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Chanda Chisala and I post about each other so often that we should be employing the same agent. Properly managed, I might finally get onto a lecture tour circuit somewhere. The Shetlands, perhaps. Below is the post to which I am referring. My reply to Chisala’s post has hardly been prompt: one source of... Read More
Jim Flynn once observed that no-one was funding research into the genetics of racial differences in intelligence because they feared they would find something. Here is my psychologist’s summary of where we are as regards the genetics of intelligence in general: 10%. That is to say, by poking about in the genetic code researchers can... Read More
Grigoriev, Andrey & Lynn 2009 Studies of Socioeconomic and Ethnic Differences in Intelligence in the Former Soviet Union in the Early Twentieth Century Abstract: This is essentially a short history of psychometrics in the USSR/Russia. (1) The first measurement of Russian IQ was performed in 1909 by A.M. Schubert, who used the French Binet test... Read More
My first experience with Raven’s Matrices was as a psychology student. We did the test as a group, and then the Alice Heim 5 test of high grade intelligence, and finally inexpertly attempted to give each other the Wechsler test of adult intelligence. As you will have noted, the concept of intelligence and the ways... Read More
No sooner do I return from my own intelligence conference, about which more later, than I note, courtesy of another scholar, a fascinating new paper showing that 40% of the variance in IQ can be accounted for by a new measure of brain networks. This is strong stuff, so with a spinning head I tried... Read More
There is nothing like sex differences in intelligence to put you on the wrong side of half the population. The story so far is that the standard academic opinion on sex differences in intelligence is that there aren’t any, or that they are small, or that the few that exist counterbalance each other. Women are... Read More
My attitude to exercise was best summed up by cartoonist Paul Terry: However, I am not deaf to the cacophony of advisers recommending that people should keep active, particularly the over 50s. The notion seems to be that the elderly serve some undefined but useful purpose which could be prolonged by physical exertion. I find... Read More
Brain size and intelligence
Here is a very interesting paper on sex differences in brain size and intelligence, notable for linking people’s brain scans with their detailed intelligence test results. It has been accepted for publication in Intelligence. Sex differences in brain size and general intelligence (g) Dimitri van der Linden, Curtis S. Dunkel, Guy Madison Abstract Utilizing MRI... Read More
In my last article, “Scrabble Spells Doom for the Racial Hypothesis of Intelligence,” I argued that Africans should not be able to come anywhere near dominating the games of Scrabble (both English and French) or professional checkers, as they apparently do, if their real biological intelligence was anywhere near as low as their nominal IQ... Read More
There was a time when boys played games of marbles following strict playground rules: contestants had to stand a prescribed distance away from the little pyramid of marbles, and chuck only marbles of the prescribed size. Rules ruled. Piaget was intrigued by the explanations children gave for moral judgements, and the playground is the arena... Read More
It is a measure of the quality of British life that one of its longest running TV programs is “University Challenge”, a quiz show for university students. Yes, it has always been a minority interest, but it is a showcase of talent, an astounding example of what bright young people can get to know in... Read More
Lead poisoning reduces social mobility
There are still many people who believe that intelligence does not exist or that it cannot be measured, particularly if the summary result is given as a single figure. The argument seems to be that single figure cannot possibly represent their myriad abilities. Quite so. What are they to make of a recent finding by... Read More
I can claim to have been assaulted by micro-aggressions. I find myself profoundly hurt when people in my presence say “Intelligence – whatever that is”. They do it to vex me, which is beastly of them. Other aggressive behaviours include people in conversation denouncing anyone who holds a particular political opinion, without considering that I... Read More
Earth has not anything to show more foul
As these things go, it was not too bad. One idiot in a car murdered 3 people, with 7 more in a critical condition who may die, at least 40 with terrible injuries, and many more people traumatized. Crowds of tourists ran away from the place of slaughter at Westminster Bridge. Earth has not anything... Read More
Saturday is a relative slow day in my household, so it felt somewhat of a rebuke to read on the BBC that the Tsimané people have an ideal lifestyle, walking some 17,000 steps a day, as compared to the lethargic wealthy West, who aim for 10,000 daily steps but rarely take them. Those of... Read More
Despite being interested in intelligence, I am also on guard against judging the mind from the face (there's no art to find the mind's construction in the face) while probably doing just that all the time. I assume that I judge mental ability by conversations which go beyond pleasantries. Indeed, perhaps measuring how quickly people... Read More
Blade Runner had an impact on me, both as a film and because it was an introduction to the writings of Philip K Dick, whose whimsical work was based on wondering what it meant to be human. Are we as individuals merely constructions of fundamental genetic coding mechanisms, which create treasured but probably false memories... Read More
Smart groups are (simply) groups of smart people.
