As HBD Chick discusses, the disappearance of references to Germanic kindreds (the Germanic version of the clan, see medieval germanic kindreds and the ditmarsians | hbd* chick and more on medieval germanic kindreds | hbd* chick) also follows this pattern: (In that post ibd rates and kindreds in germanic populations HBD Chick also examines the samples used in Ralphs and Coops analysis. These divisions have had great significance for the past and present of these countries and the countries they sired. Among Israeli Ashkenazi Jews, the first-cousin marriage rate was measured in a 1955-7 study at 1.4% and other cousin marriages at 1.06% of all marriages. Ill be honest, Ive no idea how youre able to synthesize all these data into posts like these, given your other preoccupations (Dont know about you, but for me, writing an HBD post is like a class project do the research, write the paper, cite the sources, etc. 6-7 the italians, the greeks, the chinese I think you may have hit the nail on the head. as seen from this map drawn by HBD Chick (see historic european homicide rates and the hajnal line). Further reinforcing our estimation of historic levels of inbreeding across various parts of Europe and the Middle East, as seen on my map, is the fact that many of these countries (the Islamic world) are still actively inbreeding (from consang.net): Europeans and for that matter East Asians have, by in large, ceased inbreeding in the 20th century by the latest. About 70% of inbred households reside in rural areas. Since then, intermarriage rates have steadily climbed. These states give genetic counseling by a physician before the union. E. Relationship between F and demographic rates: W inbred = W out x e (-B F) where W = survival (S x) or fecundity (m x) F = the inbreeding coefficient B = the number of lethal equivalents per gamete "B" is a measure of the rate at which survival or fecundity decreases with increased inbreeding. On the other hand, being someone in the middle ground doesnt necessarily give me a correct understanding of the situation. The polygamous town facing genetic disaster. I get the feeling research is being cherry picked for articles/data supporting someones pet theses. Religious restrictions compounded by the geographical isolation of some Indian habitats due to the country's diverse topography have contributed significantly to a relatively higher rate of inbreeding (population-inbreeding coefficient of India = 0.00-0.20) and, thus, served as barriers to random mating and free gene flow leading to the . more on medieval england and france Many famous personalities in the 18th and 19th century are inbred. Time for another humiliating failure for the fading American empire, Truth About Tanks: How NATO Lied Its Way to Disaster in Ukraine, The Crisis in Ukraine is not about Ukraine. (good for you! Credit: CC0 Public Domain. (F.R.B.) Their parents have died, who are believed to be closely related genetically and biologically. anglo-saxon mating patterns Specifically Ashkenazi. and Haiti some time ago that may offer some perspective: We have often used Europe and the Middle East as examples of this, because strong regional variations in historic rates of inbreeding exist in those places. Column Has Come to an Adios, Gilad Atzmon on Ukraine, Zelensky and Israel, The West Cant Engage China on the Climate, While Also Demonising Them, Truth and Fiction in Elie Wiesels Night, How the Coronavirus Is Testing Putins Leadershipand the System He Created. I would add, as explanation, that if you have small groups of people which move around a lot and occasionally accept new members, the new members can add a great deal of genetic variety. This is because the populations listed as more inbred have had histories of marrying within their own extended families, more recently so than those in less inbred societies. Also, as HBD Chick noted, the fairly high levels of civicness found in Blacks may be titled towards exclusive, self/in-group interested forms rather than the truly exclusive, out-group oriented ones seen in NW Euros see: good civicness vs. bad civicness | hbd* chick ). Whereas if youre stuck in one place, even if youre trying to out-breed, sooner or later everyones your cousin. Those Who Can See M.G.s blog synthesizing theories based on data drawn from the HBD community, Human Varieties Jason Malloys and many others data-rich blog on the evidence for human differences, particularly about IQ data, Meng Hus Blog A detailed and technical look into IQ and IQ testing. United States and Venezuela: A Historical Background, War with China! That is not to say that mountain-dwelling always results in inbreeding; as we saw, the denizens of the Alps managed to avoid it. Inbreeding has been taking place among Muslims for 50 generations, which amounts to about 1,400 years after the prophet Muhammed endorsed marriage between first cousins. mating patterns, family types, and clannishness in twentieth century ireland (SKC) that when a dog is imported from another country, up to three generations of its pedigree (parents, grandparents and great grandparents) are typically included in the SKC database (Th. We recently had DNA tests done on both of them. One in three-to-four girls, and one in five-to-seven boys, are sexually abused before they turn 18, an overwhelming incidence of which happens within the family. My personal experience with Jews is that they are not quite as clannish