Human Biodiversity, Psychometrics, and Evolutionary Psychology

That ancient question - what accounts for the wealth of nations? Don't tax yourself with Adam Smith or Landes. It's mostly intelligence, with a small dash of social cohesion.

Health Inequalities: Why do Latinos Live Longer than Whites?

Is summarized below for each state (source) – and it shows some very interesting patterns.


The average life expectancy of Asian-Americans (86.5 years) is 4 years higher than in Japan – the longest-lived big East Asian country. Taiwan and South Korea are at around 80; Hong Kong is at 83; Singapore is at 81. The other East Asian countries aren’t developed yet, so there isn’t much point in comparison.

The LE of Latinos is 82.8, which is 6 years more than in Mexico, 4 years more than in the longest-lived Latin American countries and even a year higher than in Spain (one of the longest-lived European countries). This is despite the fact that obesity rates among Hispanics in the US is very high – higher than those of whites.

On average American whites can expect to live to just 78.9 – the same as in Chile or Denmark (the shortest-lived Western European country). A most curious anomaly, given their higher SES and lower obesity rates relative to Hispanics.

Blacks can expect to live around 74.2 years. This is far higher than in any African country, but the comparison is flawed for obvious reasons. It is however pretty close to the life expectancy in predominantly mulatto Caribbean countries like Jamaica (73 years) or the Bahamas (75 years), countries which are more suitable for comparison.

Native Americans average 76.9 years, though they are spread out all across the spectrum – ranging from 80 in California, to 69 in Montana.

Some questions and issues to ponder:

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The Racists Aren’t Where the Prof Said They’d Be

A few months late, but worth posting anyway.

racial-tolerance-map-hk-fix (from Washington Post)

The results are based on the latest “wave” of the World Values Survey, a very interesting project that tracks sociological data across countries – and which I will likely post more about in the future.

Interesting observations:

(1) The West in general is the world’s least “racist”* region – regardless of what some ideologues wish to argue. Regarding the US in particular, even many European countries – widely considered to be more “liberal” – would balk at the affirmative action policies in place there.

(2) France is a curious exception, though not perhaps altogether surprising in light of the popularity of the National Front. A far right party enjoying the support of about a third of the population is, indeed, pretty unique for a developed country. Is it something specific about the French? Or have they just had more opportunities to get fed up with multi-culturalism in general?

(3) Rates of consanguineous marriage (and associated clannishness) all correlate closely with rates of “racism.” Compare the map above with the map below of the rate of consanguineous marriage – considering the inherent vagueness of the questions asked in the WVS, the fact that the territories of the former Caliphate, India, and Indonesia are clearly delineated is nothing short of remarkable.

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Only 15% of Scandinavian Pupils can do Basic Fractions

Further to my post on the remarkable failure of Scandinavian education systems to develop their students to anywhere near the levels indicated by their IQ potentials, a professor of mathematics at a Wisconsin university sent me data on the percentage of respondents in the TIMSS who gave the correct answer to the following question:

Which shows a correct method for finding 1/3 – 1/4?

A (1 – 1)/ (4 – 3)
B 1/ (4 – 3)
C (3 – 4)/ (3*4)
D (4 – 3)/ (3*4)

Below are the results. Do bear in mind that these are 8th graders we are talking about.

Korea 2.7 6.9 4.2 86
Singapore 4.8 5.5 6.5 83.1
Taipei 2.9 7.7 7 82
Hong Kong 4 8.7 10 77
Japan 15.4 11.1 8.2 65.3
Russia 12.3 18.8 4.8 62.8
Average 25.4 26 9.4 37.1
US 32.5 26.1 10.7 29.1
Finland 42.3 29.5 8.7 16.1
Sweden 14.4
Chile 11.7

Finally, an international ratings list on which those smarmy, goody-goody Scandinavians don’t come on top! They barely do better than Chile, a country that got 421 (equiv. IQ ~88) in the PISA 2009 survey. Here is what he has to say on the matter:

One interesting fact is that among the 42 countries which tested 8th grade students, Finland had the highest percent of students who picked answer A and the third lowest percent correct. Chile had 11.7 correct and Sweden had 14.4 percent correct. The Finnish result is likely a surprise to the people who have praised the Finnish school system for their results on another international test, PISA. However university and technical college mathematics faculty in Finland will not be surprised. See [this] article signed by over 200 of them.