Few things attract more attention in the business world than new ways of making groups work well. As any fool knows, groups are a pain. They argue, dither, drift off course, waste time and resources, and produce loads of rubbish. Worse, all those participants draw salaries, so treasure is wasted. Surely, bosses think, any technique... Read More
Personally, after reading the above description, I have Linda in my mind’s eye, and I can just see her lecturing me on what sort of yoghurt I should eat. If I ever met her, I would not dream of admitting that I drive a diesel car, and that I have very recently taken up sketching... Read More
Add fertilizer and yields are boosted, up to a plateau; ignore the quality of the seed and yields slowly decline.
Everyone knows about the Flynn Effect, but very few about the Woodley Effect. When Woodley was working on his paper in 2013 “Were the Victorians cleverer than us? The decline in general intelligence estimated from a meta-analysis of the slowing of simple reaction time” I wrote to Charles Murray about his findings, and in his... Read More
Throughout my American Nations series (based on the books American Nations: A History of the Eleven Rival Regional Cultures of North America by Colin Woodard and Albion's Seed: Four British Folkways in America by David Hackett Fischer) I've talked about how North America is divided into distinct ethnocultural regions based on historic settlement patterns. These... Read More
It is good that people are discussing IQ. Fred Reed’s post has drawn many comments, too many for me to answer individually. Here I outline the main heads of his argument as I see them, and some of the relevant research. My summary of Reed’s post is: Intelligence is important; intelligence research is important and... Read More
No story about the brain is simple; no one study is definitive; and it takes many years to sort out conflicting and inconsistent findings and establish a weight of evidence. It is a fundamental truth that any researcher who can put a person in a scanner can publish a paper. Any researcher able to talk... Read More
In my earlier entry (Clannishness – The Series: How It Happened), we saw that the thing that made the difference between WEIRD Northwestern Europeans and their more clannish neighbors was the selective pressures that each underwent during their histories – particularly since the fall of Rome until the present. This era in time established the... Read More
  I have never played Scrabble. I may have tried once, but certainly gave up very quickly, before even finishing the game. I like words, but I don’t particularly like games. I can’t see the point of Scrabble, and would prefer to read a book, in which the words are assembled to convey meaning. Unscrabble.... Read More
Intelligence is worth talking about because both the reality of intelligence and perceptions regarding intelligence set limits on the possible and influence policy. For example, if the population of India on average really is below borderline retardation, the country can never amount to anything. If Latino immigrants really are as stupid as white nationalists hope,... Read More
Fundamentally solve the “intelligence problem,” and all other problems become trivial. The problem is that this problem is a very hard one, and our native wit is unlikely to suffice. Moreover, because problems tend to get harder, not easier, as you advance up the technological ladder (Karlin, 2015), in a “business as usual” scenario with... Read More
What is the use of Psychology? Surely knowing some psychology should confer an advantage? I mean a real advantage, over and above being able to give complicated post-event commentaries? How about this? If survival means avoiding premature death, then living is perpetual problem solving, and the better the solutions to problems, the better the standard... Read More
Flynn Effect background explanations.
    The Flynn Effect is important to understand; it is better understood now than ever before, but there is more to research; and it is probably more limited in its real-world consequences than people imagine, though the long-term consequences are still being debated. Say you take any test of ability, and as an example... Read More
  The Flynn Effect was originally noted by Rundquist (1936) and Lynn (1982) and then Flynn (1984). Credit should probably go to Runquist, but a happy compromise is to call it the FLynn effect, in honour of the two major researchers. The history has been described by Lynn, in part of a Special Issue on... Read More
My earlier entry (Clannishness – the Series: Zigzag Lightning in the Brain) established that there are deep distinctions between Northwestern European peoples and most of the rest of the world, and that these differences have a huge impact on the world, including on levels of human development, the strength of democracy and democratic institutions, scientific... Read More
I am still settling in at so please forgive me if I forget my lines and bump into the furniture, because the stage is much larger than my former small theatre. Not only that, but the cast is enormous, and the commentating audience ten times larger than usual, and rowdier. No country for an... Read More
Things move fast. A published paper comes to the attention of Steve Sailer and suddenly a section of a puzzle gets completed. Better still, the boundaries of ignorance get pushed backwards, which is always a good idea, and a fine Christmas present. From the isolation of my study, and from the depths of my... Read More
Baba Sy breaking world record for simultaneous draughts play.
