Archives for posts with tag: inclusive fitness

Svante Paabo talk at NIH“According to Dr. Paabo, Ust-Ishim has longer Neandertal chunks than modern humans and this can be used to estimate that the admixture with Neandertals happened 331+/-99 generations before its time of 45,000y BP, or around 50-60,000y BP…. This pretty much proves that there were modern humans in Eurasia before the Upper Paleolithic revolution and disproves Richard Klein’s theory that modern humans together with UP technologies spread Out-of-Africa only after 50,000 years ago.” – from dienekes.

Europeans have three times more Neanderthal genes for lipid catabolism than Asians or Africans“Contemporary Europeans have as many as three times more Neanderthal variants in genes involved in lipid catabolism than Asians and Africans. Although Neanderthals are extinct, fragments of their genomes persist in modern humans. These shared regions are unevenly distributed across the genome and some regions are particularly enriched with Neanderthal variants.”

The really old Europe is mostly in Eastern Europe“‘These results confirm Sardinia as a refuge area where ancestry related to Early European Farmers has been best preserved, and also the greater persistence of WHG-related ancestry in present-day Eastern European populations. The latter finding suggests that West European Hunter-Gatherers (so-named because of the prevalence of Loschbour and La Braña) or populations related to them have contributed to the ancestry of present-day Eastern European groups.’” – @eurogenes blog.

More on Deafness“Seems to me that limited verbal stimulation is not a very plausible primary cause of low test scores and low academic achievement in blacks, because the degree of deprivation needed to cause a 1-standard deviation decline is extreme (deafness), and because there is an even greater depression of nonverbal scores, which, judging from the results in deaf children, should not be affected at all by limited verbal stimulation.” – from greg cochran.

Language structure: You’re born with it“Humans are unique in their ability to acquire language. But how? A new study shows that we are in fact born with the basic fundamental knowledge of language, thus shedding light on the age-old linguistic ‘nature vs. nurture’ debate.”

Selection for complex traits leaves little or no classic signatures of selection“We present empirical evidence to suggests little discernible ‘selection signature’ for complex traits in the genome of dairy cattle despite very strong and recent artificial selection.” – h/t razib!

Whole genome sequencing of six dog breeds from continuous altitudes reveals adaption to high-altitude hypoxia“To understand the genetic bases of adaption to high altitude in dogs, we performed whole-genome sequencing of 60 dogs including five breeds living at continuous altitudes along the Tibetan plateau from 800 to 5,100 m as well as one European breed…. Comparison of the breeds from different altitudes reveals strong signals of population differentiation at the locus of hypoxia-related genes including endothelial Per-Arnt-Sim (PAS) domain protein 1 (EPAS1) and beta hemoglobin cluster. Especially, four novel non-synonymous mutations specific to high-altitude dogs are identified at EPAS1, one of which occurred at a quite conserved site in the PAS domain. The association testing between EPAS1 genotypes and blood-related phenotypes on additional high-altitude dogs reveals that the homozygous mutation is associated with the decreased blood flow resistance, which may help to improve hemorheologic fitness. Interestingly, EPAS1 was also identified as a selective target in Tibetan highlanders, though no amino acid changes were found. Thus, our results not only indicate parallel evolution of humans and dogs in adaption to high-altitude hypoxia, but also provide a new opportunity to study the role of EPAS1 in the adaptive processes.” – h/t joe pickerell!

Facial Width-To-Height Ratio Relates to Alpha Status and Assertive Personality in Capuchin Monkeys“fWHR was positively associated with alpha status and with a dimensional rating of assertive personality in both males and females. Moreover, fWHR showed significant sexual dimorphism in adults but not juveniles, suggesting a developmental change may occur during puberty. In a sub-sample, sex differences were mediated by weight, suggesting fWHR dimorphism does not exceed what would be expected by differences in body weight. This is the first report of an association between face shape and behaviour in a non-human species.” – h/t stuart ritchie!

The relationship between Microcephalin, ASPM and intelligence: A reconsideration“Microcephalin is strongly associated with DNA repair, which indicates a special role for this allele in the intrinsic anti-viral immune response. Enhanced immune functioning may have advantaged both hunter–gatherer and agrarian societies coping with the heightened disease burden that resulted from population growth and exposure to zoonotic diseases, making it more likely that such growth and concomitant increases in intelligence could occur.” – from michael woodley et al. – see also The riddle of Microcephalin – from peter frost.

