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Effects of adoption on intelligence: 42% heredity, 8% environment?
I don’t do policy, but how about this one? In addition to all public policies aimed at getting rid of the achievement gaps between different groups, why not take an intensive approach? Continue with every program which is already under way, but add this one. Get every child who is under-performing to live permanently from... Read More
The Rand Corporation had a look at the factors which led to effect war fighting, and found that ability was a key factor. Thanks to commentator Mac Tonight for the link. Determinants of Productivity for Military Personnel: A Review of Findings on the Contribution of Experience, Training, and Aptitude to Military Performance Jennifer Kavanagh Prepared... Read More
Does the world need another IQ test? There are many well-validated tests, and also a number of short tests suitable for large scale surveys, many of which take less than 10 minutes, and several useful ones which take less than 5 minutes. However, if you are searching for a good measure of the manifold panoply... Read More
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85 is to 100 as 100 is to 115
A staple of the columnist’s life is mail embodying a weird obsession with Jews. It is a versatile obsession, suitable for any occasion. If I were to write a column on the economics of watermelon farming in rural Kansas for a conservative site, a high proportion of the comments would consist of angry denunciations of... Read More
John McWhorter
John McWhorter, who teaches at Columbia, is one of a handful of blacks who write sensible things about race. He complains that the media bellow whenever police kill a black man but are silent when they kill a white man, and worries that claims of “systemic racism” are leading to a movement to exempt blacks... Read More
Charles Murray, Facing Reality: Two Truths About Race in America, Encounter Books, 2021, 151 pp., $25.99 (hardcover) Sometimes, a single brave man can break a taboo. Nicholas Wade’s carefully argued May 5 article in the Bulletin of the Atomic Scientists broke the ban on the lab-leak view of the origins of Covid-19. In just a... Read More
It is difficult to overstate the significance of Charles Murray and Richard Herrnstein’s The Bell Curve to the thinking of pre-Alt Right White identitarians, specifically its section on the cognitive and behavioral differences between the races. The dominant mission of the movement then was propagating the forbidden truth of racial differences. When I first became... Read More
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To See Why, Just Look Around
The systematic study of intelligence if fraught, dangerous, since everyone instantly thinks, “Race. Blacks. I will lose my job and live in a tent on the sidewalk if I think about this.” The concern is that study might reveal differences between groups. Oh God. So: Should we study it or not? The panic arises only... Read More
The British Broadcasting Corporation is one of the world’s largest (35,000 employees including part-timers) and best funded news organisations, against which few can compete. Not only does it have a budget which in 2018-19 amounted to £4.0 billion ($5.6 billion), but it is virtually guaranteed the continuation of that level of income by a government... Read More
Recently, VDARE.com’s Lance Welton cited my work when suggesting that a general decline in intelligence—among whites, quite apart from the immigration of lower IQ races—was one reason for the disgraceful jury verdict in the Derek Chauvin show trial. People often react incredulously when told of this IQ decline: “Haven’t you heard of the Flynn Effect?... Read More
Ultrasound of Emma - 20 weeks old. Credit: Michael Fürstenberg/Flickr
Or, the Accidental Biopolitics of the Culture Wars
Culture wars seem to be everywhere across the West these days. American politics has notoriously been plagued for decades by divisive conflicts over guns, abortion, and gay marriage (now replaced by the exotic trans phenomenon). Europe is also no stranger to such conflicts, whether within or between countries, though in the postwar era these appeared... Read More
Max Roser does great work at “Our World in Data”, virtually all of which I read and retweet approvingly. He has just written a paper calculating the amount of economic growth which will be required to lift people out of poverty. Lots and lots of growth, he argues. I think it likely that lots of... Read More
chandascrabblejews-1
Let’s begin by acknowledging a couple of kind (re)tweets from the hereditarian-HBD side on my last Unz article on IQ and race (Why Do Blacks Outperform Whites in UK Schools?): Murray tweet: Sailer tweet: After the recent death of the great James Flynn, I thought I should finally get back to writing some updated articles... Read More
You know the story, but here we go again. The standard account of sex differences in intelligence is that there aren’t any. Or not significant ones, or perhaps some slight ones, but they counter-balance each other. The standard account usually goes on to concede that males are more variable than females, that is to say,... Read More
Footnote to that: I've known that quote for as long as I can remember, but without recalling why I know it. I've never read William Cobbett, so it must have been somewhere else I saw it. The mystery was solved as an indirect result of my posting, in last month's diary, a few words of... Read More
chinaamericappp
Intellectual paralysis means economic paralysis. This video is available on BitChute here. Last week I explained why different groups don’t achieve at the same level. It’s because the races are not identical. There are all sorts of interesting differences – this paper from just last year says you can tell American blacks from American whites... Read More
Many people have very strong beliefs about intelligence testing. All too often those beliefs are negative and unrepresentative of intelligence research. For intelligence researchers, it is a bemusing, irritating, and depressing state of affairs. Steven Pinker, being interviewed at the International Society for Intelligence Research conference in Montreal in 2017, when asked why public understanding... Read More
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Earlier: Richard Lynn Stripped Of Emeritus Status For Saying The Same Things That Made Him A Professor In The First Place and “He Kept The Faith”—A Conversation With Richard Lynn Everyone with an interest in why our world is the way it is owes a debt of gratitude to Richard Lynn, the indefatigable psychometrician best... Read More
You may remember that in 2011 Heiner Rindermann and I worked on the concept of cognitive capitalism, developed that over the next few years, and in 2018 Rindermann published a major book on the topic. Here is a brief interview in which he answers a few questions which generally come up regarding intelligence. Usually, media... Read More
The “Great Awokening”—the Maoist Cultural Revolution we are living through—is impacting academia heavily[The Great Awokening and the Second American Revolution, by Eric Kaufmann, Quillette, June 22, 2020]. We’ve seen the closing of the London Conference on Intelligence in 2018 and the firing of researcher Noah Carl by Cambridge University partly for attending the London Conference... Read More
Do genes account for 50—70% of racial differences in intelligence?
