Book Review: The Ten Thousand Year Explosion (2009) by Greg Cochran and Henry Harpending

October 27, 2014


I have a feeling most people don’t read reviews, but with some books I still think it’s worth making a little noise. Books like The Blank Slate by Steven Pinker, The Nurture Assumption by Judith Rich Harris, and The Righteous Mind by Jonathan Haidt. And now this one, so yes, it’s kind of a big deal. Many readers of this blog are no doubt already familiar with it, but since some probably aren’t, and it has been ignored by most of the media, I feel I should throw my two cents in.

The Persistence of Blank Slatism

The authors, physicist Greg Cochran and anthropologist Henry Harpending, challenge a common view among both the public and in Academia that evolution ended some 50 thousand years ago after the exodus out of Africa, or that it’s too slow to have any meaningful impact on humans within that time period. For that reason we must, they claim, be the same biological creatures as we were back then. As a consequence of this view, the cultural diversity that we see today and throughout history must also be unrelated to biology. They quote the late biologist and popular science writer Stephen Jay Gould who sums up (and embraces) this opinion,

“Everything we call culture and civilization we’ve built with the same body and brain.”

Most of his readers gladly accept this as the truth. It is after all the Blank Slate that has dominated Western thought on human nature for the last 400 years or so that claims we are all built of the same stuff, we all share an incredible ability to change, improve, and evolve. Steven Pinker did some damage to this idea but most people who have read him seem to have landed in a half slatism, admitting they were wrong but only half wrong. In psychology, this is known as anchoring: people don’t change opinion to fit the evidence but meet the evidence half way. And ironically you can be as anchored in thinking you’re a free spirit as in any other point of view.

But “the same body”? Are there Japanese people who can be mistaken for Scandinavians? Are there Peruvians who could pass themselves off as Nigerians?

More likely, as the authors argue, is that when leaving Africa humanity spread to various different environments, each with its own unique selective pressures. East Asians (to be) who passed through the extremely cold climate of central and northern Asia got shorter extremities. They and northern Europeans became paler as they were less exposed to the sun and they lost the ability to retain salt while sweating as they sweated less in their new environments. The people of the Andes and Himalayas became adapted to high altitude, and so on.

In short, our bodies are not the same. There are plenty of differences that are obvious adaptations to new environments giving rise to slightly different variants of Homo sapiens. And there are no supernatural elves guarding the blood-brain barrier either; the brain, for all its sophistication and complexity, is still part of our body, so anyone seeking the truth about human nature must at least entertain the possibility that evolution may have produced mental, biologically based group differences.

The Upper Paleolithic Revolution

There is little doubt that something big happened around 45 thousand years ago. At this time all sorts of innovations pop up – bow and arrow, fishnet and fishhook, cooking, rope, basket, textiles. Other novelties such as art, music, trade, and ritual burials indicate that there was a sudden and fundamental shift in human thinking, away from the day-by-day living of roaming bands, towards a more reflective, planned and organized way of life.

This abrupt change is hard to understand in terms of natural selection as there is very little time and no signs of strong selective pressures. In fact it seems so hard to understand it that many scholars deny it altogether. Instead, they argue for a gradual development by showing cultural artifacts that predates that of the Great Leap Forward, as it’s sometimes referred to. But I think it’s clear that they make their case more with words than with actual evidence. The extent to which they ascribe ingenuity and artistic qualities into the artifacts predating the Great Leap is similar to how some mothers will praise the scribblings of their children. As geographer and science writer Jared Diamond pointed out in another interesting book, gradualists have a tendency to give fancy names to early primitive tools as a way of creating an appearance of continuity,

Early stone tools vary in size and shape, and archaeologists have used those differences to give the tools different names, such as ‘hand-axe’, ‘chopper’, and ‘cleaver’. These names conceal the fact that none of those early tools had a sufficiently consistent or distinctive shape to suggest any specific function, as do the obvious needles and spear-points left by the much later Cro-Magnons. Wear-marks on the tools show that they were variously used to cut meat, bone, hides, wood, and non-woody parts of plants, but any size or shape of tool seems to have been used to cut any of those things, and the tool names applied by archaeologists may be little more than arbitrary divisions of a continuum of stone forms.

So most likely there was a Big Leap, and a corresponding biological leap that enabled it. But what kind of biological change could have such a dramatic effect?

The Neanderthal Within

As I said earlier, natural selection is not a likely candidate. The change is just too large and rapid, even if the new environments presented strong selective pressures and humans had lots of pre-existing genetic variation to work with. And clearly the new environment did not set the Neanderthals already living there on a highway to any kind of cultural revolution.

Instead the authors suggest that the change was caused by interbreeding between the Homo sapiens leaving Africa and the Neanderthals who lived in Europe and Asia. These two species split up some half a million years ago and Cochran & Harpending point out that no primate species have split completely in such a short time. And as human population genetics shows, people who live next to each other will inevitably mix to some extent. So common sense dictates that interbreeding was very likely.

This way Homo sapiens could have picked up a number of advantageous gene variants almost instantly. Most likely some of these variants relate to language skills (it’s very hard to think of something like trade without some kind of language). One such candidate gene is the FOXP2 that involved in speech, another suggested by the authors is MCPH1 that regulates brain size, as these both have new versions that roughly fit the time when Homo sapiens met Neanderthals and the cultural explosion that followed.

Since this book was written in 2009, you may wonder how well the theory holds up in view of current evidence. Well, recently gradualists have seized on a piece of depictive cave painting in Sulawesi, Indonesia, estimated to be around 35 thousand years old. They argue that this find somehow makes their case, but I honestly can’t see how it would do that. It leaves plenty of time for Homo sapiens to leave Africa, pick up the crucial Neanderthal gene variants in the Middle East or Europe and then migrate to Southeast Asia. And fact remains that advanced artifacts, such as depictive paintings, are still only found in times and places where people are likely to have Neanderthal admixture.

Meanwhile the evidence for interbreeding, doubted by gradualists like anthropologist Sally McBrearty, is now pretty solid. Recent studies also indicate that the authors were slightly off regarding the time line as it appears that interbreeding happened just before the window of opportunity would have closed. The FOXP2 is also ruled out as a Neanderthal contribution to contemporary humans. But the main point is that it did happen and that and non-Africans (Neanderthals were never in Africa) worldwide now have a few percent Neanderthal DNA as a consequence. So thus far, their theory is holding up pretty well.


This, however, isn’t even the main point of the book. The Upper Paleolithic Revolution is just the starting point of a new chapter in human evolution. Cochran & Harpending argue that the cultural innovations that emerged around 50 thousand years ago created selective pressures that were much stronger than those already in place so that we evolved faster than before. Sure, innovations had no patents back then so they were accessible for all. But not everyone was equally skilled at using them. If you’re good with a bow and arrow you’ll shoot the game from a safe distance, if you’re less skilled you’ll have to get closer and take the higher risk. But that would still be preferable to getting up close and bludgeoning it to death with a club, which seems to have been the Neanderthal way.

Language, as the authors point out, may well be the most important cultural innovation of them all, and no doubt one creating an enormous selective pressure. With good language skill you can excel at trade, you can convince, seduce, and deceive as well as detect deception. You can make detailed plans together with others. All of this confers obvious fitness – in proportion to your skill level. And thus far we don’t know of any skills that aren’t highly heritable. So if you agree that language and other cultural innovations have been of great importance to our success and survival in our recent past, then you must also agree that the genes behind the corresponding skills would have been selected for in proportion to that success. These skills then changed how we think which must have led to further innovations, “Men made better tools and then, in turn, were reshaped by those tools over many generations.” This of course must have been going on since the dawn of humanity. But with the Upper Paleolithic explosion the process shifted gears.