as they claim. Perhaps Slovenia, a bit of a paradox here, can also be a case of smooth inbreeding but of a higher degree than Sweden and Japan. At that level, you get most of the advantages of outbreeding, including liberal democracy, functional institutions, and a high-trust society, but retain a certain level of nationalism and ethnic cohesion that allows the society to resist opening itself to non-reciprocating outsiders, as the most outbred Northwestern Europeans apparently have. both diseases can, of course, get concentrated in inbred lineages, but the inbreeding does not cause either of them. ), since all of that was also dependent upon europes medieval agricultural system and manorialism and all of the subsequent, and consequent, economic developments since then. i havent gotten around to the rest of scandinavia yet. But that may not be so much of a problem. At that level, you get most of the advantages of outbreeding, including liberal democracy, functional institutions, and a high-trust society, but retain a certain level of nationalism and ethnic cohesion that allows the society to resist opening itself to non-reciprocating outsiders, as the most outbred Northwestern Europeans apparently have. 1 the english (not all of them probably not the cornish, for instance), some of the dutch. Is the Solution to the Labor Shortage More Immigrationor Child Labor? JayMan, you have a real gift for (among other things) bringing together a treasure trove of pertinent links and maps on a topic into one succint post. See here. Widespread inbreeding in Saudi Arabia has produced several genetic disorders, Saudi public health officials said, including the blood diseases of thalassemia, a potentially fatal hemoglobin. In general, mating between people who are closer than first cousins is considered inbreeding. Because of the inbreeding rates in these countries, certain genetic disorders are more common. I mean that you find nothing but shicksas in every maternal line if you go back enough generations. They are not especially intelligent (IQ 95) but have less corruption and violence than most countries, especially for that IQ-level. In a recent report in DW by S Khan, the author discussed how Pakistan is facing many medical challenges due to the high rate of cousin marriages. Even though inbreeding might not be as common today, it may have been more common in the past, which has contributed to lots of people being very genetically similar. Its about strong between family genetic barriers, not low overall genetic diversity (which matters little from a natural selection standpoint). early medieval germans again! Now indeed, to place HBD-Chicks hypothesis on the most solid footing, we should ideally examine the genetic data to get firmer estimates of the level of long-term inbreeding in these populations, rather than relying primarily on historical data and the traits of modern peoples. He clearly put a lot of effort into this post, and if you want to be helpful and provide good sources for genetic data, Im sure people would be grateful. This includes the deleterious alleles that would . PeriStats provides free access to maternal and infant health-related data at the U.S., state, county, and city level. These are general ideas based on the evidence I have so far seen. Sennels states that research reveals inbred children lose 10-16 points from their IQ, and the chance of having an IQ of less than 70 (the official demarcation for being classified as 'retarded . This is an undertaking we might pursue in the manner Razib Khan suggested, and this might be a project we will soon address. This is a map of our current best guess of the rates of historic inbreeding across Europe and parts of the Near East. the zadruga 'White Privilege' as a Dark Legacy or Inheritance Rather Than a Socio-Economic Condition, Beethoven & Bach ARE the WEST, Not Cardi B, Kanye, Rihanna, The Inflation and Tax Assault on the American People, Ron DeSantis Has a Secret Weapon: He's a Master of Wedge Issues. balkan endogamy neither haemochromatosis nor huntingtons have anything to do with close cousin marriages, which, as jayman pointed out, is what we mean by inbreeding in this context. So Japan is really just one big clan. ), The decline in violence across Europe during the past millennium, which was discussed by Steven Pinker in his book The Better Angels of Our Nature, (discussed here: violence around the world | hbd* chick). For example, members of the Amish community may have higher rates of inbreeding because they tend to marry other Amish people, which shrinks the size of the population. However, one incongruity appears to be Italy, and to a lesser extent, Spain and Greece. cousin marriage or not) in sweden so far. Genetic Disorders Hit Amish Hard. Indeed. the semai of malaysia avoid marrying anyone closer than a second cousin (i dont know for how long theyve been doing that, though) and they are a very peaceful, nonviolent population but they didnt/havent invented the western world or, say, liberal democracy (afaik! What is the Most Inbred State in the U.S.? 11 the arabs. inbreeding in 18th and 19th century sweden I mean, if everyone loves gay people, thats not individualism. Some of these countries in the 3-4 range seem to lack much of the deleterious universalist sentiments found in those scoring 1-2. [ Read article] Birth defects are the leading cause of infant deaths, accounting for 20% of all infant deaths. (The high immigrant populations in the ex-Soviet states are mostly Russians; those in Ireland are primarily from Britain. The mean inbreeding coefficient (F) in the present study was 0.0238. you decide whether or not ive been cherry-picking: inbreeding in sweden However, even a slightly upward trend of consanguineous marriages was witnessed from 63.0% in 1990-1991 to 67.9% in 2007-2008, followed by a gradual downwards trend. mating patterns in baltic populations, The Balkans: Inbreeding is important because it may increase the risk of certain types of genetic diseases and disorders among certain pockets of the population. Human inbreeding is said to be started 60,000 years ago when a small group of early African tribes settled down in Asia and Europe. 