Anybody who suggests the progressive/neoliberal education policies of the Scandinavian countries are worthy of emulation should be presented with these figures and laughed out of the room.

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Preliminary Thoughts on TIMSS/PIRLS 2012

I had been meaning to post about this for a long time. Better late than never, I suppose.

The TIMSS and PIRLS are international assessments of academic ability in math, science and literacy that are conducted once every four years. They are similar to the PISA tests, although the latter are less purely academically focused and more a test of pure IQ.

Here are the results of TIMSS/PIRLS (h/t North Asian). And here are the results of PISA from 2009 for comparison.

As can be expected, they are highly correlated (r > 0.8 to be precise). This however makes the few differences all the more interesting. The gap between the East Asian countries and European countries, though substantial in PISA, is significantly greater in TIMSS/PIRLS. And most strikingly, both Russia and Israel go from being laggards in the OECD group to being at the forefront of the class.

  Math (PISA) Math (TIMSS)
Korea 539 613
Sweden 494 484
Russia 468 539
Israel 447 516

From performing more poorly than Turkey in the PISA reading test, Russia soars to take second global position in the PIRLS.

  Reading (PISA) Reading (PIRLS)
HK 533 571
Sweden 497 542
Russia 459 568
Israel 474 541

Meanwhile, some European countries, especially Sweden and Norway, plummet quite substantially.

What explains all this?

There are two possibilities. First, the TIMSS/PIRLS tests may have poorer samples than the PISA. For instance, we know from the latter that Moscow has a 10-point IQ lead over the rest of the country. If Muscovite pupils are over-sampled, then it’s quite feasible for the consequent result to be closer to say Hong Kong or Korea than to Greece or Turkey.

However, a second possibility is that the PISA-TIMSS/PIRLS gap is a proxy for differences in the quality of educational systems. It is more feasible to prepare for the TIMSS/PIRLS than it is for PISA, which is closer to an IQ test and is, as such, more difficult to improve through policy interventions. It is nowadays fashionable to lambast the ex-Soviet and East Asian school systems for “rote learning,” “stifling creativity,” and whatnot. However, the data shows that under these systems, pupils perform well above the levels they “should” as indicated by their underlying IQ levels. Meanwhile, in places where “creativity” and “self-expression” are given full bloom, where science lessons focus on the evils of plastic bags in between sermons on LGBT appreciation and the progressiveness of Islamic civilization, academic performance is somewhat less than what might expect based on the local students’ apparent IQ levels.

This all makes sense, I suppose. To be truly “creative” you first have to acquire a ton of skills and knowledge via the old method of applied hard work. Without that, “creativity” simply boils down to a sea of PoMo-waffling curmudgeons and MacBook-toting hipsters. And whoever needs that?

Birth Defects, FBD Marriages

While researching a different topic I stumbled upon the following 2006 report on the Internet. It contains comprehensive estimates for the prevalence of birth defects all around the world. The relevant graph is reprinted below (you can click on it to get a bigger picture).


What leaps out at first sight is the sheer extent to which the worst affected countries are Muslim ones. Of the 29 countries with a birth defects prevalence of over 70/1,000 births, only 5 are not majority Muslim. 9 of the worst 10 are Muslim. Furthermore, whereas those five are all very poor African nations, the Muslim ones include very rich Arab states like the UAE, Kuwait, and Bahrain.

What explains this? Is it something in the water?

Almost certainly this is due to high rates of consanguineous marriages. As hbd* chick has frequently pointed out, the institution of father’s brother’s daughter is prevalent and commonly accepted pretty much only within the historic borders of the 8th century Caliphate. This is arguably a very regressive custom: While it promotes familial loyalty, the side cost is high rates of clannishness, nepotism, depressed national IQ’s… and, as graphically illustrated above, birth defects.

The country with the least amount of birth defects per newborn is estimated to be France.