Genetic Evidence

As plausible and common sense as this sounds, the authors also offer more direct evidence of recent selection. For instance that which is based on a phenomenon called recombination. Thing is, we don’t inherit single genes, instead chromosomes from our parents are cut into 2-4 pieces and half of these pieces from each parent are then put together – recombined – to make our own chromosomes. As the cuts are few and the chromosomes contain enormous stretches of DNA, it’s unlikely that a cut will be anywhere near a single gene. So when a favorable mutation starts spreading through a population its closest neighbors usually tag along, like the entourage of a rising star. Together they make up a characteristic pattern called a haplotype. The more advantageous the mutation is the more common the haplotype will become. But with every generation that passes the cuts in the chromosomes will reduce the length of the haplotype so that fewer and fewer genes around the mutation will be shared in the population. So while fitness is indicated by how common the haplotype is, age is indicated by its length (the longer, the younger).

This means that common and long haplotypes can only exist if there is still strong and recent selection. This is for instance the case with lactose tolerance among people of European ancestry, which is only a few thousand years old. But according to the authors, recent studies show plenty of long and young haplotypes, some of which have reached 100 percent frequency in their populations. This can only mean that there is both strong and recent selection on a large scale. So evolution is still going strong

They offer other types of evidence too, supporting the idea that the rate of evolution is accelerating, but this is the part I found most convincing.


Unlike the Upper Paleolithic Revolution, agriculture was a single innovation that emerged some 12 thousand years ago. But its impact on the course of evolution was probably at least as big. It increased the world population from ca 6 million to 600 million by the time of Christ. As mutations are proportional to the size of the population this means a hundred fold increase of new mutations to speed up evolution even more. But like any innovation promoting fitness it also created a selective pressure benefitting the most skilled farmers.

But it also meant a new diet, based heavily on grain. While more people could be fed this way, the diet itself was low on protein and other nutrients. Average height dropped almost five inches with the introduction of agriculture. This meant that any mutations that would somehow increase access to protein would be selected for as was the case with those rendering owners lactose tolerance. The mutations that enabled adults to consume dairy food spread like wildfire among early farmers. This is a very compelling piece of evidence of the process of gene-culture coevolution that the authors mean is the force that has created our human nature. Culture (in this case agriculture) created a selective pressure for lactose tolerance which then in turn affected our culture as our diet and food production changed. And all this in just a few thousand years. Do we have any particular reason to assume that this process wouldn’t affect our culture and our behavior in other aspects?

Personality: The Rise of the Nerds

I ask this because just like the Upper Paleolithic innovations made certain skills important so did agriculture. The former most likely brought complex speech and the ability to deceive. Before that life was probably no picnic, but there wasn’t much room for Dark Triad personality traits. Language, however, must have created a huge selective pressure for such traits. And with agriculture came new traits, since traits tend to correspond to skills. The hunter-gatherers didn’t need to make plans; they roamed, and they may have memorized certain places and routes where food was plentiful or where they could find shelter. As the authors point out, instant gratification would not be a problematic trait under those circumstances. But the farmer who ate just a little of the grain needed for next year’s sowing may well have sealed his and his family’s fate that way, especially a northern farmer.

Farming changed the whole way of life. It required making plans, collecting and evaluating information, and thinking ahead – sometimes years ahead. It required intelligence, true, but also a kind of personality captured by Big Five Conscientiousness, MBTI Thinking and Judgment, or the Cerebral factor of interests isolated by psychologist Peter Rentfrow and colleagues. These all refer to being rational, deliberate and careful. While this sounds like being intelligent none of these measures correlate with actual intelligence. It’s more similar to being nerdy. This cerebral/nerdy trait is most likely an even newer aspect of human personality than the Dark Triad.

What about the Pastoralists?

This begs the question of why people in the Middle East, who the authors argue should be the most adapted to agriculture, can be so unnerdy? They mention resistance to type 2 diabetes as an example of an adaptation to agriculture (a larger intake of carbs), but people in the Middle East have the highest prevalence of type 2 diabetes in the world. There is a possible explanation for this in the form of nomadic pastoralism. This culture emerged around 3000 years ago in the Middle East and remains strong right up to the modern era. So their experience of agriculture is interrupted and mixed with this other culture and corresponding diet, richer in meat. And since agriculture has been an accelerating process, cutting off 3000 years at the end means a whole lot more than at the beginning.

But pastoralism is more than an end of agriculture. It’s a cultural innovation with its own pressures, taking people in that culture down a different evolutionary path. This path leads to inbreeding, clannishness, honor culture and a warrior-like lifestyle. This is where I feel this book is lacking a conspicuous piece of the puzzle. It focuses too much on agriculture and gives the reader the impression that differences between populations are mainly about how long they’ve been farmers. They do mention it but mainly in the discussion of how early Indo-Europeans conquered the steppe with the edge of lactose tolerance. But if human nature has been shaped varying selective pressures of agriculture then the same should hold for pastoralists. (This type of human is described in some detail by blogger HBD Chick.)

Ashkenazi Intelligence

As a final example of just how fast the wheels of evolution are spinning, the authors present the rise of Ashkenazi intelligence. This would be a significant change in less than a millennia, which may be hard to believe in. But although speculative, it’s not a matter of belief, but of evidence and plausibility.

The Ashkenazi has existed as a distinct group of Jews since medieval times, but according to the authors their intellectual prominence is as late as the 1800s. Today their average IQ is estimated at 112-115. They have won more than 25 percent of all Nobel prices but make up only 0.17 percent of the world’s population. That is pretty mind-blowing. So how did it happen?

The cause, Cochran & Harpending suggest, is a well-known historical fact that most people simply don’t think of as relating to the theory of evolution,

“When persecution became a serious problem and the security required for long-distance travel no longer existed, the Ashkenazim increasingly specialized in one occupation, finance,

left open to them because of the Christian prohibition of usury. The majority of the Ashkenazim seem to have been moneylenders by 1100, and this pattern continued for several centuries. Such occupations (trade and finance) had high IQ demands, and we know of no other population that had such a large fraction of cognitively demanding jobs for an extended period.”

So they were effectively forced into high IQ professions and as success translated to more children this constituted a very strong and unique selective pressure that increased their intelligence. This sounds plausible, but while we know of their later achievements we don’t have any way to estimate their intelligence at the beginning of this period. The fact that they were sought after in the finance sector must mean that they had some smarts right from the start. As blogger Jewamongyou points out, in his overall positive review, religion may be an overlooked selective pressure, “It was specifically religious scholarship that made a man coveted as a husband.”

I have no idea of just how sexy Talmudic analysis was back then and to what extent those who excelled at it could extract resources to afford more children than others. But if this was the case then it certainly changes things a bit. It would weaken the case for superfast evolution, but the authors would still have a case for very fast ditto. How so?

Well, Ashkenazi Jews are a genetically distinct group with a number of serious genetic diseases. The popular explanation for this is that they at some point passed a bottleneck, a point when the population was so small that single individuals would leave their genetic mark on future generations. This has happened before but in this case the gene variants behind these diseases cluster together in regard to very specific functions of the brain and nervous system, DNA repair etc. A bottleneck would be random – no clusters.

Instead these clusters suggest that selection for something having to do with the brain – something that improves fitness – has taken place. And it would be recent selection as the genetic diseases are caused by homozygosity in these genes. Because in the long run adaptive genes with harmful side effects will be replaced by less harmful ones. So like haplotypes, harmfulness is another way of dating adaptations. And these diseases like for instance Tay-Sachs are among the worst imaginable.

So be it finance skills or perhaps religious fervor (that would surely give Richard Dawkins a stroke), there is still a case for some recent selection relating to intelligence.


Like I said in the beginning of this review, I think this book is among the top science books of recent years. It replaces the highly popular nonsense idea of halted evolution with a plausible theory of accelerating evolution. It provides a theory of how human nature has been shaped and differentiated into genetically distinct groups, not just by the physical environment, but increasingly by the social environment that various cultures represent, the most important factor being agriculture (or lack thereof). I still miss the pastoralist/clannish branch but maybe that will be in the next edition.