The first logical way the American-invented cognitive game of Scrabble settles the score against radical hereditarians in the racial (Black-White) IQ gap debate is through a two step process: how do white female players compare to white male players in top-level elite Scrabble? Since many mainstream cognitive psychologists tell us that white women (like white... Read More
There are some topics which I have some interest in, such as prehistory illuminated by genetics, in which there is constant change and new discoveries every few months. If a new paper doesn't drop in a six month interval, I think something is wrong. There are other topics where I don't perceive much change, and... Read More
Why the Future is Looking Bright for Dullards
David H. Freedman’s “The War on Stupid People” (The Atlantic) provides a compelling argument that we collectively assign great weight to the trappings of intelligence. Academic credentials, standardized test scores, a professed interest in technology, and even the right kind of physical appearance (glasses, not too athletic) all serve as easily recognizable markers of intelligence,... Read More
This is atrociously long, criminally even, by internet standards but I post it anyway because I get occasional requests. Few will read it, which is understandable. Apologies. The Devil made me do it. Regular readers, if there is one, will have seen most of it before since in large part it is a gluing together... Read More
Appalachian white trash, presenting obvious neurological deficits consequent to inbreeding. A clear argument for eugenics.
Most considerations of eugenics, before wobbling off into discussions of Hitler, deal with intelligence and physical characteristics, notably health and strength. By those who constitute the best argument for eugenics, eugenics is usually interpreted as a means of oppressing the poor, maltreating the more bedraggled minorities, and euthanizing the retarded. Most commentators on the matter... Read More
Update: In light of further comments I may have been wrong about Hong's recent admixture! See the comments below (also, further discussion with Spencer Wells offline). I don't have total clarity on what's going on, because I'm sure my friends weren't lying...but they were also early adopters, and the methods may have changed. And, I... Read More
The above visualization is from a Reddit thread, Almost all men are stronger than almost all women. It's based on grip strength, and basically reiterates my post from last year, Men Are Stronger Than Women (On Average). The same metric, grip strength, is highlighted. The plot above shows that the "great divergence" occurs on the... Read More
A new paper in Nature Genetics, Characterization of Greater Middle Eastern genetic variation for enhanced disease gene discovery, is both interesting and important. But, as with the paper on the Andaman Islander genomes it starts out with a naive and misleading utilization of model -based clustering to frame the later results. Here's a major offending... Read More
One can appreciate a work of art on two levels. When one beholds the sculpted renderings of the Classical Greeks, across the distance of more than 2,000 years we can feel viscerally that they have touched something beautiful, and made it stone. To reduce this to biology, our perception maps onto to deep grooves in... Read More
There have been some media "explainers" about how genetics can't speak to Elizabeth Warren's Native American heritage. This is a complicated issue, and not all the assertions in the media pieces I've seen are wrong, but a lot of the details are very confused or wrong. In sum, this is very bad journalism from people... Read More
At the Eurogenes blog there has been a lot of analysis of South Asian genetic history in light of ancient DNA recently. Part of this is probably due to the fact that "Euro" genes (that is, the genetic history of European peoples) are now understood to be inextricably tied to demographic pulses and shifts which... Read More
Selection is one of the major parameters which population geneticists investigate. The easiest way to investigate selection is to have omniscience as to the change in allele frequencies over time. If you are a Drosophila geneticist this is feasible, as you control the reproduction of your model organism in the lab. It is obviously much... Read More
My main gripe with Inventing the Individual: The Origins of Western Liberalism, is that I don't think individualism is a sui generis invention of Western civilization (the author, Larry Siedentop, gives particular pride of place to Western Christianity as the mother and midwife of liberal individualism). It's hard to generalize about human nature and history... Read More
“Behavioral genetics” is a science that seeks to demonstrate a physiological and genetic basis for human behavior—for liberalism versus conservatism and for religion versus irreligion, among countless other traits. Some of it is well established, though not known to the general public, and other parts more-or-less established. Inevitably all of it is attributed to evolution... Read More
What a technologically tremendous time we’ve been living through this past few decades! That thought was inspired by the death last week of Andrew Grove, former CEO of Intel Corporation, and a key player in the computing revolution of the past half-century. I made my living for thirty years in Big Iron, the grand old... Read More
Henry Harpending (1944-2016) died this past Sunday. He had a stroke a year ago, and then a second one three weeks ago, but apparently he died of a lung infection. This is one of the risks of getting older: you dodge one bullet only to get hit by another. The cemeteries are full of people... Read More
It's the year 2030, and Jack and Lizzie want to have a baby the old-fashioned way. Eschewing artificial reproduction techniques that combine sperm and ova in a dish, they retire to their dimly-lit salon with a bottle of Italian wine and a bowl of strawberries, put an old romantic movie on the DVD, and let... Read More