{"id":3978,"date":"2013-10-10T06:30:50","date_gmt":"2013-10-10T05:30:50","guid":{"rendered":"http:\/\/emilkirkegaard.dk\/en\/?p=3978"},"modified":"2014-10-09T18:51:12","modified_gmt":"2014-10-09T17:51:12","slug":"3978","status":"publish","type":"post","link":"https:\/\/emilkirkegaard.dk\/en\/2013\/10\/3978\/","title":{"rendered":"Review: Genes, Peoples, and Languages"},"content":{"rendered":"<p><a href=\"https:\/\/www.goodreads.com\/book\/show\/331816.Genes_Peoples_and_Languages\">https:\/\/www.goodreads.com\/book\/show\/331816.Genes_Peoples_and_Languages<\/a><\/p>\n<p>http:\/\/lib.free-college.org\/search.php?search_type=magic&#038;search_text=GENES%2C+PEOPLES+AND++LANGUAGES+&#038;submit=Dig+for<\/p>\n<p>&nbsp;<\/p>\n<p>I read it mostly becus i cudnt find his more critically acclaimed book online (<a href=\"https:\/\/www.goodreads.com\/book\/show\/404414.The_History_and_Geography_of_Human_Genes\">https:\/\/www.goodreads.com\/book\/show\/404414.The_History_and_Geography_of_Human_Genes<\/a>).<\/p>\n<p>&nbsp;<\/p>\n<p>The book is written in low-level nonfiction, i.e. very few academic sources cited. Lots of claims that require sources. While this is okay in the area the author is an expert, it fails hard in the later chapters. It is only worth reading for the parts about population genetics and linguistics.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8212;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">Therefore, it is also worth gathering information froin any dis-<\/span><\/p>\n<p><span style=\"color: #800000;\">cipline that can provide even a partial answer to our problems. <\/span><\/p>\n<p><span style=\"color: #800000;\">Within genetics itself, we want to collect as much information about <\/span><\/p>\n<p><span style=\"color: #800000;\">as many genes as pOSSible, which would allow us to use the &#8220;law of <\/span><\/p>\n<p><span style=\"color: #800000;\">large numbers\u00bb in the calculation of probabilities: random events are <\/span><\/p>\n<p><span style=\"color: #800000;\">important in evolution, but despite their capriciousness, their behav-<\/span><\/p>\n<p><span style=\"color: #800000;\">ior can be accounted for through a large number of observations. <\/span><\/p>\n<p><span style=\"color: #800000;\">Jacques Bemoulli, in his A~ coTtjectandi of 1713, wrote, &#8220;Even the <\/span><\/p>\n<p><span style=\"color: #800000;\">stupidest of men, by some instinct of nature, is convinced on his own <\/span><\/p>\n<p><span style=\"color: #800000;\">that with more observations his risk of failure is diminished.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>Predating Hume&#8217;s similar comments in his Enquiry. <a href=\"https:\/\/en.wikipedia.org\/wiki\/An_Enquiry_Concerning_Human_Understanding\">https:\/\/en.wikipedia.org\/wiki\/An_Enquiry_Concerning_Human_Understanding<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">Any attempt at reconstructing human evolution presents the <\/span><\/p>\n<p><span style=\"color: #800000;\">same problems we encounter in historical research. Experimental <\/span><\/p>\n<p><span style=\"color: #800000;\">science allows us to test any hypothesis, no matter how unlikely, but <\/span><\/p>\n<p><span style=\"color: #800000;\">history cannot be repeated at will-even if it sometimes gives the <\/span><\/p>\n<p><span style=\"color: #800000;\">appearance of repeating itself. Nevertheless, historical and anthro-<\/span><\/p>\n<p><span style=\"color: #800000;\">polOgical analogies are often useful. When these offer independent <\/span><\/p>\n<p><span style=\"color: #800000;\">confirmation or supplementary evidence, they allow us to eliminate <\/span><\/p>\n<p><span style=\"color: #800000;\">or support a hypothesis. Multidisciplinary research provides, in a <\/span><\/p>\n<p><span style=\"color: #800000;\">way, a sort of replication of an event, which is generally possible <\/span><\/p>\n<p><span style=\"color: #800000;\">only in experimental science. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">Exploring related diSCiplines can lead to rich discoveries. It was <\/span><\/p>\n<p><span style=\"color: #800000;\">with this intent that I have searched for, and often found, support <\/span><\/p>\n<p><span style=\"color: #800000;\">from fields such as linguistics, archeology, and demography. Just as <\/span><\/p>\n<p><span style=\"color: #800000;\">this approach yields positive results, it is also a source of great intel-<\/span><\/p>\n<p><span style=\"color: #800000;\">lectual satisfaction. The researcher sees the fundamental unity of <\/span><\/p>\n<p><span style=\"color: #800000;\">the sciences and their procedures. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>Good thinking. The consilience of science is a kind of independent test.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\"><strong>Heterozygote Advantage <\/strong><\/span><\/p>\n<p><span style=\"color: #800000;\">During the nineteenth century, the concept of racial purity <\/span><\/p>\n<p><span style=\"color: #800000;\">received much attention. The perfection of races or breeds is still <\/span><\/p>\n<p><span style=\"color: #800000;\">an important goal for animal breeders. Dog and cat shows establish, <\/span><\/p>\n<p><span style=\"color: #800000;\">often arbitrarily, an ideal of esthetic perfection, which trainers wish <\/span><\/p>\n<p><span style=\"color: #800000;\">to attain with their animals. This is frequently a counterproductive <\/span><\/p>\n<p><span style=\"color: #800000;\">effort. Breeders know that by seeking genetic purity through <\/span><\/p>\n<p><span style=\"color: #800000;\">repeated crossings between closely related animals-inbreeding-<\/span><\/p>\n<p><span style=\"color: #800000;\">they dangerously reduce the animals&#8217; resistance to disease. The <\/span><\/p>\n<p><span style=\"color: #800000;\">revers&amp;-outcrossing-is more desirable since racial mixing in all <\/span><\/p>\n<p><span style=\"color: #800000;\">species generally increases disease resistance and overall viability. <\/span><\/p>\n<p><span style=\"color: #800000;\">This phenomenon is known as &#8220;hybrid vigor.&#8221; When considering <\/span><\/p>\n<p><span style=\"color: #800000;\">the hybridization of a single gene, one speaks of heterozygote <\/span><\/p>\n<p><span style=\"color: #800000;\">advantage. A heterozygote is an individual who receives different <\/span><\/p>\n<p><span style=\"color: #800000;\">forms of a gene from father and mother. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">The classic example of heterozygous advantage is sickle cell ane-<\/span><\/p>\n<p><span style=\"color: #800000;\">mia, which affects mostly, but not exclusively, Africans. Consider a <\/span><\/p>\n<p><span style=\"color: #800000;\">parallel example, common in people of southern European origin: a <\/span><\/p>\n<p><span style=\"color: #800000;\">gene responsible for a genetic disease called thalassemia, a severe <\/span><\/p>\n<p><span style=\"color: #800000;\">anemia that usually kills before reproductive age is reached. The <\/span><\/p>\n<p><span style=\"color: #800000;\">gene shows up in two slightly different forms, or alleles: normal N, <\/span><\/p>\n<p><span style=\"color: #800000;\">and abnormal T (causing thalassemia). There are three possible <\/span><\/p>\n<p><span style=\"color: #800000;\">genetic types: <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">NN: individuals who receive the normal gene N from both parents are <\/span><\/p>\n<p><span style=\"color: #800000;\">&#8220;normal&#8221; homozygote \u2022. <\/span><\/p>\n<p><span style=\"color: #800000;\">NT: those who get a normal allele N from one parent and a thal-<\/span><\/p>\n<p><span style=\"color: #800000;\">assemia gene T from the other are heterozygote.. Like normal <\/span><\/p>\n<p><span style=\"color: #800000;\">homozygotes, they do not have the disease (but can be identified <\/span><\/p>\n<p><span style=\"color: #800000;\">through simple laboratory blood tests). <\/span><\/p>\n<p><span style=\"color: #800000;\">TT: persons who receive a thalassemia allele from both parents are <\/span><\/p>\n<p><span style=\"color: #800000;\">homozygote. for 1; the abnormal gene, and have the disease. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">In some European populations, for instance in the Italian <\/span><\/p>\n<p><span style=\"color: #800000;\">province of Ferrara, located between Venice and Bologna, one of <\/span><\/p>\n<p><span style=\"color: #800000;\">approximately one hundred children is born with thalassemia. <\/span><\/p>\n<p><span style=\"color: #800000;\">Nearly all those afflicted die young. Heterozygotes are 18 percent of <\/span><\/p>\n<p><span style=\"color: #800000;\">the population and the rest, 81 percent, are normal homozygotes. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">The important question is: why do so many people have the dis-<\/span><\/p>\n<p><span style=\"color: #800000;\">ease, since they inevitably die before they reach adulthood? They <\/span><\/p>\n<p><span style=\"color: #800000;\">are obviously at a selective disadvantage, and the disease should <\/span><\/p>\n<p><span style=\"color: #800000;\">disappear through natural selection. The reality is, however, more <\/span><\/p>\n<p><span style=\"color: #800000;\">complicated; the province of Ferrara has also beell affected for many <\/span><\/p>\n<p><span style=\"color: #800000;\">centuries by a highly lethal infectious disease, malaria. It so happens <\/span><\/p>\n<p><span style=\"color: #800000;\">that heterozygotes for thalassemia are resistant to it, although normal <\/span><\/p>\n<p><span style=\"color: #800000;\">homozygotes frequently succumb to the infections. The incidence of <\/span><\/p>\n<p><span style=\"color: #800000;\">malaria in the Ferrara region was so high ,until World War II, that <\/span><\/p>\n<p><span style=\"color: #800000;\">about one out of ten normal homozygotes died from it, while het-<\/span><\/p>\n<p><span style=\"color: #800000;\">erozygotes almost always survived it. Given these numbers and a few <\/span><\/p>\n<p><span style=\"color: #800000;\">calculations we might see that an equal proportion of N genes and of <\/span><\/p>\n<p><span style=\"color: #800000;\">T genes disappears at every generation, the first because of malaria <\/span><\/p>\n<p><span style=\"color: #800000;\">&#8220;and the second because of thalassemia. Therefore, until there is <\/span><\/p>\n<p><span style=\"color: #800000;\">malaria of sufficient strength, thalassemia remains at a stable fre-<\/span><\/p>\n<p><span style=\"color: #800000;\">quency in the population. The thalassemia allele gives the population <\/span><\/p>\n<p><span style=\"color: #800000;\">some protection from malaria: in fact, it saves 8.1 percent of the N <\/span><\/p>\n<p><span style=\"color: #800000;\">homozygotes who would otherwise die because of malaria, at the cost <\/span><\/p>\n<p><span style=\"color: #800000;\">of a smaller number of deaths (1 percent) because of thalassemia. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>Useful account of situation to antiracist people since it comes from an antiracist.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">The second explanation is that Europeans are the result of <\/span><\/p>\n<p><span style=\"color: #800000;\">genetic admixture, most probably resulting from migrations from <\/span><\/p>\n<p><span style=\"color: #800000;\">the two neighbOring continents, Africa and Asia. A calculation of <\/span><\/p>\n<p><span style=\"color: #800000;\">its genetic consequences fits exactly the data, as shown by Bowcock <\/span><\/p>\n<p><span style=\"color: #800000;\">et al. (1991). If we sought to determine the exact composition of <\/span><\/p>\n<p><span style=\"color: #800000;\">this mix, it appears that Europeans are about two-thirds Asian and <\/span><\/p>\n<p><span style=\"color: #800000;\">one-third Aflican. When would this mixture have occurred? The <\/span><\/p>\n<p><span style=\"color: #800000;\">data suggest a rather early date, on the order of 30,000 years. How <\/span><\/p>\n<p><span style=\"color: #800000;\">can we further test such an .explanation? It is a challenge that the <\/span><\/p>\n<p><span style=\"color: #800000;\">forthcoming data on new DNA markers may well answer. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>One is reminded by Rushton&#8217;s r-T theory tables, showing that whites are closer to asians but almost always lie in the middle when it comes to all kinds of things.<\/p>\n<p>&nbsp;<\/p>\n<p>Rushton&#8217;s table can be found here: <a href=\"http:\/\/en.metapedia.org\/wiki\/Differential_K_theory\">http:\/\/en.metapedia.org\/wiki\/Differential_K_theory<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Going with his 85, 100, 106 values for IQ, if europeans are 2\/3rds asian and 1\/3 african, they shud be at IQ 2\/3*106\u224871.02, 1\/3*85\u224828.05, i.e. 99.07. But then again, there seems no reason to prefer the value 85 for africans, since this is the value from the US, where blacks have some 20-25% european genes.<\/p>\n<p>&nbsp;<\/p>\n<p>But it does fit the value remarkably well.