It would be easy to dismiss it had it not been so plausible and backed up by hard evidence. So the natural reaction from science journalists, pundits etc, the majority of whom still feel Stephen Jay Gould view is valid, is to ignore this book. Economist Tyler Cowen (who also doubted Homo sapiens interbreeding with Neanderthals despite of the common sense appeal of the idea) wrote a sweeping 14-line review, snubbing it without addressing anything specific, hardly more than a hit-and-run. One professor of biochemistry by the name of Larry Moran even tried to question the veracity of the Gould quote above, presumably hoping that fact checking is now a thing of the past. (Anthropologist John Hawks set him straight on that one).

I think this silence and these inferior attempts at dismissal speak volumes by themselves. If critics really had a good argument against Cochran & Harpending then surely they would use it. Given how the academic community tends to react to theories about heritability of intelligence and personality trait, innate group differences etc, I think they would use it much like a Neanderthal would use a club to bludgeon someone from an enemy tribe to death with. But don’t take my or anyone else’s word for it. It’s a short book, an easy read, and it only costs 10 dollars. If you’re a truly intellectually curious person, chances are you’ll get a good buzz from it. I certainly did.


Personality Regions: The Friendly Midwest, the Left Coast and the Wicked (Possibly Irish) Witch of the Northeast

March 18, 2014

I find the geographic distribution of personality traits to be a very interesting topic. It can give us insights on so many things, like human evolution, culture, politics etc. As I blogged about before here, psychologist Peter Rentfrow has noted that America is split in two halves that score high and low in neuroticism. And German psychologist Martin Obschonka has identified a personality profile that is more common in the region called the Mountain States or Interior West that correlates with entrepreneurial activity. Last year, Rentfrow  dug deeper into this with an interesting study which didn’t get as much attention as it deserved, so here is a little something to correct that mistake. The study combines large samples of Big Five test data (a total sample size of almost 1.6 million) and use so-called cluster analysis to identify psychological regions within America. To get a bird’s eye view of his findings, let’s start by showing some maps of the regions in question,

cluster 1

The “friendly and conventional” (FC) region in the middle and southern part of the country is characterized as being more extraverted, agreeable and conscientious, a little more emotionally stable (low neuroticism), but also much less open to experience than the national average.

cluster 2

The “relaxed and creative” (RC) region in the western part of the country is characterized above all by being very open to experience and emotionally stable, but also introverted and slightly less agreeable than the average.

cluster 3

And finally, the third region, “temperamental and uninhibited” (TU), located in the northeastern part of the country, from Maine down to West Virginia, is characterized as very emotionally unstable and low in conscientiousness while being moderately introverted and open to experience. I wonder if that’s how they describe themselves on dating sites : )

I think most people can recognize that these differences exist to some degree. I’ve never been to America myself, but a friend of mine was there on a business trip and he noted how friendly and pleasant the Midwesterners were. But when he mentioned that he was heading to California they shook their heads and one of them said, “you won’t like it, it’s all Mickey Mouse.” But how much of this can be validated by society level measures?

The PESH – Political, Economic, Social and Health – Correlates

Rentfrow & Co used a variety of so-called PESH variables, and some general demographic variables. They then calculated correlations between them and state prototypicality, that is to say the measure of how well a state fits the personality profile of its region. And here is what they came up with,

PESH Friendly & Conventional Relaxed & Creative Temperamental & Uninhibited
Women -0.22 -0.16 0.39*
Non-Whites -0.26t 0.52* -0.10
Median Age -0.18 -0.17 0.44*
Votes Republican 0.50* -0.35* -0.42*
Mainline Protestant 0.43* -0.49* -0.24*
Wealth -0.42* 0.35* 0.28*
Human Capital -0.50* 0.47* 0.26t
Innovation -0.42* 0.45* 0.22
Social Capital 0.34* -0.37* -0.14
Social Tolerance -0.38* 0.54* 0.08
Violent Crime -0.17 0.24t 0.01
Residential Mobility 0.12 0.27t -0.38*
Well-being -0.23* 0.47* -0.06
Health Behavior -0.46* 0.56* 0.15

The correlations marked with a * are at the 5 percent level and those marked “t” is at ten percent. As you can see the PESH variables in many ways show what we would expect from the personality profile of the regions. As the maps suggest, these regions are also fairly concentric – the geographical center is also the most prototypical part of the region and then states become gradually less so the further out from the center they are located. And given that the PESH correlations are based on prototypicality we would expect these variables to follow the same pattern. But we would expect wrong…

Things Fall Apart; the Center Cannot Hold

For instance, the FC region has the strongest positive correlation to political conservatism. This region has a core consisting of six states: Iowa, Minnesota, South Dakota, Nebraska, Missouri and Wisconsin. Rentfrow measured political conservatism as the tendency to vote Republican, by using a combination of percentages of votes for George W Bush in 2004 and John McCain in 2008. Now, I’m no statistician but if this measure correlates 0.50* to how typical a state is of the FC region I would think the most typical states would be the most Republican and then gradually less so in a concentric fashion. But looking at the results (in the link above) for 2008 we find that Obama actually won three core states – Iowa, Wisconsin and Minnesota. And the rest of the core states were not nearly as big victories for McCain as they were in the more remote and less typical states in the South.

It’s also worth mentioning that voting results are most likely affected by the personal style and charisma of the candidates as well as specific issues that may be important in one election and region but not the other. Gallup measure of political conservatism (and liberalism) more directly by simply asking people. In the core states 36.2-42.9 percent identify as politically conservative, which is slightly above the national average of 36.9. And again the southern states that fit the profile less well score much higher, with an interval of 41.8-47.9 percent. So again, we find the same reversed pattern where the PESH variable is the strongest in the states that are less typical of the region.

Same thing with religiousness, which was measured with mainline Protestant affiliation, a rather narrow measure the source of which I haven’t been able to retrieve. But since Gallup also tracks Protestant affiliation it should make a fairly good substitute. Again, it turns out we have a weak center and a strong periphery: the six core states have an average of 55.5 percent Protestants while the southern states average at 75.2 percent. No overlap between the core and peripheral states.

Further, the economic wealth measure is a composite which I can’t reconstruct because they don’t explain how it’s defined, but it’s based on things like GRP, median household income per capita, poverty rates etc.  With a correlation between this wealth measure and state prototypicality of -0.42* the implication is that the FC region is poor. I didn’t find median household per capita but I looked at the similar measure per capita income for the same year (2007).  While the six core states were slightly below the national average we again find that the southern states are way lower, again with no overlap between the richest southern state and the poorest core state. Or we can look at poverty rates, here from 2008 which is around the same time Rentfrows data are from,

Poverty by State

As you can see, it’s the same thing again: the core states have fairly little poverty but the less typical southern states have plenty. Yet again, there is no overlap.

A Flyover Bias?

Whether intentional or not, I find this highly misleading. I’m not sure what makes Rentfrow do this but I have a suspicion it may be a liberal bias against the “flyover states.” This bias can be seen when comedian/pundit Bill Maher recently interviewed actor Bruce Dern and dismissed Nebraska as old and poor. As I’ve shown in a previous post, Nebraska is not at all poor – unlike California which has the highest poverty rate in the country – and its median age, according to US Census 2010, is 36.2 years, one year higher than that of California but still below the national average. Since some 95 percent of personality and social psychologists are liberal and plenty admit to a rather hostile bias against conservatives, this shouldn’t come as a big surprise.