1000-1200 onwards. Higher proportions of stillborn and deformed By 1980, the share of intermarried newlyweds had about doubled to 7%. civicness in france by region However, it visualizes what areas we think are the most and least inbred, based on these regions histories and other pieces of evidence we have. Therein, they produced this map: The average IBD rates for each of the countries sampled is shown. There is evidence that heterozygosity is something that humans actively select for in mates, as well as selecting genetically dissimilar partners to produce more heterozygous offspring. However, determination of inbreeding rates in natural populations is confounded by incomplete parentage information. What regions across Europe and the Near East are we talking about? The within-family coefficient of relationship are higher in these inbred populations (or at least were in the not to distant past, since many of these formerly inbreeding populations have since switched to marriage outside the family). Also, see what HBD Chick said . About 40 percent of the population marries a cousin in Egypt, according to a 2016 report in The Economist, while the percentage in Jordan is 32 percent. They have a large (albeit, historically isolated) population, so perhaps that help to selection out clannishness? Ethnic Russians,a roughly 50-50 genetic mix of finnic and slavonic nations are one of the least inbred nations of Europe.Holland on the other hand has one of the highest percentages. This attitude worked great back in the middle ages and it might be good to keep out floods of immigrants but it leaves something to be desired in a world where so many countries have nuclear arsenals. My guesses: Iceland is most inbred because the population is smaller. If you imagine a population with maximal out-breeding the average level of relatedness of that population at the end of the process will be different for a population of 100,000, or one million or ten million. While I dont have the exact answer re: inbreeding in Haiti, I did write a blog post on the D.R. (im trying not to invoke the old GIGO computer trope for inbreeding pygmies:) i.e., do you think the relationship between level of inbreeding & whatever dependent variable is the same for all groups? the swedes (and other scandinavians) are an interesting case because, although you guys starting outbreeding relatively late (i think) i.e. Now accepting Bitcoins! Far Left FBI Director Endorses Lab Leak Theory Conservatives Rejoice! The total size of the population must be a factor. These divisions (with some exceptions which soon Ill note) shouldnt be taken to be hard and fast. The Cavaliers (and even the Appalachians) are far less likely to hit the red button than some African or Asian despot. you might also want to check all my other posts on the history of mating patterns in various other populations (see left-hand column toward the bottom of the page on my blog). The total size of the population must be a factor. Obesity Facts List keys facts on obesity, such as its high heritability, and addresses important misconceptions, such as the ineffectiveness of diet and exercise in treating it and its greatly overstated health impact, West Hunter Blog of physicist Greg Cochran and anthropologist Henry Harpending, authors of the seminal book The 10,000 Year Explosion, Gene Expression The Unz Review Razib Khans Gene Expression blog, HBD Chicks blog The venerable hbd* chick, discussing the rise of modern peoples, particularly the role of inbreeding in such, Psychological comments Intelligence researcher James Thompsons blog discussing IQ and other aspects of the human sciences, Random Critical Analysis Statistical analysis on matters related to racial differences broken down in an easy-to-follow format, Clear Language, Clear Mind Emil Kirkegaards site where he performs important HBD analysis, Steve Sailers iSteve Blog The Unz Review The man who (largely) started it all. there was a secular law that continued the ban up to the mid-1800s (which mustve applied at some points also in denmark and/or norway? Which race has the most inbreeding in America? but what about the english? It can reduce litter size, increase the likelihood of health problems, and the dogs might develop undesirable temperaments. Research on intrafamilial marriage in such enclaves is slim. Whereas if youre stuck in one place, even if youre trying to out-breed, sooner or later everyones your cousin. HBD Fundamentals A bibliography referencing key papers and other publications which serve as the basic evidence for human biodiversity, in an easy-to-follow form.
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