The Farewell To Alms Theory – Older Than We Think

I am currently (re)reading The National System of Political Economy by Friedrich List (published in 1841), and this jumped out at me:

In no European kingdom is the institution of an aristocracy more judiciously designed than in England for securing to the nobility, in their relation to the Crown and the commonalty, individual independence, dignity, and stability; to give them a Parliamentary training and position; to direct their energies to patriotic and national aims; to induce them to attract to their own body the élite of the commonalty, to include in their ranks every commoner who earns distinction, whether by mental gifts, exceptional wealth, or great achievements; and, on the other hand, to cast back again amongst the commons the surplus progeny of aristocratic descent, thus leading to the amalgamation of the nobility and the commonalty in future generations. By this process the nobility is ever receiving from the Commons fresh accessions of civic and patriotic energy, of science, learning, intellectual and material resources, while it is ever restoring to the people a portion of the culture and of the spirit of independence peculiarly its own, leaving its own children to trust to their own resources, and supplying the commonalty with incentives to renewed exertion. In the case of the English lord, however large may be the number of his descendants, only one can hold the title at a time. The other members of the family are commoners, who gain a livelihood either in one of the learned professions, or in the Civil Service, in commerce, industry, or agriculture. The story goes that some time ago one of the first dukes in England conceived the idea of inviting all the blood relations of his house to a banquet, but he was fain to abandon the design because their name was legion, notwithstanding that the family pedigree had not reached farther back than for a few centuries. It would require a whole volume to show the effect of this institution upon the spirit of enterprise, the colonisation, the might and the liberties, and especially upon the forces of production of this nation.

So perhaps Gregory Clark wasn’t quite as original as many make him out to be.

PS. I myself am quite skeptical about the theory. As Ron Unz summarized it, “And I agree that Clark’s evolutionary model for England suffers from similar problems, namely that he’s produced an interesting theory explaining why the English are smarter and longer-time oriented than all the other Europeans. Except they aren’t.”

Flynn Effect DOES Apply To South Korea

Regular readers of this blog may remember my comments regarding Ron Unz’s theory that East Asians have high IQ’s independent of time/nutrition/urbanization whatever it is that causes the Flynn Effect. Here is his original article on his theory of the “East Asian Exception” and my two responses are here and here.

Anyway a new paper (well, July 2012) I think finally puts this theory to rest: The Flynn effect in Korea: large gains by Jan te Nijenhuis et al. Here is the abstract:

Secular gains in IQ test scores have been reported for many Western countries. This is the first study of secular IQ gains in South Korea, using various datasets. The first question is what the size of the Flynn effect in South Korea is. The gains per decade are 7.7 points for persons born between 1970 and 1990. These gains on broad intelligence batteries are much larger than the gains in Western countries of about 3 IQ points per decade. The second question is whether the Korean IQ gains are comparable to the Japanese IQ gains with a lag of a few decades. The gains in Japan of 7.7 IQ points per decade for those born approximately 1940 1965 are identical to the gains per decade for Koreans born 1970 1990. The third question is whether the Korean gains in height and education lag a few decades behind the Japanese gains. The Koreans reach the educational levels the Japanese reached 25 30 years before, and the gains in height for Koreans born 1970 1990 are very similar to gains in height for Japanese born 1940 1960, so three decades earlier. These findings combined strongly support the hypothesis of similar developmental patterns in the two countries.

So, similar processes (height is of course strongly associated with nutritional quality) leading to the same pattern of steady IQ gains that have been observed for all Western societies.

Incidentally, back during my discussion with Unz, I wrote: “Anyhow, I wish we could do tests on North Koreans. Their meat consumption is at less than 10kg a year and they have periodic famines. They are also directly comparable to South Koreans. They would conclusively prove your theory right or wrong!” The study authors concur on the benefits of testing the Norks:

Theoretically, it would be very interesting to do a study of secular score gains in IQ in North Korea. It appears that height has not increased in North Korea since the end of the Korean war. However, it may be that the quality and number of years of education has improved. This experiment of nature could throw some light on the question to what degree nutrition/hygiene and education influence score gains.

Antisocial Punishment: Why China Will Defeat Corruption, But Russia And The Arabs Won’t

One of the books I’ve been reading lately is Steven Pinker’s massive door-stopper The Better Angels of Our Nature. Incidentally, I found it a very interesting read with tons of cool factoids, although it could have done with a third of its text and a tiny fraction of its liberal sanctimonious. But that’s for the forthcoming review; in this post, I will focus instead on a reference I found there to a very fascinating and revealing paper about Antisocial Punishment Across Cultures (Herrmann et al.) – and by extension, its implications for social cohesion.

