general U.S. population.
no it does NOT you retarded cunt!
do you even know how to correct for restriction of range?
you don’t. F&H do.
but they’re wrong and you’re right.
right peepee-tard?
You’re not too bright are you. I don’t need to correct my regression slope for range restriction because it’s based on how high SAT people score relative to the general population, not relative to their elite school population. Estimating their degree of standardized regression within the elite sample itself would require knowing the means & SDs for both the SAT and Raven within that sample.
You lack the subtlety to understand that my regression slope method and F&D’s (not F&H) range correction method are two independent ways of estimating the general population correlation from an elite sample.
My method: find a sample of people selected for high SATs and observe how much they regress to the general population mean on the Raven
F&D’s method: observe the SAT-Raven correlation within a sample of high SAT people and correct for range restriction
In theory, both methods should yield the same result but in practice they do not, because the high SAT sample is not just range restricted in ability, but also in SAT preparation.
Let’s say you gave the Raven to a group of chess grandmasters and in that sample found a 0.48 correlation between Raven and chess ratings, but after correcting for their range restricted IQs, the correlation increased to 0.72. Would that really mean there was a 0.72 correlation between IQ and chess in the general population, where most people barely know the rules to chess? Of course not; what it instead would mean is that if the general population were as committed to chess as the GMs, THEN the correlation would be 0.72.
It’s the same with F&D’s SAT corrected correlation. It doesn’t mean that if you gave the SAT and Raven to random 17-year-olds at the mall, you’d get a 0.72 correlation. What it instead means is that if every 17-year-old in America (including dropouts) took the same courses and homework as elite college students, THEN the SAT would correlate 0.72 with the Raven.
Your brain is simply not wired for this type of thinking the way mine is. You might have a graduate degree in math, but you can’t think outside the box statistically.
This isn’t technically the New SAT. What about the correlation between the post-2016 SAT to IQ?
What about post 2016 SAT?
Don’t know.