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">Principal components analysis had been invented in the thirties, <\/span><\/p>\n<p><span style=\"color: #800000;\">but had been applied only a few times, because of the staggering <\/span><\/p>\n<p><span style=\"color: #800000;\">amount of arithmetical work it reqUires. Before the invention of <\/span><\/p>\n<p><span style=\"color: #800000;\">computers, very few scientists were sufficiently determined to carry <\/span><\/p>\n<p><span style=\"color: #800000;\">out such an enormous number of computations. To use a concise <\/span><\/p>\n<p><span style=\"color: #800000;\">description velY unfair to the non-mathematical reader, it simplifies <\/span><\/p>\n<p><span style=\"color: #800000;\">the &#8220;data matrix.,&#8221; formed by the frequencies of the various alleles <\/span><\/p>\n<p><span style=\"color: #800000;\">of many genes, observed in many populations, by calculating the <\/span><\/p>\n<p><span style=\"color: #800000;\">eigenvectors of a few of its leading eigenvalues. It is difficult to <\/span><\/p>\n<p><span style=\"color: #800000;\">explain it to non-mathematicians, other than by saying that it <\/span><\/p>\n<p><span style=\"color: #800000;\">reduces the number of dimensions with which one can represent <\/span><\/p>\n<p><span style=\"color: #800000;\">the data, with a minimum loss of information. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>This is correct, except that it wasnt invented in the 1930&#8217;s. It was invented by Spearman or Pearson earlier. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Principal_component_analysis\">https:\/\/en.wikipedia.org\/wiki\/Principal_component_analysis<\/a> Wikigives the data 1901. Perhaps the 1930&#8217;s is when they realized that PCA is useful for population genetics and basically any science where one is looking for hidden patterns in the data.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">In more recent times growth rates increased considerably: in <\/span><\/p>\n<p><span style=\"color: #800000;\">the last century alone, the world population grew from 1.6 to almost <\/span><\/p>\n<p><span style=\"color: #800000;\">6 billion, nearly 250 times the average rate during the Paleolithic. <\/span><\/p>\n<p><span style=\"color: #800000;\">We know that if the current pattern continues, the global popula-<\/span><\/p>\n<p><span style=\"color: #800000;\">tion could reach a very dangerous point in the coming decades. <\/span><\/p>\n<p><span style=\"color: #800000;\">Nature controls an excess of human bhths in three ways: epidemics, <\/span><\/p>\n<p><span style=\"color: #800000;\">famine, and war. All of these brakes seem to be at work today: <\/span><\/p>\n<p><span style=\"color: #800000;\">AIDS, an epidemic we still cannot control, is raging; extreme mal-<\/span><\/p>\n<p><span style=\"color: #800000;\">nutrition affects more than a billion people; and an unprecedented <\/span><\/p>\n<p><span style=\"color: #800000;\">number of civil and religiOUS wars is shaking the world. So far, <\/span><\/p>\n<p><span style=\"color: #800000;\">atomic bombs have not been used in these conflicts, but nothing <\/span><\/p>\n<p><span style=\"color: #800000;\">should prevent us frolll worrying that a Russian sciimtist or engi-<\/span><\/p>\n<p><span style=\"color: #800000;\">neer, reduced to unemployment and hunge.; Or a group of religiOUS <\/span><\/p>\n<p><span style=\"color: #800000;\">extremists working for a fundamentalist government, could place <\/span><\/p>\n<p><span style=\"color: #800000;\">the hUlllan species at dsk of a global Hiroshima. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>AIDS doesnt kill very many people. It&#8217;s a very slow killer and doesn&#8217;t spread easily (bodily fluids only).<\/p>\n<p>&nbsp;<\/p>\n<p>We dont have nearly enuf nuclear bombs to kill everything \u201cglobal hiroshima\u201d.<\/p>\n<p>&nbsp;<\/p>\n<p>It is also wrong about the civil wars. In fact violence is declining, not rising. The media is misleading people with theor focus on bad news. Cf. <a href=\"https:\/\/en.wikipedia.org\/wiki\/The_Better_Angels_of_Our_Nature\">https:\/\/en.wikipedia.org\/wiki\/The_Better_Angels_of_Our_Nature<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">It is not easy to distinguish between relative contributions. The <\/span><\/p>\n<p><span style=\"color: #800000;\">similarity between two friends or between two individuals with a <\/span><\/p>\n<p><span style=\"color: #800000;\">more intimate relationship, .like a husband and wife who have lived <\/span><\/p>\n<p><span style=\"color: #800000;\">together for a very long period of time, are partly the expreSSion of <\/span><\/p>\n<p><span style=\"color: #800000;\">what the two have learned from each other and what may have <\/span><\/p>\n<p><span