Power summary: The shrinks got a bunch of university students, divided them into teams of four, and got them to play a “public goods game.” They were given 20 tokens at the start of each of ten rounds, and they were told they could invest any number of them into a pot, with a return of 0.4 tokens to each player – regardless of whether or not he participates – to each token invested in the pot. So if everyone was to contribute all 20 of their tokens, each player would walk away with 32 tokens; on the other hand, if only two players were to contribute all their tokens while the other two got a free ride, the altruists would walk away with only 16 tokens, whereas the free riders would get their 16 tokens plus their original 20 which they had kept back.


In this version of the game, there were no interesting patterns; across all cultures, contributions plummeted as free riders enjoying impunity undermined the morale of productive contributors. However, that’s not how the game works in real societies, which actively punish many forms of free riding: Tax evasion, benefit fraud, dodging fares on public transport, etc. The game was then modified to include a punishment option, in which any player could choose to spend one token to remove three tokens from any other player of his choosing. The results changed drastically.

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New Delhi Cuts Ties With PISA

India backs out of global education test for 15-year-olds.

Indians were put to test for the first time in the last assessment in 2009. On the global stage, they stood second last among 73 countries, only beating Kyrgyzstan on reading, math and science abilities… This time around, sources said India shied away from the assessment as government officials felt our children were not prepared for such a test.

“India didn’t sign up for the PISA 2012 assessment because when countries were asked to sign up for that assessment, India had only signed up for the PISA 2009 assessment, which it carried out with a year later delay in 2010,” said Juliet Evans, who handles communication and administration for the PISA Secretariat. Unlike India, several other countries like Costa Rica, Malaysia, Georgia and the UAE who had carried out the PISA evaluation in 2010 did sign up for the upcoming assessment.

Which of these Soviet leaders does this remind you of?

Lenin, Stalin, Khrushchev and Brezhnev are all travelling together in a railway carriage. Unexpectedly the train stops. Lenin suggests: “Perhaps, we should call a subbotnik, so that workers and peasants fix the problem.” Stalin puts his head out of the window and shouts, “If the train does not start moving, the driver will be shot!” But the train doesn’t start moving. Khrushchev then shouts, “Let’s take the rails behind the train and use them to construct the tracks in the front”. But it still doesn’t move. Brezhnev then says, “Comrades, Comrades, let’s draw the curtains, turn on the gramophone and pretend we’re moving!”

Anyhow, most countries will continue participating, including some new ones. I am especially looking forwards to seeing how Vietnam performs. It is about ten years behind China, and its genetic IQ level is probably about 5 points lower than China’s. As such, if its IQ comes out to be appreciable lower than 95 (my own estimate is 90-92) then it would be a further blow against Ron Unz’s theory of the East Asian Exception (to the Flynn Effect).

Minorities’ Cognitive Performance In The UK

Here is data from the Cognitive Abilities Test for UK students in 2009/10 via Ambiguous.

Some interesting things to take away here:

(1) The sample is very large. Verbal IQ has the highest correlation with academic performance in most subjects, followed by Quantitative IQ, and then Non-Verbal Reasoning (recognizing patterns and such, I imagine).

(2) Indians do almost as well as Whites, although the structure of their cognitive abilities are a bit different: About 4 points lower than Whites in Verbal, but almost 2 points better in Quantitative. As rec1man said, “The Patels and Sikhs are Upper-Shudra / Vaishya and this is 80% of the diaspora in UK.” So this is highly encouraging for India’s eventual prospects; in indicates that the broad middle can in principle build a reasonably wealthy, middle-class society.

(3) The Pakistanis and Bangladeshis also don’t do too badly – certainly better than I would have expected (I visited a Pakistani school once in the UK and it was horrific).

(4) This might imply we are actually looking at the following average-IQ groups in India: Lower 40% – 93; Middle 40% – 99; Top 20% – 105, for an overall average of 98 (once Flynn Effect is done with them). That’s better than Greece today and certainly good enough  to have a developed society. But there’s tons of challenges: Malnutrition, slums, poor education, widespread vegetarianism (both voluntary and involuntary – due to poverty) that have to be sorted out for India to perform to its potential.

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