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Though she is not a psychometrician, I was reminded of Nina Simone’s song by a recent paper on identifying gifted children, which found that an IQ test was better than the standard teacher referral systems at detecting bright black and hispanic kids. Good news I thought, and yet another vindication of intelligence testing. However, before... Read More
Some immigrants don’t contribute much: locals blamed.
Commenting on the findings shown on the Government website, the Prime Minister said: “What this audit shows is there isn't anywhere to hide. That's not just for Government, it's for society as a whole. Britain has come a long way in promoting equality and opportunity but what the data we've published today shows is that... Read More
Sex differences are in the news. A male Google employee reviewed some of the literature on the topic in the context of his workplace practices, and got sacked. A book questioning the role of testosterone in sex differences, and more generally the veracity of innate biological sex differences, got the Royal Society Science Book prize,... Read More
If people were crops, where would they be best planted? Like many people, I have read some books which have led me astray. They were plausible, and although I could see errors in them, I continued reading so as to learn new things. I am willing to accept that authors can be wrong about some... Read More
The Royal Society is the world’s oldest scientific society, and is held in high regard. To be a Fellow of that society is a great accomplishment. I am glad to have friends who have achieved this status, including one of the few couples who are both Fellows. So, it is a considerable surprise to learn... Read More
Optimal prediction to the rescue.
The “missing heritability” problem: current genetic analysis cannot explain as much variance as that suggested by population heritability estimates. This has been a cue for “Down with twin studies” arguments, in which those of dramatic inclinations have chosen to imagine that heritability estimates were thereby disproved. Not so. I was never particularly worried about this... Read More
The United States just experienced its largest rainfall event in memory. For the first time in recorded weather history, two category 4 hurricanes, Harvey and Irma, hit in a single season (not yet over). And San Francisco, famed for its chilliness, experienced an unheard of 106 degree day as September began, while a record West... Read More
Militarizing Homeland Security in the Climate-Change Era
Deployed to the Houston area to assist in Hurricane Harvey relief efforts, U.S. military forces hadn’t even completed their assignments when they were hurriedly dispatched to Florida, Puerto Rico, and the U.S. Virgin Islands to face Irma, the fiercest hurricane ever recorded in the Atlantic Ocean. Florida Governor Rick Scott, who had sent members of... Read More
In my last post “Even more genes for intelligence”, I alluded to the mysterious Hsu Boundary, and I encourage you to use this phrase as often as possible. Why should other researchers have a monopoly of jargon? The phrase should help you impress friends, and also to curtail tedious conversations with persons who have limited... Read More
Africans have finally ended Russia’s historical state-sponsored dominance in the fastest form of international checkers: blitz draughts. Jean Marc Ndjofang of Cameroon (pictured above) is the 2017 blitz world champion.