style=\"color: #800000;\">attracted them in the first place. These forces are often vel)&#8217; strong, <\/span><\/p>\n<p><span style=\"color: #800000;\">and we sought to examine them by surveying a group of students <\/span><\/p>\n<p><span style=\"color: #800000;\">about similarities between husbands and wives, parents and chil-<\/span><\/p>\n<p><span style=\"color: #800000;\">dren, and between frie~ds. We asked about forty questions, and <\/span><\/p>\n<p><span style=\"color: #800000;\">queried the students about themselves and their parents, as well as <\/span><\/p>\n<p><span style=\"color: #800000;\">the parents about the students and themselves. On average, the <\/span><\/p>\n<p><span style=\"color: #800000;\">correlations (the similarities) between husbands and wives (the stu-<\/span><\/p>\n<p><span style=\"color: #800000;\">dents&#8217; parents) were the greatest, followed by those between par-<\/span><\/p>\n<p><span style=\"color: #800000;\">ents and children, and finally between friends. The characteristics <\/span><\/p>\n<p><span style=\"color: #800000;\">studied addressed social activities, habits, leisure activities, super-<\/span><\/p>\n<p><span style=\"color: #800000;\">stitions, beliefs, and so on. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>The first one is easily testable. If people grow more similar to each other as they age, then it cant be genetics alone. If they dont, then genetics+assortative mating is most likely the explanation.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">It is always possible that some part of the Similarity between <\/span><\/p>\n<p><span style=\"color: #800000;\">parents and children has a genetic basis. The distinction between <\/span><\/p>\n<p><span style=\"color: #800000;\">biological and cultural transmission is not always an obvious one. <\/span><\/p>\n<p><span style=\"color: #800000;\">For example, it was long believed that the similarity between the <\/span><\/p>\n<p><span style=\"color: #800000;\">IQ of parents and children was entirely genetic in origin. The <\/span><\/p>\n<p><span style=\"color: #800000;\">famous British psycholOgist Sir Cyril Burt, undoubtedly carried <\/span><\/p>\n<p><span style=\"color: #800000;\">away by enthusiasm, even stooped so low as to publish false data to <\/span><\/p>\n<p><span style=\"color: #800000;\">&#8220;proven a genetic basis for IQ. It is thanks to the American psychol-<\/span><\/p>\n<p><span style=\"color: #800000;\">ogist Leon Kamin that Burt&#8217;s fraud was discovered. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>Burts results are in agreement with modern data, making it unlikely that it was fraud. See also: <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cyril_Burt#.22The_Burt_Affair.22\">https:\/\/en.wikipedia.org\/wiki\/Cyril_Burt#.22The_Burt_Affair.22<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Probably not fraudulent, but more careless than any scientist shud be. The data shud obviously have been published freely, not burned!<\/p>\n<p>&nbsp;<\/p>\n<p>See also: <a href=\"https:\/\/en.wikipedia.org\/wiki\/J._Philippe_Rushton\">Rushton, J.P.<\/a> (2002). &#8220;<a href=\"http:\/\/psychology.uwo.ca\/faculty\/rushtonpdfs\/Burt2002.pdf\">New Evidence on Sir Cyril Burt: His 1964 Speech to the Association of Educational Psychologists<\/a>&#8220;, <em>Intelligence<\/em>, 30, 555-567.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">At the beginning of work on IQ, the French government asked <\/span><\/p>\n<p><span style=\"color: #800000;\">Alfred Binet to develop a method for identifying children with <\/span><\/p>\n<p><span style=\"color: #800000;\">mental handicaps in order to provide them with special schooling at <\/span><\/p>\n<p><span style=\"color: #800000;\">an early age. But it was primarily American psychologists who tried <\/span><\/p>\n<p><span style=\"color: #800000;\">to change Binet&#8217;s IQ scores into a measure of &#8220;pure\u201d intelligence&#8211;<\/span><\/p>\n<p><span style=\"color: #800000;\">independent of the culture or social milieu in which the tests were <\/span><\/p>\n<p><span style=\"color: #800000;\">conducted. This misplaced enthusiasm led to several serious social <\/span><\/p>\n<p><span style=\"color: #800000;\">mistakes, of which not all have been corrected. The study of <\/span><\/p>\n<p><span style=\"color: #800000;\">adopted children was decisive in showing that cultural transmission <\/span><\/p>\n<p><span style=\"color: #800000;\">exerts a