It is perfectly reasonable for critics to ask, every so often, if there is any work showing that genes make a contribution to intellectual differences between genetic groups. I assume it can be accepted that genes make a difference within a genetic group, and the animus arises only when genetic groups are being compared. One... Read More
No one paper can determine a debate, but each contributes to a pattern, and eventually to a shifting of opinion as to where the probable truth lies. Until 2011 the studies of the genetics of intelligence were based on twin studies, which are fine; and adoption studies, which give some indications if the samples are... Read More
Sense and sensitivity
If someone tells me I must not read something, I am tempted to give it a look. If you are reading this, you probably have the same curiosity, and the same wish to rebel against other people telling you what you may not read, and what you must not think. In that light, here is... Read More
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Charles Murray, a sociologist by background and a datanaut by inclination, has carved out a prominent place in American intellectual debate by the simple expedient of writing clearly about difficult subjects. He is an Enlightenment Regular Guy, who does not want Americans to lose ground, or be split apart or be cast asunder by imperious... Read More
The start of a decade is traditionally ushered in with a flurry of predictions. Those usually turn out to be wrong, but are illustrative of the expectations of the current age. Errors are informative, and show our limitations, our fads and misunderstandings. Looking back at predictions can be fun. Hindsight allows us to feel superior.... Read More
It is extremely brave of Dr. Chanda Chisala (right) considering the hot water that even writing a critical letter to VDARE.com can get you into, to write a response to my article “Race Denier Chanda Chisala Doesn’t Deserve His 15 Seconds Of Twitter Fame” in the form of “Reply to Lance Welton: Why Blacks Outperform... Read More
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Writing about intelligence is splendid fun if you like watching dogfights among towering vanities. (This assumes that vanities can tower, though I’m not sure how dogs come into it.) On one side you have the politically correct protectors of Appropriate Values. These secretly believe that blacks are less intelligent than whites and live in terror... Read More
For some years now I have made occasional mention of a survey conducted in May 2013 to March 2014 to find out what intelligence researchers thought about racial differences in intelligence. Now the paper has been published, so in academic terms the work actually exists, and can be quoted and commented upon. I can remember... Read More
Response to Birney, Raff, Rutherford, & Scally
It is good to have an essay which sets out a point of view clearly, so Ewan Birney’s 24th October blogpost (Ewan Birney, Jennifer Raff, Adam Rutherford, Aylwyn Scally) is welcome. A summary of this sort gives discussions of racial differences a focal point. Race, genetics and pseudoscience: an explainer It is not up to... Read More
It is generally agreed that the Wechsler tests are one of the best measures of intelligence, and can be considered the gold standard. That is hardly surprising, because they cover 10 subtests and take over an hour, sometimes an hour and a half, for a clinical psychologist to administer. This gives the examiner plenty of... Read More
It takes a certain courage to title a paper: Genetic “General Intelligence,” Objectively Determined and Measured. Javier de la Fuente, Gail Davies, Andrew D. Grotzinger, Elliot M. Tucker-Drob, Ian J. Deary doi: Objectively? Is such language permissible in contemporary science? Should we not instead be cautiously shuffling towards seven types of ambiguity, hedged in with... Read More
A presentation and reading by Hamilton Gregory, author of "McNamara's Folly: The Use of Low-IQ Troops in the Vietnam." Because so many college students were avoiding military service during the Vietnam War, Defense Secretary Robert McNamara lowered mental standards to induct 354,000 low-IQ men. they were known as McNamara's "Moron Corps.” Their death toll in... Read More
There is a popular genre of commentary which wishes to show that bright people make as many errors as less bright people, perhaps as a consequence of divine retribution. “Einstein made an error in maths which was spotted by a bus conductor” lifts the hearts of some readers. Of course, bright people make errors. Do... Read More
“All happy families are alike” declaimed Tolstoy, so as to then add the equally unsubstantiated coda: “each unhappy family is unhappy in its own way”. Readers may say: “So true, so very true”, but that would be in the literary sense, in that if it sounds profound it is judged to be so. Like all... Read More
net-worth-and-income-by-iq
Do bright people earn more than others? If not, it would strengthen the view that intelligence tests are no more than meaningless scores on paper and pencil tests composed of arbitrary items which have no relevance to real life. So, it is with trepidation that I responded to a suggestion by a reader that I... Read More
When dull meet bright, tough love rules
What happens when above average and below average ability people have to deal with each other? Specifically, how will they interact when potentially both are able to gain from the exchange? It seems obvious that they should cooperate, and extract the greatest amount of mutual gain, but does this really happen in situations where there... Read More
Psychological test.  1990.0034.173.