Arthur Jensen's generation of race hereditarians (Eysenck, Rushton, Shockley and perhaps even Charles Murray et al) were quite different in posture from many of their current young followers. Jensen, like most of his friends, apparently wished to be proved wrong about his genetic hypothesis of racial differences in IQ because he genuinely hoped that what... Read More
I was recently interviewed by Robert Stark (of The Stark Truth). That interview is up as a podcast here: Robert Stark interviews Jayman - The Stark Truth With Robert Stark Just to get this out of the way, in this interview I didn't cover much new ground. Long-time readers will be familiar with what we... Read More
The intelligence gene hunters have been stepping up their activities, and keep coming back with more trophies. Danielle Posthuma and colleagues are at it again, studying very large samples and finding further novel genes which load on brain tissues. I hope someone somewhere is keeping track of the overall picture, perhaps in a control room... Read More
In describing the Kaplan-Meier survival graphs in "Vita Brevis, Dignitatis Inutilis" I correctly described the findings in the Iveson et al. paper, but then went a step too far in equating a decrease in mortality risk with an identical increase in lifespan. I said: The second sentence should have read “So, at IQ 115 your... Read More
The SPLC headquarters in Montgomery, Alabama. Credit: Wikimedia Commons
Galileo Galilei (1564–1642) has been called the Father of Modern Science. So it is fitting that he was, perhaps, the first scientist to be censured and silenced by political forces represented in his day by the Catholic Church. The issue then was evidence Galileo presented supporting the Copernican heliocentric model of the solar system that... Read More
If bright people live longer, is it because of the good things that social status provides? This question may appear to be very hard to answer, because one thing leads to another, and bright people are clever enough to build themselves agreeable places in which to live. One approach is to “control” for this, on... Read More
In my last post I said: I had no idea that my thesis would receive instant support the following day in a paper which begins with a stirring paragraph, worth quoting in full: Since its discovery in 1904, hundreds of studies have replicated the finding that around 40% of the variance in people’s test scores... Read More
My impression of Damore’s Google Memo is that it is a thoughtful and well-considered personal opinion about workplace differences in abilities and attitudes. The tone is reserved, measured, and reasonable, avoiding sweeping claims. For example, it restricts its scope to the particular office in which he worked, and not Google as a whole. It is... Read More
The picture shows that working memory for simple repetition (Forwards Digit Span, Forward Corsi Blocks) has increased slightly over 43 years, whilst working memory for the more complicated task of items in reverse order (Backwards Digit Span, Backwards Corsi Blocks) has fallen slightly. Digit span is a bombshell of a test. Despite being very brief... Read More
goolag-google-manifesto
This week’s big story on the CultMarx front was the firing of Google employee James Damore. The firing offense was, he had written a document titled Google’s Ideological Echo Chamber and circulated it on Google’s internal network. The document was leaked to journalists, the nation’s CultMarxists threw a collective fit of hysteria, and Damore got... Read More
Simply because the immediate reaction to the Google Memo concentrated on sex differences I gathered together some posts on sex differences, showing that the sexes differ somewhat in their abilities: not very much, but enough to make a difference at the extremes, and it is the extremes which make a difference to technology based societies,... Read More
Since Google does not employ me, it cannot sack me, but I admit to feeling a little left out of the news recently. In a late bid for notoriety I have put together a series of my previous statements about sex differences, and if you will kindly circulate these as widely as possible someone may... Read More
France is a territory which lies to the south of the English Channel, and was largely managed by the English Crown till it fell under the sway of the local inhabitants, with mixed results. It is a large domain, blessed with ample resources and noble prospects, of which its azure Mediterranean coast is a treasured... Read More
darwin-499x372
John Derbyshire writes: I gave a half-hour PowerPoint presentation under this title to the AmRen Conference on July 29th 2017. Video of the event will be posted at the AmRen website some time soon. As a pre-Information Age relic, my default format is the essay. For events like this, I first write out an essay,... Read More
The time has come for a review post on the laws of behavioral genetics. I will talk about why these laws are laws and why they are important. Eventually, this will be merged into my Behavioral Genetics Page, but for now, I will start with this primer. The five laws of behavioral genetics are: All... Read More
When did humans first become human? The answer is far from simple, because the question assumes that sometime in the past, humans achieved modernity and were locked within an evolutionary loophole where natural selection no longer applies. Despite the absurdity of this scenario, and in stark contrast to empirical data, it is widely believed that... Read More
The loathsome truth about psychology textbooks
I have a secret hope that one day one of my readers will write a psychology textbook, and that intelligence will be mentioned in an up-to-date and accurate manner. Years ago, when reading a new UK textbook that took an apologetic and partial view of racial differences in intelligence I planned to look at the... Read More
Here are two presentations from the London Conference on Intelligence in May. They are in what I would call the proper format, in that both the speaker and the slides are visible, and the sound is on throughout. Almost like being there. The conference is speakers only, so the audience is about 24 persons, hence... Read More
If solving problems doesn’t motivate you, what does?