strong influence on the determination of IQ. American <\/span><\/p>\n<p><span style=\"color: #800000;\">studies in 1980 and 1981 established that only one-third of the vari-<\/span><\/p>\n<p><span style=\"color: #800000;\">ation in IQ among individuals was due to biological heredity. <\/span><\/p>\n<p><span style=\"color: #800000;\">Another third can be explained by cultural transmission, while the <\/span><\/p>\n<p><span style=\"color: #800000;\">last third appears mostly due to other unspecified, mostly random <\/span><\/p>\n<p><span style=\"color: #800000;\">differences in personal life experience. This is a far cry from the 80 <\/span><\/p>\n<p><span style=\"color: #800000;\">or 90 percent genetic contribution suggested by Burt and his many <\/span><\/p>\n<p><span style=\"color: #800000;\">American colleagues. Similarly, Arthur jensen&#8217;s statement that the <\/span><\/p>\n<p><span style=\"color: #800000;\">low IQ average of African Amelicans relative to Whites is genetic <\/span><\/p>\n<p><span style=\"color: #800000;\">was contradicted by studies of Black children adopted by Whites in <\/span><\/p>\n<p><span style=\"color: #800000;\">England and the United States. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>It is interesting how mislead Sforza can be here. Since the analysis of intelligence depends on the exact same mathematical tools he used himself! Factor Analysis!<\/p>\n<p>&nbsp;<\/p>\n<p>He ofc cites no sources for these claims. If they are true at all, they are without a doubt child samples. The heritability of intelligence is known to increase with age, so if one wants to prove that intelligence isnt highly heritable and is susceptible to shared environment, all one has to do is rely on child samples. The younger the better. Not very interesting tho.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">Theories about the role IQ plays in social stratification have <\/span><\/p>\n<p><span style=\"color: #800000;\">also been disproved. Some researchers have claimed, without real <\/span><\/p>\n<p><span style=\"color: #800000;\">evidence, that the difference in IQ observed between high and <\/span><\/p>\n<p><span style=\"color: #800000;\">low social classes was genetic, because people with a high IQ <\/span><\/p>\n<p><span style=\"color: #800000;\">automatically became part of the high soCial classes. A French <\/span><\/p>\n<p><span style=\"color: #800000;\">study on adoptions again showed that the difference was primarily <\/span><\/p>\n<p><span style=\"color: #800000;\">sociocultural and not genetic. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>Historically, it is ironic that it is IQ researches who are accused of bad science! It was the strict environmentalists who kept using the useless research designs that cud not spot the difference between genes and environment.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">There is probably still very widespread prejudice in America <\/span><\/p>\n<p><span style=\"color: #800000;\">concerning the low IQ of Black Americans: the majority is likely to <\/span><\/p>\n<p><span style=\"color: #800000;\">be still convinced that it is the result of a real genetic difference and <\/span><\/p>\n<p><span style=\"color: #800000;\">not of a strong social handicap that cannot be reversed in a short <\/span><\/p>\n<p><span style=\"color: #800000;\">time. Contrast the enthusiastic acceptance of the book The Bell <\/span><\/p>\n<p><span style=\"color: #800000;\">Curve and its racist message with the response to the information <\/span><\/p>\n<p><span style=\"color: #800000;\">that the average Japanese IQ is greater than that of White Ameri-<\/span><\/p>\n<p><span style=\"color: #800000;\">cans by 11 pOints, almost as much as the average difference between <\/span><\/p>\n<p><span style=\"color: #800000;\">White Americans and Black Americans. Then, the response was: it <\/span><\/p>\n<p><span style=\"color: #800000;\">is clear that American high schools are very bad. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>I just read the bell curve. There is no mention that the Japanese average an IQ of 111. The usual figures are given which are around 105.