The Real FC Region: The Friendly Midwest

But let’s not throw out the baby with the bathwater. If we restrict this region to only the most typical states, the core, then we have something that looks homogeneous and concentric in terms of both personality, geography and society level correlates. They are east Midwesterners, they are indeed friendly and conventional, but in contrast to what the study suggested, they don’t stand out in any conspicuous way. They are moderately conservative and religious, they earn slightly less money than the average but they also have slightly less poverty and crime. And that’s pretty much what you’d expect from friendly and conventional people.

The RC Region: Creative and Relaxed, But Also Violent and Poor

It’s also easy to spot a similar but positive bias for the RC region. For instance, the correlation with violent crime is only slightly elevated at 0.24 at the ten percent level. But if we look at murder rates, we again see how peripheral and less typical states, like Idaho and Utah with really low murder rates, help keeping the region looking relatively peaceful. But of the most typical core states, California, Oregon, Nevada and Arizona, only Oregon is below average.

The correlation to wealth at 0.35* looks good and in line with what you might associate with a modern and open-minded region. As I mentioned above, the measure of wealth is complex and not explained in the article so again I looked at per capita income for 2007 (the year his index is based on) from the US Census. The core states are in the range 33K-41.6K dollars with an average of 37.5K, slightly below the national average of 38.6K, (although slightly above the FC core of 36K). The peripheral states have smaller incomes. I’ve already shown the poverty map above and that doesn’t help either. Somehow Rentfrow manages to make this region look wealthy but it seems to be an artifact of his calculations and perhaps wishful thinking.

The Real RC Region: The Left Coast

Again, this is not to say that the Relaxed & Creative region doesn’t exist, but like the FC region, it would become more homogeneous and meaningful if limited to a smaller area, in this case the coastal states. This is not just a matter of bias, but also how these calculations are made. I’m no statistician but Utah, although in the periphery is clearly marked on the map above as part of this region even though it is slightly above average in extraversion, agreeableness, conscientiousness while slightly lower in openness. It seems to fit this region by virtue of low neuroticism alone. And half the country is low in neuroticism. Have a look for yourselves at the eight main states of this region, traits listed in the order extraversion, agreeableness, conscientiousness, neuroticism and openness,

Oregon          30.9, 59.1, 45.8, 39.5, 58.8

Washington   30.6, 55.8, 45.0, 36.9, 56.6

California       51.4, 49.0, 43.2, 39.1, 65.0

Arizona          50.6, 46.6, 58.4, 38.1, 54.7

Nevada          46.4, 31.8, 55.8, 44.0, 61.3

New Mexico    32.4, 45.4, 58.5, 51.6, 62.0

Idaho             40.7, 52.9, 44.5, 44.2, 44.7

Utah               55.8, 69.4, 54.5, 30.4, 47.7

As you can see, Oregon and Washington are virtually identical, while California fits fairly well, even though the state is now just above average in extraversion, possibly due to migration. This would make a region of low to average extraversion, average to high agreeableness, low conscientiousness, low neuroticism and high openness. There may of course exist other personality regions with interesting correlates too, but right now I’m going with what Rentfrow generated. If we map the modified FC and RC regions along with the original TU region on a map of social and economic conservatism and liberalism created by statistician Andrew Gelman we see how these states stick together pretty good,


The Wicked Witch of the Northeast

When I saw how well this region fits into Gelman’s map I had a suspicion that Rentfrow got it right. But let’s check some correlates anyway. The biggest correlations are those of higher  median age and a larger female population. This is fairly easy to check since this region is practically identical to what the US Census Bureau defines as the Northeast Region. The personality version of the region has a core area consisting of Pennsylvania and Delaware in the south and every state further north up to Maine. Peripheral and less typical states are Maryland, Ohio, West Virginia and the more remotely located state of Texas. According to the Census 2010, their Northeast Region has the highest median age (39.2 years) and the lowest sex ratio (94.5 men per 100 women). The average of the core states is 95.0 and for the peripheral states it is 96.1, so that looks nice and concentric. In case you wonder about the populous states of New York and Texas, I haven’t weighted anything but their averages are 93.8 and 98.4 so that would confirm the pattern even more. As for median age, it’s a similar picture with a core average of exactly 40 years while and a peripheral average of 37.9 years.

Finally, the last big correlate, political view, again I use Gallup’s record on how many identify as politically conservative rather than the presidential elections of 2004 and 2008 for the reasons I stated above. In the core states there is an average of 31.3 percent who think of themselves as politically conservative, well below the national average of 36.8, and equally important, below the average of 38.0 for the peripheral states.

Still, these correlates are pretty neutral. Violent crime is less flattering so maybe the zero correlation to this personality region is kept low by some tricky calculations as in the RC region? A quick look at the murder stats show that the core states have 3.9 murders per 100K people as compared to the periphery which has 4.7, identical to the national average. That’s the reverse of what we’d expect but it’s only one metric that varies over time so all in all, this region looks like it makes some sense. And there is no suspicion of bias.

All in All, a Brave Effort

While I’ve been whining a lot about the liberal bias in this study, I still think this is a bold step in the right direction. After all, all behavioral traits are highly heritable so research about these regions and their behavioral correlates can only be described as human biodiversity research. And we don’t see too much of that, unless it’s unintentional. It would have been nice if Rentfrow had shown how racial/ethnic groups differ since most of the samples had that information. Such differences could explain, at least to some degree, why we have these regions. When you see the high levels of neuroticism in the Northeast, it’s hard not to think of the Irish who are plenty in that region. It would also have been great if they had measured dark traits too – I mean, this is America we are talking about : )

But I’ll get back to the issue on how these regions came to be in a later post. Right now I just wanted to introduce them – and of course to show what they really look like : )

TV Review: Girls (HBO) – Intellectuals without Intellects

January 29, 2014
Girls, nothing more, nothing less.

Girls. Nothing more, nothing less.

Critic’s Pet

For those of you who don’t have premium cable or get HBO through public TV as I do, the network has a show called Girls that has created a lot of publicity since its launch in 2012. It is a half hour show about a twenty something struggling writer in New York named Hannah Horvath. Her life revolves around her friends, work, boys, family, parties etc. There are no murders, no vampires, no spies or exotic locations (unless you think of New York as exotic). Just the everyday humdrum that we all share. This may sound painfully trivial, but most critics beg to differ,

“Lena Dunham’s [the creator of the show who also does the role of Hannah] much anticipated comedy about four single women in New York is worth all the fuss…” (Alessandra Stanley, NYT)

“Girls represents an exciting moment in television history because, like a handful of other shows (MTV’s ‘Awkward,’ most notably) it not only makes great use of the medium but has the creative guts to realign it for a new century and a new generation.” (David Wiegand, San Francisco Chronicle)

“It’s the distillation of a distinctive, incisive and brutally funny point of view and most importantly, it’s its own thing.” (Maureen Ryan, Huffington Post)

“Girls has potential to become a once-in-a-generation work that helps define a shared era.” (Hank Stuever, Washington Post)

“From the moment I saw the pilot of Girls, I was a goner, a convert.” (Emily Nussbaum, New York Magazine)

Millennials, SWPLs, Hipsters

A recurring word in the reviews is “generation.” Critics love to think of Girls as the voice of the so-called Millennial generation. But only the part of that generation which they think of as socially relevant – the White, liberal, urban people, sometimes referred to as SWPLs. This reminds me of Judith Rich Harris who I wrote about in my previous post, and her ideas of how we develop from children into adults. We don’t think that much about who we are as individuals but more about which social category we fit in. That social category becomes our tribe. Which explains why critics love the show – they are just cheering for their team, or in this case their junior team.

This tribalism is made painfully obvious when Hannah dates a Black guy but breaks up with him because he turns out to be a conservative. By that happy accident her world is again as White as that of any SWPLs watching the show, who can appreciate her effort to fraternize and be liberally inclusive while at the same time be ok with the fact that all their friends are White. The ethnic friend fantasy should never become real. At least not unless the friend in question has been properly whitewashed. Needless to say, SWPLs see racism everywhere.