One of the joys of attending a conference on intelligence, such as ISIR2017, is hearing people report the results of their detailed investigations into overblown claims in science reporting that one had oneself thought questionable. Will the proper researcher come to the same conclusions as you had in your own preliminary reactions? Years ago I... Read More
Things move fast here. No sooner do I give you the brief description of my visit to see the Big Brain than I can announce the movie of the same. Here is the Big Brain film, showing how it was put together, and what it is like to use. http://mcin-cnim.ca/research/bigbrain/ Here is the link to... Read More
As loyal readers will know, getting to conferences is an intellectual challenge for me. Having worked out where and when they are to take place, the problems multiply. Travel must be arranged for both before and after the conference dates, which is difficult when the venue is in a different time zone, and even more... Read More
1.6% to 2.4%
There are two main approaches to understanding the evolution of intelligence. A) Study the differences in intelligence between genetic groups. B) Study the differences in intelligence within a genetic group. Approach A is currently not being funded, as far as I know, but please let me know if there are studies I should be commenting... Read More
I have always assumed that the Ancients were wiser than us, but I admit that my evaluation is subject to survivor bias: the best of their thinking has been passed on to us, the mediocre rest forgotten. The Ancients were not all at the level of Socrates, they also included the dullards that killed him.... Read More
Although the Bard warned against finding the mind’s construction in the face, we are apt to try. Can facial features show us the power of the brain behind the mask? Lee et al. (2017) think so. https://drive.google.com/open?id=0B3c4TxciNeJZTGpEdkJBbnVmNFE Unlike minor Scottish nobility planning regicide, they have made their judgments using the medium of facial photographs of... Read More
shutterstock_664540639
Apologies to the reader. Perhaps I wax tedious. But the question of intelligence is both interesting to me and great fun as talking about it puts commenters in an uproar. It is like poking a wasp’s nest when you are eleven. I am a bad person. Clearing the underbrush: Obviously intelligence is largely genetic–if it... Read More
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. http://www.unz.com/article/will-scrabble-have-the-last-word-on-the-iq-debate/ My reply to Chisala’s post has hardly been prompt: one source of... Read More
Dear Prof Posthuma, Thank you for your comments. These comments are not new, and that is not necessarily a bad thing. Actually, it works to my advantage because over the years I have had the opportunity to develop ways to rebut these criticisms. One of the ways of answering your criticisms, and the one which... Read More
As you know, this blog moves at internet speed, not the glacial creep imposed by academic publishers, with their lucrative frustration of intellectual discourse. No sooner do I write about the work of Piffer, and his use of the new findings of Sniekers et al. (2017) than a senior author on that latter paper, Prof... Read More
Polygenic scores cannot predict a person's IQ, but can they tell a genius apart from the crowd?
A day is a long time in genetics research. Yesterday I made the following prediction about the method that David Piffer has used to estimate racial intelligence: Prediction: we will need very many more SNPs before we can attempt predictions of individual IQs across different races at better than a correlation of r=0.7 Having made... 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
Underestimated associations
It is now commonplace to denounce any observed associations between groups and behaviours as being “stereotypes” with the strong implication that these preliminary impressions are dreadfully wrong, and malevolently so. However, these first impressions should be evaluated against objective measures, in which case they can be shown to over or under estimates of the association... 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
After the slaughter of innocents, the ritual of abnegation. While parents pleaded for news about the pieces of their children, the citizens of Manchester met in a public show of solidarity, in an all faith meeting to show that “the bombers would not win”. We have plenty of experience of organizing those. Commendable, very Christian,... 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
Estimating blogger productivity
This is not about baseball, but about blogging, but times are hard for some columnists, so I needed to get your attention. Steve Sailer has put up his March statistics (More records for iSteve, April 3) showing that last month his posts generated 19,707 comments containing a total of 1,485,295 words. By any standards, this... Read More
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