<\/p>\n<p>&nbsp;<\/p>\n<p>&#8211;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #800000;\">Adoption studies provide the best guarantee against the confu-<\/span><\/p>\n<p><span style=\"color: #800000;\">sion of biological and cultural transmissions, but these studies are dif-<\/span><\/p>\n<p><span style=\"color: #800000;\">ficult and costly, largely because there are so few subjects. The most <\/span><\/p>\n<p><span style=\"color: #800000;\">ambitious studies use ~dentical twins who have been raised sepa-<\/span><\/p>\n<p><span style=\"color: #800000;\">rately. But these studies are hampered by small samples and because <\/span><\/p>\n<p><span style=\"color: #800000;\">the very early environments of twins, pairs, and their rearing is not <\/span><\/p>\n<p><span style=\"color: #800000;\">always independent. But other methods exist that help limit confu-<\/span><\/p>\n<p><span style=\"color: #800000;\">sion between cultural and biological inheritance. For example, in the <\/span><\/p>\n<p><span style=\"color: #800000;\">case of religiOUS or political similarities between parents and chil-<\/span><\/p>\n<p><span style=\"color: #800000;\">dren, we used published research data comparing identical twins, <\/span><\/p>\n<p><span style=\"color: #800000;\">fraternal twins, and regular siblings. Fraternal twins should not <\/span><\/p>\n<p><span style=\"color: #800000;\">resemble each other more than regular siblings if biolOgical heredity <\/span><\/p>\n<p><span style=\"color: #800000;\">were the only important factor. In the case of religiOUS or political <\/span><\/p>\n<p><span style=\"color: #800000;\">creeds, the similarity between fraternal pairs was almost the same as <\/span><\/p>\n<p><span style=\"color: #800000;\">for identical twins, indicating that genetics plays no (or only a vel)&#8217; <\/span><\/p>\n<p><span style=\"color: #800000;\">small part) in this trait. Family background does have a major effect. <\/span><\/p>\n<p><span style=\"color: #800000;\">The purely or predominantly maternal transmission of some religiOUS <\/span><\/p>\n<p><span style=\"color: #800000;\">characteristics would be difficult to explain in a strictly biological way. <\/span><\/p>\n<p><span style=\"color: #800000;\">Maternal transmission exists for biolOgical characteristics deter-<\/span><\/p>\n<p><span style=\"color: #800000;\">mined by the mitochondrial genome. However, it would be very sur-<\/span><\/p>\n<p><span style=\"color: #800000;\">prising if tl,ese cytoplasmic organelles, which supply the cell&#8217;s energy, <\/span><\/p>\n<p><span style=\"color: #800000;\">had any effect on individual religiOUS beliefs. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>The problems of these crude studies are easy to overcome when we get cheaper genome sequencing. The reason is this: When we say that siblings have 50% gene variation in common, this is only an average. In reality it varies. This variation per genetic theory will produce stronger and weaker correlations. So it shud be rather easy to settle the matter for good with such analysis.<\/p>\n<p>&nbsp;<\/p>\n<p>Im fairly certain i got the idea from: <a href=\"https:\/\/occidentalascent.wordpress.com\/\">https:\/\/occidentalascent.wordpress.com\/<\/a> but i cant find the post.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.goodreads.com\/book\/show\/331816.Genes_Peoples_and_Languages http:\/\/lib.free-college.org\/search.php?search_type=magic&#038;search_text=GENES%2C+PEOPLES+AND++LANGUAGES+&#038;submit=Dig+for &nbsp; I read it mostly becus i cudnt find his more critically acclaimed book online (https:\/\/www.goodreads.com\/book\/show\/404414.The_History_and_Geography_of_Human_Genes). &nbsp; The book is written in low-level nonfiction, i.e. very few academic sources cited. Lots of claims that require sources. While this is okay in the area the author is an expert, it fails hard in the [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1690],"tags":[1989,1067],"class_list":["post-3978","post","type-post","status-publish","format-standard","hentry","category-genetics","tag-population-genetics-2","tag-review","entry"],"_links":{"self":[{"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/posts\/3978","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/comments?post=3978"}],"version-history":[{"count":3,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/posts\/3978\/revisions"}],"predecessor-version":[{"id":4378,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/posts\/3978\/revisions\/4378"}],"wp:attachment":[{"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/media?parent=3978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/categories?post=3978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/tags?post=3978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}