The Genius Working at the Coffee Shop: From Modernity to Hipsterity

But in spite of the boring social and political correctness, Dunham does try to portray the Millennial SWPLs unique situation – with both sympathy and criticism – although she says little of why they are in their particular situation; it’s just some existential backdrop that works as a common denominator for the characters. Their world is one of economic recession, in sharp contrast to when they were kids, and it’s socially confused; no one seems certain of what is right and wrong or how to behave. This insecurity occasionally creates some much needed nervous energy to the show, but it’s ultimately unsatisfying because it lacks meaning and never leads to any conclusions. It’s just weird rather than interesting.

At any rate, the young SWPLs in Girls find it hard to navigate this increasingly confusing and harsh reality. But they aren’t mere victims, but also pretty full of themselves. Dunham’s self-criticism (because she must be counted as a SWPL herself) is evident: this tribe is deluded and narcissistic. That insight saves the show from complete disaster, but it doesn’t save it from a clear failure in my view. Dunham tries to go for brutal honesty, but the question of where this delusional and inflated sense of self-worth comes from is left glaringly unanswered.

My personal guess is that the unflattering aspects of SWPLs have emerged gradually over a long period of time. An early incarnation of this tribe arose from Enlightenment, the modern people as I call them for lack of a better word, who in the 1700s embraced the new thing called science and wanted to implement the same rationality to society. These radicals were smart, creative and principled – an elite in many respects. But they were also naïve and blank slatist, not understanding that they too constituted a social category or tribe and were governed by the same psychological mechanisms as other tribes. So the moderns allowed more or less anyone admission to their tribe thinking the newcomers were genuinely like themselves. And being financially successful and generous they could bring in a steady stream of new members most of whom weren’t as intelligent, creative or civic-minded as they were, but instead more traditionally tribal and hostile towards outsiders.

And so the modern tribe became today’s SWPLs. They live in gentrified White neighborhoods (if they can afford it), and wear clothes that scream gay casual friday to mark their tribal distinctiveness. They get their degrees in sociology, arts or some other subject that doesn’t require too much brainpower. They eat organic food, recycle and perform all their other rituals but have much less of the inner qualities of their original modern ancestors. And this dumbing down, I believe, is the unique situation that Dunham doesn’t want to look into too carefully – the growing gap between an intellectual, elitist self-image and the horrifying reality of being a mundane, average person.

The Inexplicable Tragedy of Regression to the Mean

A phenomenon related to this decline is that of regression to the mean. This refers to the way intelligence (and probably a lot of similar traits) is inherited. Children don’t just inherit the average of their parent’s respective intelligence. Instead they’ll average somewhere between their parent’s level and the average of the larger population they belong to. So two SWPLs with IQs of 120 will have children whose average IQs might be around 110.  And being blank slatists, they can’t just accept this as a fact of life but will be disappointed or blame themselves or try to convince themselves that their little Hannah, working at the coffee shop is just as smart as they are. It’s just the economy, or all the existential issues that this new and highly complicated world entails. Or it could be a psychological problem. SWPLs have a lot of psychiatric conditions that supposedly make them look interesting rather than just dumb. (In Hannah Horvath’s case it’s OCD.) Because if all that’s wrong with her is an IQ of 105 then she is just like a regular White girl who listens to Taylor Swift. And Mom doesn’t like Taylor Swift, partly because her fans are the wrong kind of White people, and partly because Taylor Swift has talent and intelligence, and in the back of her head she knows that her daughter has neither.

The Modern Storyteller Fail

While you could make a decent show about a plain Jane and her equally plain friends, Girls also suffers from the modern kind of story-telling that I’ve mentioned in a previous post which fails to recognize that good meaningful stories have a basic archetypal structure – good versus evil and such. Instead Dunham just makes up little sketches and when she has enough to fill half an hour that becomes an episode. I’m in no way exaggerating when I say that these episodes can be seen in any random order. There is no beginning, no end, no one is really good and no one is really bad, no strong conflicts. It’s just one trivial event after another.

The critics don’t mind this because they are the small clique who love the modern nonsensical crap, and they also look at Hannah and think their deadbeat daughter really is special after all. The rest, I imagine, look at Dunham’s perky boobs that the camera lingers on for long periods of time in every single episode. One critic, Tim Molloy, had the audacity to ask Dunham about the purpose of all the nudity (more than I have ever seen in a TV show) and got this vitriolic response from Dunham,

Yeah. It’s because it’s a realistic expression of what it’s like to be alive, I think, and I totally get it. If you are not into me, that’s your problem…

On top of this, producer Jenni Konner asked Molloy why he thought he could talk to a woman that way, and producer Judd Apatow wondered how things would go with Molloy’s girlfriend after his misogynistic question. Which supports my idea that the gap between self-image and actual performance among the SWPLs has been growing for a long time and is not a problem exclusive to the Millennials.

But ultimately, boobs, even real and perky ones, will not keep the audience interested. Only storytelling can do that. That’s why no one really cares about the films from the 1960s and 1970s. And this is why no one really cares about Girls either,

Viewers (in millions) of the latest ten episodes of some HBO shows.

Viewers (in millions) of the latest ten episodes of some HBO shows.

This lack of interest is also interesting in that it shows how little people care about what these SWPL critics think. In spite of all the superlatives from all the big media, the Emmy, Golden Globe and BAFTA awards etc, the ratings haven’t even momentarily risen above the abysmal level that they been on since the show started. That’s gotta hurt.

I’m thinking if Hannah hadn’t wasted her time on that sociology degree, and practised really hard she might have been able to be a backup singer for Taylor Swift,

The Sour Grapes of Pisa

November 28, 2013
Still standing.

Still standing.


The new Pisa 2012 will be released on Tuesday, which for those who are unfamiliar with it is a recurrent survey on the performance of schoolchildren from all over the world. The winners in this survey tend to be the same over the years: various Chinese populations (Shanghai, Hong Kong and Singapore), Finland, Canada, Australia, Japan and South Korea.

A high rank is generally interpreted as the result of a good policy and a low rank will usually create headlines demanding reforms.

The Pisa Hall of Shame

At the bottom of the order we find poor and often Muslim countries like Kyrgyzstan, Azerbaijan, Peru, Panama, Qatar and Albania. But besides rich countries at the top and poor at the bottom, there is also the phenomenon of over- and underachievers, poor countries whose children perform well and vice versa. This measure is more interesting since it indicates a failed education policy or other factors that may have been overlooked.

Some of the worst underachievers (excluding tax havens and small oil countries) are USA, UK, Austria, Germany, Denmark and Sweden. How do people in these countries respond to the results of the survey?

America: Self-Criticism and Fear of China

When commenting on the results American media have mainly been comparing themselves with China and been surprisingly self-critical, as for instance from Stacie Nevadomski in the Huff Post shows,

“The truth, the real news, is that there is no news here. These results should be no surprise. The long slide in American student performance relative to global peers has been a constant drumbeat, paralleling the domestic failures of our schools shown in Waiting for ‘Superman’.”

Or education secretary Arne Duncan,

“The findings, I have to admit, show that the United States needs to urgently accelerate student learning to try to remain competitive in the knowledge economy of the 21st century.”

James Fallows in The Atlantic agrees but adds that that Shanghai, the winner of the Pisa 2009, isn’t representative of the whole of China – which is correct; neither is Hong Kong or Singapore who also rank at the very top. These are all elite populations. America scored better against the other Chinese regions of Macao and Taiwan and it would probably do even better compared to all of China. Although those who are familiar with unpublished results from other parts of China claim they are very respectable.

Regardless of how well America compares to China, it’s still a fact that 13 countries score better than America and all have significantly lower GDP per capita. Maybe that would be a more constructive focus.