When I started work in September 1968 one of the first things I was taught was that intelligence testing had a long history, and that many of the subtests in the Wechsler assessments I had been taken from previous research. Kohs’ blocks (1920), I used to mutter, when people talked about Block Design. I was... Read More
Teachers loom large in most children’s lives, and are long remembered. Class reunions often talk of the most charismatic teacher, the one whose words and helpfulness made a difference. Who could doubt that they can have an influence on children’s learning and future achievements? Doug Detterman is one such doubter: Education and Intelligence: Pity the... Read More
For some years I have been organizing the London Conference on Intelligence, which brings together about 25 invited researchers to present papers and debate issues in a critical but friendly setting. (“The London School” was the name give to those who argued that intelligence had a general component, and was heritable). Speakers are chosen for... Read More
lynnbooknations
Richard Lynn, now 89 years old, has made it his mission to discover the average IQ of every country on Earth. His first book on the subject, IQ and the Wealth of Nations [2002], written with Finnish political scientist Tatu Vanhanen (1929-2015), was put out by Praeger, a mainstream academic publisher. Since then, Lynn, usually... Read More
You can detect a lot about a person using simple tasks which take less than 2 minutes. Here is a test which did the job in 90 seconds, but then got lengthened to 120 seconds to make it even more reliable. Of this test, one of those Edinburgh researchers said to me in a conference... Read More
polygenicjewishiq
See, earlier, from 2007: Charles Murray's "Jewish Genius", by Steve Sailer The Left’s attitude to IQ epitomizes its irrational, contradictory, self-serving, anti-science world view. At one moment, IQ tests are biased against blacks, IQ tests don’t measure anything meaningful, and there are different and equally important kinds of “intelligence.” But when a 4-year-old black girl... Read More
The Great Retrodiction: English speakers only
Science marches on. A researcher writes in to chide me that I have forgotten the fastest intelligence test of all, which masquerades as a simple reading test, but which can reach back 50 years, and in 90 seconds deliver a precise verdict on the best level of ability you had in your prime. Indeed, I... Read More
How much could you learn about a person in two minutes, just getting them to answer written questions? I suppose you could ask them their favourite colour or song, or quiz them about their other preferences, occupations, and sundry other demographic matters. Getting them to reveal marital status, religion, politics, earnings and savings might be... Read More
Replies to a reviewer and to blog commentators
Before posting up Piffer’s paper, I sent it to a reviewer, someone who works in intelligence research. I explained that many geneticists were dismissive about Piffer’s work on group intelligence, and asked for a critical opinion. Here is that opinion, and Piffer’s replies. Piffer also includes responses to the main themes which came out of... Read More
Predicting group intelligence averages by polygenic risk scores alone.
The figure shows standardized polygenic scores by population for Education GWAS, in descending order (1000 Genomes Populations, EA MTAG, N= 3,257 SNPs). One function of a blog is to let people shoot down ideas. Conjectures have a short half-life. Refutations always snap at their heels. David Becker, whose latest version of country IQs received trenchant... Read More
schoolstrike
In the middle of March, teenage school students around Europe went on “strike” to protest against their governments’ failure to do enough to combat “Climate Change”. [How Greta Thunberg's school strike became a global climate movement,The Local, March 14, 2019] In Germany, thousands of youngsters are skipping lessons every Friday to march through their towns... Read More
Becker update V1.3.2
David Becker has released a new version of the World’s IQ. Each country has a score showing the cognitive abilities of their citizens, this being a blend of genetics and the environment of each country, particularly as regards education and health. The world’s global score is 82. This is 12th percentile rank on the Greenwich... Read More
Of course you’re bright, darling
Although I did not entirely ignore the subject. I should have paid more attention to people’s estimates of their own intelligence. Self-estimates are error prone, and may have negative consequences in real life, as well as making discussions about intelligence remarkable error-prone. Adrian Furnham did several papers on this topic, and Sophie Von Stumm made... Read More
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Whites have a stellar IQ compared to Blacks; this is an idea one often encounters in the writing of my esteemed colleagues on Unz.com. But when the country, the USA, was in dire need, the only person who dared to step forward into the line of fire was not a smart white guy, but a... Read More