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You answer verbally. Later you are handed some wooden puzzle blocks and you try to assemble them into something meaningful. And on one section, you do actually take a pencil to mark down your answers. Your job on this "coding test" is to translate small, made-up characters into numbers using the coding key at the bottom of the page. The circle with a dot inside stands for 4; an "X" with a parenthesis next to it stands for 7. Code as many as you can in a minute or two.

Note that I am not using actual items from IQ tests here.

Hive Mind: How Your Nation's IQ Matters So Much More Than Your Own

I just use examples that are similar. One doesn't give away answers to IQ test questions. However, some more rudimentary IQ tests really are just written multiple-choice exams, and one of them plays an important role throughout this book and in economic research: Raven's Progressive Matrices. Take a look at Wikipedia's sample Raven's question Figure 1.


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Fortunately, the real Raven's is multiple choice, so you needn't solve it yourself. In all these questions, the goal is to look for a visual pattern and then choose the option that completes the pattern. The questions eventually get quite difficult. The lower-right corner is always blank, and you choose the best multiple-choice response. Raven's is popular because it can easily be given to a roomful of students at once no need for one tester per student and because it appears note the italics to have fewer cultural biases than some other IQ tests: the test doesn't measure your vocabulary, your exposure to American or British history, your skill at arithmetic, or any other obviously school-taught skill.

Most people don't practice Raven's-style questions at school or at home, so training which obviously can distort IQ scores artificially might not be much of a concern.

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The g factor or da Vinci Effect means that your scores on one part of an IQ test predict your scores on other parts. But how well do they do that? Is it almost perfect? And if so, what does an "almost perfect" relationship look like in the real world? Here's one example: the relationship between the heights of identical twins.

Garett Jones, Hive Mind: How Your Nation’s IQ Matters So Much More Than Your Own | SpringerLink

Identical twins are almost always almost exactly the same height as each other. Throughout this book, when two measures have a relationship that strong, I'll call that a "nearly perfect" or "almost perfect" relationship. The two measures don't have to be recorded in the same units: the average monthly Fahrenheit temperature in Washington, D. Another example of a "nearly perfect" relationship is your IQ measured this week versus your IQ measured next week. A few people have exceptionally good or bad test days, but they're not common enough to weaken the nearly perfect relationship.

Even more relevant: in one study, a person's adult IQ has an almost perfect relationship with his IQ five years later. A slightly weaker but still strong relationship exists between the body mass index BMI of identical twins raised apart. BMI is a complicated ratio of weight and height that is used to measure whether people are over- or underweight.

You can imagine why this relationship might be a bit weaker than the height relationship: some parents feed their kids more calories, some kids live in towns where sports are popular, and so on. But the rule that identical twins have similar BMI is still extremely useful. This is what we'll call a "strong" or "robust" relationship. This is like the relationship between your IQ when you're a teenager and your IQ when you're in middle age, at least in the rich countries. High scorers in tenth grade are almost always above-average scorers in middle age, with some doing noticeably better than before and some doing noticeably worse.

Here, the exceptions are interesting, noticeable, an area for future research, but only a fool would ignore the rule. For instance, the link between national average test scores and national income per person is strong. Slightly weaker relationships need their own expression, and we'll call those "modest" or "moderate" relationships. Here, big exceptions are extremely common, but if you're comparing averages of small groups of people, you'll still see the rule at work.

#84 Garett Jones: Hive Mind, The Importance of National IQ, and Immigration

An example we're all familiar with is the relationship between height and gender. Men are usually taller than women, but enormous exceptions abound: indeed, few would protest the statement "men are taller than women" because we all know it's just a generalization. These "modest" or "moderate" relationships sometimes exist between different parts of an IQ test or across very different kinds of IQ tests. While Jones has some of the answers, he asks many more of the reader and his fellow researchers. How important is IQ to the economy? If so, the IQ of which portions of the population?

How can IQ be increased? If so, what interventions are most effective? A major take-away from the research is that IQ is mutable, at least on the generational level. Childhood nutrition and education can significantly increase standardized te This book opens, rather than closes, the public discussion on national IQ.

Childhood nutrition and education can significantly increase standardized test scores, and offer great promise for breaking undeveloped nations out of vicious cycles of poverty. Even more conservative sorts such as myself should be interested in the possibility of one-time interventions permanently improving a society's lot. Jones does struggle a bit at balancing the demands of writing for both professional and popular audiences.

This is one of his first books, though, and I look forward to seeing where he goes in the future. Dec 26, Eric Burke rated it liked it. More a question mark in prose form than anything else; but an intriguing question mark at that.

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The idea that "smart" societies achieve more seems straight-forward enough, but the general intelligence of a nation's population as well as its economy is a direct product of that nation's history. Raising average IQ in struggling nations or our own shouldn't require a monograph worth of convincing in order for us to adopt it as a valuable objective.

But, as the author repeatedly points out, achiev More a question mark in prose form than anything else; but an intriguing question mark at that. But, as the author repeatedly points out, achieving change or diagnosing the complexity of international problems requires far more than working to collectively raise our scores on standardized batteries. It requires a deep engagement with and understanding of global history -- a factor completely neglected in this work.

Hive Mind, IQ, and the Wealth of Nations with Garett Jones

May 04, TuVan Nguyen rated it really liked it. It's a great book for people interested in IQ research and economics. Even for the IQ dissenters, I would still recommend this book to them because it lays out a solid argument for why IQ tests and standardized tests such as the SATs are a good measure of important cognitive skills. In addition, it also touches on the inflammatory issue of racial IQ differences in a way that's palpable to both sides.

The author is open-minded about the issue, but he doesn't leap to unnecessary conclusions due to It's a great book for people interested in IQ research and economics.

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The author is open-minded about the issue, but he doesn't leap to unnecessary conclusions due to the little amount of research done. I found Jone's explanations on how average IQ can affect a nation illuminating. However, he should have addressed a hole in his argument: Hong Kong has the highest IQ in the data appendix yet the Chinese government is notorious for corruption. An Uncontroversial IQ book "If the misery of the poor be caused not by the laws of nature, but by our institutions, great is our sin.

This book is short well argued and I will boil it down to Children growing up in a country which is bad for nutrition, disease, pollution and education won't flourish. These a An Uncontroversial IQ book "If the misery of the poor be caused not by the laws of nature, but by our institutions, great is our sin. These are things we can help with so we should. Nov 24, Groot rated it really liked it Shelves: nonfiction. Speaking of cognitive dissonance He speaks quite clearly of the benefits of a higher-IQ population, even if only a few IQ points, and how important it therefore is to raise a nation's IQ.

Then he proudly signs a letter encouraging large-scale immigration of lower-IQ emigrants. Then he worries about how these new immigrants, with low IQs and histories of voting for statist, low-IQ kleptocracies, might now vote. So the doctor says, "Stop hitting yourself in the head with the hammer. Jan 17, Lorenzo rated it really liked it. Straightforward, neither too academic nor too mainstream. Even though the perspective may seem a little too broad, the book succeeds in presenting clearly its thesis and its impact for our present and future society. Dec 23, Alasdair Reads rated it liked it.

Extremely clearly argued.

officegoodlucks.com/order/15/3516-como-localizar-un.php Stuart Ritchie's review in Intelligence gives the critique I would give as well. Still it seems like there are some interventions that probably do raise IQ and are likely to have a large amount of "knock on" good effects in deficient nations. Prenatal Iodine supplementation in particular seems very promising in large parts of the world.