European Skepticism

A more disturbing reaction has come from some of the European underachievers. Recently, the largest newspaper in Sweden, Dagens Nyheter (Today’s News), has featured an article about the upcoming Pisa 2012, with the headline “Several Countries Cheated with School Results”, suggesting that countries like Italy, Slovenia and the United Arab Emirates has falsified their results. The article is based on an unpublished study by German and Canadian sociology professors Jörg Blasius and Victor Thiessen. “The result means that the credibility of the Pisa survey can be questioned,” says Blasius.

This story is also getting attention in Denmark, another underachiever, where one of the major papers, Berlingske Tidende has an article about it. The article includes other criticism as well, mainly that of Svend Kreiner, a statistics professor at the University of Copenhagen. Kreiner has analysed earlier results. He is critical of how a lot of questions are omitted for some countries but included for others. He claims the methods of scoring are so arbitrary Denmark could be ranked second or 42th depending on arbitrary tweaks in the evaluation. In the article, president of the Danish Teachers Association, Anders Bondo Christensen, says it’s time to scrap the survey altogether.

In the UK (also an underachiever), there is a similar discussion on the TES educational community. In an article, TES’s William Stewart writes,

“Politicians worldwide, such as England’s education secretary Michael Gove, have based their case for sweeping, controversial reforms on the fact that their countries’ Pisa rankings have “plummeted”. Meanwhile, top-ranked success stories such as Finland have become international bywords for educational excellence, with other ambitious countries queuing up to see how they have managed it.”


“But what if there are “serious problems” with the Pisa data? What if the statistical techniques used to compile it are “utterly wrong” and based on a ‘profound conceptual error’? Suppose the whole idea of being able to accurately rank such diverse education systems is ‘meaningless’, ‘madness’?”

Sour Grapes?

However, fact is the alleged cheating is only concerned with follow-up questions to principals that have been found to be largely identical in many cases. It doesn’t concern the performance of the schoolchildren. It hasn’t even been established if it is actual fraud designed to make the countries in question look better or if it’s just a matter of laziness or even the fact that some principals are heads of more than one school.

Also for Kreiner’s analysis, Pisa’s own statistician, Andreas Schleicher, questions it on grounds that Kreiner is using a very small part of the data in spite of having access to all of it. He also questions the methods Kreiner used and suggests that they our outdated. As a response to alleged cherry picking, Kreiner replies by accusing Pisa/Schleicher of doing similar things. To me, that sort of rhetoric doesn’t exactly increase his credibility.

It’s not easy for a non-expert to make any sense of this, but I have to say that there is something disconcerting with the fact that Svend Kreiner is being awarded a prize for his critique while no one in Danish press is asking the questions that Schleicher’s comment raises. Is everyone in Denmark so familiar with statistics that it’s a non-issue? And big headlines about cheating even though it hasn’t been established?

Alternative Explanations

Rather than blaming the statistics, there could be other things behind why some countries underachieve. The most obvious thing would be changes in national IQs.

The Pisa survey (and similar tests) correlates strongly to intelligence tests; so much in fact that it actually is an intelligence test although it’s rarely referred to as such. This explains a lot of the rank order, because we know that intelligence is highly heritable and resistant to external forces – like education policies. Smart people like the Chinese are going to rank at the top and less smart people like Ugandans are going to be somewhere at the bottom. This is also a reason to be skeptical of the European sour grapes skepticism I mentioned earlier. If there was something seriously wrong with the Pisa it wouldn’t correlate so much with similar tests.

But intelligence alone can’t explain under- and overachievers. If we look at the latest national IQ estimates, the underachievers score like this,

Austria 99, UK 99.1, USA 97.5, Germany 98.8, Denmark 97.2, Sweden 98.6,

and, the three overachievers score like this,

Finland 100.9, Estonia 99.7 and Poland 96.1.

There is not much difference; the averages for these groups are 98.4 and 98.9. But maybe this snapshot disguises a trend in which underachievers are on the way down and vice versa?


I would suggest that this is the case, and that the reason for this is immigration. East Asian countries don’t have much immigration to speak of, but in Europe there has been a varying influx of people in recent years, especially from Muslim countries. The national IQs in these countries are usually around 85 so Western countries that receive a lot of these immigrants should see a larger decline in national IQ averages than other countries. If we look at PEW’s survey of Muslims in Europe, we can make a comparison between over- and underachievers. The most striking overachievers are Estonia, Poland and Finland, countries that all have extremely small Muslim minorities making up 0.1, 0.1 and 0.8 percent of the population respectively. Compare that with the figures for the underachievers Austria 5.7, UK 4.6, Denmark 4.1, Germany 5.0 and Sweden 4.9. Many immigrants are very young children who will take the Pisa survey in years to come or are taking it now but have yet to become adults and have an effect on the economy. Since the Pisa survey is just an intelligence test for children they simply reflect the influx of young and low IQ people. Underachievers have a larger influx so they score worse than you’d expect from the current national IQs and wealth because the effects on these metrics will kick in some years in the future. And overachievers are just maintaining their national IQs and consequently rising in rank since the rank order is relative.

So the way to improve the scores is not to reform the education system but to change the immigration policy.

So, Any Bets for Tuesday?

If I was to guess I would base it solely on national IQs, immigration and introversion scores, although that last one is a bit speculative. This would lead me to the safe bet that East Asians will stay at the top and no real low IQ countries will surprise anyone with a high rank. Judging by the immigration projections from PEW, Eastern Europe looks like it could be on the rise, or at least maintaining positions, although Russia and Bulgaria look problematic. The real winners here are probably small to medium sized countries that are relatively stable, like Estonia, Poland, Slovenia, Croatia and Hungary. Western Europe will show a downward trend, especially for countries that are increasing their share of the Muslim population from an already high level, like the UK, Austria, Sweden, Belgium and France.

But whatever happens, you can be certain that many people in the underachieving countries will keep blaming the test. Because changing your view on human nature and society is hard work and shooting the messenger is easy.

For more details about the Pisa survey, check out Steve Sailers blog which features several interesting posts on this subject.

The IQ Breaking Point – How Civilized Society is Maintained or Lost

September 24, 2013
West Virgina at IQ 96. Life just below the breaking point.

West Virgina at IQ 96. Life just below the breaking point.

It’s a well-known fact that intelligence corresponds to various kinds of life outcomes at the individual level, such as income, education, drug abuse, criminality etc. A little less known is the fact that national average IQs correspond to similar outcomes on the national level. This has been shown by among others psychologists Richard Lynn and Tatu Vanhanen, who have found staggering correlations between national IQ and things like health, education, income, crime, corruption, democracy.  To give you a rough idea, here are some of the findings,

Educational measures like TIMSS and PISA correlate 0.79-0.92

Number of scientists and engineers correlate 0.61

Measures of  per capita national income (GDP, GNP, GNI) correlate 0.51-0.89

Poverty and unemployment: -0.63 and -0.76 respectively

Crime in the form of homicide, assault and rape: -0.21 to -0.82 with distinctly higher correlations for the more accurate measure of homicide

Corruption: -0.27 to -0.68, all but one study above -0.54

Democracy: 20 of 22 measures show correlations around 0.60

Life expectancy: 0.51-0.82, expect for one study that found a negative correlation (possibly a typo)

Anyway, you get the picture. All the basic requirements for modern civilization – democracy, education, wealth, health and (lack of) crime and corruption – are strongly related to national IQs.

IQ 97: The Breaking Point

Seeing these correlations, it’s easy to assume that national IQ averages would correspond to specific degrees of development – that South Korea with an IQ of 107 would be much more civilized than Australia at 98, which in turn would be fairly similar to Russia or some other country at 97. But looking at the stats this is far from the case. Instead it seems like there is a point, somewhere around 97, above which a modern civilization can be maintained and below which things abruptly begin to fall apart. To illustrate this I’ll review some of the correlations mentioned above.

GDP (PPP) Per Capita

You can’t have civilization without money. It pays for education, healthcare, police etc. If we use the national IQs from, who appear to have the updated version of Lynn and Vanhanen’s data set (correct me if I’m wrong), and compare them with the GDP/PPP that takes local purchase power into account, we find clear support for the idea of a breaking point at 97 or thereabout. If we exclude oil nations, the top 20 with populations over one million, according to Wikipedia/IMF are,

Singapore, Hong Kong, USA, Switzerland, Canada, Australia, Austria, Netherlands, Ireland, Sweden, Germany, Taiwan, Belgium, Denmark, UK, Finland, Japan, France, Israel and South Korea.

In these top 20, there are nine nations in the 98-99 range, but only two countries below 98 – Israel and Ireland. Both can be partly explained by the fact that they receive plenty of financial aid from USA and the EU respectively. And it’s unlikely that Ireland will stay in the top 20 given its huge public debt and very high unemployment.

And if we look at more “normal” countries with IQs below 98, those without oil or rich friends, we find Slovenia with an IQ of 96 at 24th place, then Cyprus with an IQ of 91 at 26th, and Greece with an IQ of 92 at 27th. And Greece may well have lost this spot as I write this. So at 98 there are plenty of wealthy countries, but at 97 it suddenly seems to evaporate. And this isn’t just about money; if we turn to corruption we find a very similar picture.


According to the Corruptions Perceptions Index (CPI), the top 20 countries (again with a population of over one million) most free of corruption are,

Denmark, Finland, New Zealand, Sweden, Singapore, Switzerland, Australia, Norway, Canada, Netherlands, Germany, Hong Kong, Belgium, Japan, UK, US, Chile, Uruguay, France, Austria and Ireland.

Strictly speaking this is 21 nations since Austria and Ireland share the 20th spot and it seemed a bit random to exclude the one or the other. Anyway, we find 10 countries in the 98-99 range – including the top 4 and 6 in the top 10. The only three countries below 98 are Ireland (see above), Chile with an IQ of 90 and Uruguay with an IQ of 96. Again we see how everything is fine at 98, but at 97 and below things go south.


Turning to crime, so to speak, we find the top 20 countries with the lowest homicide rates (and more than one million inhabitants) according to Wikipedia/UNODC are,

Singapore, Hong Kong, Japan, Bahrain, Norway, Austria, Oman, Slovenia, Switzerland, United Arab Emirates, Spain, Germany, Qatar, Denmark, Italy, New Zealand, China, Saudi Arabia, Sweden, Australia.

This clearly breaks the pattern since we have five nations in the 98-99 range and just as many low-IQ nations, all from the Arab world. However, if we are looking for a point at which modern civilization begins to crumble, then we shouldn’t look at dictatorships at all. They can keep the murder rate low with social control and oppression, but at in doing so they disqualify themselves as candidates for civilized societies. So if we limit our sample to at least somewhat civilized countries we get a different picture. This is of course a rather subjective method but I think we can all agree that the countries above can’t be a part of it. I have included Hong Kong but excluded China so that’s where I draw the admittedly somewhat arbitrary line. The top 20 at least moderately civilized countries with the lowest homicide rates then become,

Singapore, Hong Kong, Japan, Norway, Austria, Slovenia, Switzerland, Spain, Germany, Denmark, Italy, New Zealand, Sweden, Australia, Poland, France, Netherlands, Ireland, UK, Portugal and Serbia (IQ 89).

Again, this became 21 countries because the two last share the 20th place. We find nine nations in the range 98-99 and four countries below that. The anomaly here is Slovenia at 6th place, a country that was also a mild anomaly with 24th on the GDP per capita list. But overall, this confirms the previous findings in that there are plenty nations in the 98-99 range but at 97 or less they are few and nowhere near the top of the list.

Indeed looking at where the sub-98 countries are on these lists we find that they made places 9 and 18 on the GDP list; 17, 18 and 20 on the corruption list and 6, 18, 20, 20 on the homicide list. So they are not only few but mainly at the bottom.


Finally, let’s have a look at the Economist Democracy Index for 2012. The top 20 nations with more than a million people are as follows,

Norway, Sweden, Denmark, New Zealand, Australia, Switzerland, Canada, Finland, Netherlands, Austria, Ireland, Germany, UK, Czech Republic, Uruguay, Mauritius, South Korea, USA, Costa Rica and Japan.

As you might expect by now, around half of these, nine, are in the 98-99 range whereas only four are below that. Again, Ireland is breaking the pattern, as are Uruguay, Mauritius and Costa Rica with IQs of 90 and 89 respectively. We also find that four of the top five have 98 IQs whereas those below this level are at 11, 15, 16 and 19.

An Index of Civilization

So what happens if we add these measures up? I did this by scoring point in reversed rank order starting from 100 for each measure to create an civilization index. A statistician can probably come up with something better, but it will give a rough idea of the overall picture. The chart below shows the result,


As expected, there is a general pattern of higher degrees of civilization as intelligence increases. But the most civilized countries are all in a cluster with IQs between 98 and 101. Below 98 the level drops dramatically as can be seen by the lack of dots in the upper left part of the chart. The only distinct anomaly left is Ireland which scores 360 points for the 12th spot and, less striking, Slovenia at 20th with 335. Or, given what I’ve mentioned about the Irish economy, it may be Slovenia that is the more genuine anomaly here – clearly not as horrible as it’s portrayed in the Hostel movies. At any rate, combining these factors eliminates anomalies and further strengthens the support for an idea of a breaking point at approximately 97.


I haven’t found any official statistics for state-level IQs in America. There are however some estimates made by the Audacious Epigone, based on the NAEP scores, and educational measures are strongly correlated with IQs. He has also set the American average at 98 which matches the figures I’ve used above. If we exclude District of Columbia, which is common in these cases since it’s full of government money and temporary inhabitants, the top 20 GDP per capita (I haven’t found any PPP numbers), are as follows,

Delaware, Alaska, Connecticut, Wyoming, Massachusetts, New York, New Jersey, Virginia, Washington, Colorado, California, Maryland, Minnesota, Illinois, South Dakota, Nebraska, Hawaii, Iowa, North Dakota and Louisiana.

As in all the previous calculations, we find that states in the 98-99 make up roughly half of the sample, once more dominating the top positions – 1, 2, 4, 6, 8. Below this level we find only three states, California with an IQ of 95 at 11th position and Hawaii with an IQ of 96 at 17th and Louisiana with an IQ of 96 at 20th place. There may be some explanations for these anomalies although I’m not that familiar with American politics. But it seems clear that California is in at least as much trouble as Ireland.

Conclusions and Implications

I’m not going to say that every conceivable measure on every conceivable level will show this pattern, but overall I think we have to conclude the existence of an IQ breaking point somewhere close to 97, at which we see drastically different outcomes depending on whether a country is above or below this level. A country can of course still fail above this point, like Italy and most likely North Korea. But a national IQ above 97 represent a necessary, but not sufficient, condition for success.

One implication, if this turns out to be true, is that immigration could pose a serious threat to the West, especially those countries and regions that are closest to the breaking point. The sad part is that since everything is going so well at 98 they may dismiss this risk. This is especially true for those countries and states who are right at 98 and whose immigrants have the lowest IQs, for instance France or Texas. As for California that state has now clearly passed the breaking point, it will be interesting to see if they will break the pattern. I suspect they won’t, given that the few countries that do fairly well below 98 (Ireland, Slovenia, Uruguay etc) are all small and lacking in diversity, which is the opposite of California.

It’s fully possible that someone else already has noted this breaking point, but since I hadn’t heard of it before and it didn’t seem like common knowledge, I figured it was worth sharing. I have no idea why 97 would be a magic number; maybe it’s just something in the human condition. I’ll be updating this article whenever I find any relevant information on this.

Human Biodiversity – Things You Are Not Supposed to Know About

June 5, 2013

As someone interested in personality, I find the field known as Human Biodiversity (HBD) to be fascinating. For those who are unfamiliar with it, HBD is a field in which controversial issues regarding human nature are explored, debated, and above all, brought out into the open. HBD is about things ordinary scientists and journalist would prefer you didn’t know about. Plausible but suppressed facts and theories on things like how inbreeding has turned people in the Muslim world more “tribal” than others, resulting in corruption and violence and low national IQs. Or how homosexuality actually has a very low heritability and may be caused by a pathogen. Or how low intelligence may be a greater health problem than overweight, how ethnic groups may differ in behavior for genetic reasons and how this affects society. And so on.

Often discounted as amateurs, racists, sexists etc, HBDers are a mixed bunch of people who pursue these issues with little or no funds at their disposal. They are rarely prominent experts in their fields – because that would no doubt get them fired – but they have plenty of education and intelligence, and I think any honest person who listens to what they have to say will have to agree that they offer more than just shock value. Human nature includes our dark and problematic sides too. A true scientist delves into that as well, because he holds the truth above all other considerations. In that sense HBD is more science than a lot of what passes as science in Academia.

There is no official introduction to HBD as yet, but as a next best thing you can read Jayman’s 100th post  published today, which offers a well-written overview of the field.

The Connection Between Tipping and Corruption (and Tribalism)

May 17, 2013

TippingMagnus Thor Torfason, professor of Harvard Business School, and colleagues have made an interesting study on tipping and corruption, published in the journal Social Psychology and Personality Science (for a larger image click on this link). They found that countries in which tipping is common are more corrupt than others, according to the Corruptions Perceptions Index (CPI). The raw correlation is a whopping 0.6, but since other factors affect corruption these must be controlled for in order to see if there is some new unique effect linked to tipping. So they controlled for other relevant factors, namely Individualism Index, Power Distance Index, GDP per capita, income inequality, homicide rates, civil liberty restrictions, highest marginal tax rate, minimum wage and public funding of health care. When all these are taken into account there is still a unique influence linked to tipping, about half the size of GDP per capita (which btw is a rough proxy of intelligence which for some reason wasn’t included).

Two Kinds of Tipping

So what lies behind this mysterious tipping effect? Torfason’s hypothesis is that it has to do with temporal focus. It’s tipping in order to influence future behavior that he thinks is linked to corruption. Not all tipping has this temporal focus; some people will tip simply as a way of saying thanks. It’s the others, those who tip in an attempt to manipulate the person they tip, that are thinking in the same way as a corrupt person and that supposedly makes up the link between tipping and corruption.

In order to test this hypothesis Torfason & Co made secondary study comparing two countries equal in the prevalence of tipping but very different in levels of corruption – Canada and India. The participants were asked to rate how much they agreed or disagreed with statements like “I want to motivate this person to give me good service in the future.” Agreeing with this statement would obviously indicate a temporal focus on future events. They then filled in a bribery attitude measure form, judging actions like for instance whether it’s ok to bribe a policeman to avoid getting a traffic ticket.

The result clearly indicated that Indians were thinking about tipping with a temporal focus on future rewards to larger extent than the Canadians, and at the same time they were more accepting of corruption. The researchers also also crunched the numbers to ensure that the temporal focus did in fact mediate the link between tipping and attitude to corruption.

Further exploring this issue Torfason writes,

If cross-cultural differences in attitudes toward bribery are driven by temporal focus, it seems reasonable to assume that differences in temporal focus, at the individual level, will relate to bribery attitudes in the same way, even for citizens of the same country.”

To test this idea, a third study was conducted, this time using only American participants. Unfortunately, Torfason didn’t just measure temporal focus and attitude to corruption, instead he primed the participants by letting half read an article titled ‘‘Basic Tips on Tipping: Encouraging Good Service’’ and the other half an article titled “Basic Tips on Tipping: Rewarding Good Service.” I’m not sure why they did this. Perhaps they were afraid of getting to little variance from a rather small convenience sample, or maybe it was the political implications – after all, priming conceals the whole issue of whether this temporal focus (read manipulation) is a matter of personality or not. Since all known personality traits are highly inheritable, such a result would leave no doubt that Indians are inherently more manipulative than Canadians.

Corruption Is Caused by Something Much Worse than Low Intelligence

Still, even if Torfason doesn’t want to spell it out, it’s pretty obvious that this is at least in part a matter of personality. Because tipping someone in the hope that they in the future will behave in a certain manner that benefits you is by definition a form of manipulation. And manipulative behavior is an aspect of Machiavellism, a well-documented personality trait characterized by manipulative and exploitive interpersonal behavior.

Although more research is needed, this certainly adds a piece to the puzzle of personality and corruption that I’ve been discussing in a previous post. In that post I found modest correlations between nation-level corruption and Extraversion, Neuroticism and Psychoticism. These correlations suggests that the corrupt person is not just someone with low intelligence who fails to understand the long-term gains of avoiding corruption, a theory proposed by German economist Niklas Potrafke. Torfason adds further evidence linking corruption to Psychoticism, or one of its aspects, Machiavellism, a trait that along with Psychopathy and Narcissism make up the so-called Dark Triad of traits often found in criminals. Far from Potrafkes image of the corrupt person as a pretty harmless person who doesn’t quite understand what he’s doing, Torfason’s research suggests a much more sinister and calculating person.

Torfason’s  – unwanted? – discovery is for that reason more in line with hbd* chick’s theory of how high corruption levels are linked to clan-based societies. In these societies evolution has favored those with gene variants for familial altruism, creating an overly friendly attitude to relatives and an equally hostile attitude towards outsiders. This hostility, Torfason’s study suggests, goes beyond being wary of strangers or putting your own children before others. It takes the form of manipulative behavior towards outsiders. And the government is one such outsider which then explains corruption.

What Can Be Done About It?

You rarely encounter research of this kind so I can understand that Torfason is cautious, kudos to him for even going there. I’ve always liked India and I think it has loads of potential. The country actually scores higher than many other countries on Openness and Agreeableness suggesting that they have the capacity to change. But having an accumulation of anti-social traits in your population is not a joke. If India and other countries with this problem want to change, they need to face reality in order to find the solutions. There are ways of reducing genes for familial altruism, anti-social behavior or any other behavioral traits. Sadly, the PC establishment will stigmatize anyone who tries to discuss this issue, since mentioning genetic differences between peoples is Nazism, and all you really have to do is give children books to read, right? It seems the people calling themselves progressive today represent the worst kind of conservatism – the let’s-not-change-anything-that-hurts-my-feelings variety.

Extraversion, Still Relevant

That’s not to say that anti-social traits are the only possible link to tribalism and corruption. I’m still holding on to my Extraversion hypothesis, given how obviously very introverted countries like Finland and Japan have so little corruption, and, as I mentioned in my previous post, Extraversion correlates some -0.30 with corruption in Western Europe. It’s also worth mentioning that people who are overly honest and open towards strangers, tend to have Asperger-like personalities, which are characterized among other things by a very strong introversion. And anyone who has been a student has probably noticed how enthusiastic highly extraverted people are about the tribal rituals of student life, initiations and the like. Hopefully there will be some research on this too sometime in the future.

(As a fun fact, the combination of tribalism, inbreeding and anti-social attitudes is nothing new. It has been described in popular culture many times. In American films, such as for instance Deliverance (1972) featuring Burt Reynolds, the isolated inhabitants of the Appalachians are often depicted as inbred and possessing a mind-boggling cruelty towards strangers. For some reason it’s ok to exaggerate and make fun of that, probably because they’re white. But it seems political correctness draws the line somewhere between the Appalachians and Morocco.)

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