Caucasian Boys Show Highest Prevalence of Color Blindness Among Preschoolers“The first major study of color blindness in a multi-ethnic group of preschoolers has uncovered that Caucasian male children have the highest prevalence among four major ethnicities, with 1 in 20 testing color blind. Researchers also found that color blindness, or color vision deficiency, in boys is lowest in African-Americans, and confirmed that girls have a much lower prevalence of color blindness than boys.”

Humans and saber-toothed tiger met in Germany 300,000 years ago

One of the Key Characteristics of Ancient DNA, Low Copy Number, May be a Product of its Extraction – h/t hbd bibliography!

Give it up, Psmithe – steve sailer on greg clark’s The Son Also Rises.

Why I am now skeptical of the hypothesis that dysgenics has had substantial real-world effects – elijah (doin’ his superman thing (~_^) ).

El capital humano de las naciones: ¿Más allá de PISA? – h/t billare! who tweeted: “Take Lynn & Vanhanen’s 2012 estimates, correlate them to PISA math & science results, find an r of 0.98.”

The grasping reflex of babies: a vestigial trait? – from jerry coyne.

Social influence constrained by the heritability of attitudes – h/t andrew sabisky! who tweeted: “more heritable attitudes are more resistant to social pressure.”

What Are Relatives Good For?“The battle over every aunt and uncle’s favorite evolutionary theory.”

Genetic Influences Are Virtually Absent for Trust“Here we examine a population-based sample of 1,012 twins and relatives. We show that the genetic influence on generalized trust in other people (trust-in-others: h2 = 5%, ns), and beliefs regarding other people’s trust in the self (trust-in-self: h2 = 13%, ns), is virtually absent…. We show that, relative to cognitive abilities, psychiatric disorders, and classic personality variables, genetic influences are smaller for trust, and propose that experiences with or observations of the behavior of other people shape trust more strongly than other traits.” – h/t rene bekkers!

Psychopaths: how can you spot one?“But is psychopathy a disorder – or a different way of being…? If someone’s brain lacks the moral niceties the rest of us take for granted, they obviously can’t do anything about that, any more than a colour-blind person can start seeing colour. So where does this leave the concept of moral responsibility? ‘The legal system traditionally asserts that all people standing in front of the judge’s bench are equal. That’s demonstrably false,’ says the neuroscientist David Eagleman, author of Incognito: The Secret Lives of the Brain. He suggests that instead of thinking in terms of blameworthiness, the law should deal with the likelihood that someone will reoffend, and issue sentences accordingly, with rehabilitation for those likely to benefit and long sentences for those likely to be long-term dangers.” – h/t (heh! (~_^) ) heartiste!

IQ, Neuroticism, booze, and those damn vegetables again – from dr. james thompson.

Tweet of the Week“‘[H]umans are very good at attributing causality when it does not exist. That has led to confusion between correlation and cause on an industrial scale, not least in attempts to work out the effects of diet on health.’” – @jayman’s.

Is there a gene for procrastination? – there’d better be or else i’m all outta excuses! (*^_^*) see also: Genetic Relations Among Procrastination, Impulsivity, and Goal-Management Ability – Implications for the Evolutionary Origin of Procrastination.

Biological evidence of positive and negative people in the world“The ability to stay positive when times get tough — and, conversely, of being negative — may be hardwired in the brain, finds new research.”

“Grounds of War” – A New Paper on Territoriality with Remarkable “Similarities” to the Work of Robert Ardrey – from helian.

Equal ≠ The Same: Sex Differences in the Human Brain“At the root of the resistance to sex-influences research, especially regarding the human brain, is a deeply ingrained, implicit, false assumption that if men and women are equal, then men and women must be the same. This is false. The truth is that of course men and women are equal (all human beings are equal), but this does not mean that they are, on average, the same. 2 + 3 = 10 – 5, but these expressions are not the same. And, in fact, if two groups really are different on average in some respect, but they are being treated the same, then they are not being treated equally on average.”

Inbreeding is associated with lower 2D: 4D digit ratio. – in turkey. meanwhile, classic post from heartiste: Is Finger Length Ratio Evidence Of A Woman’s Fidelity?

diana fleischman speculates on that “perceived intelligence of faces” research that came out recently.

Thinking about a majority-minority shift leads to more conservative views“Facing the prospect of racial minority groups becoming the overall majority in the United States leads White Americans to lean more toward the conservative end of the political spectrum, according to research. The findings suggest that increased diversity in the United States could actually lead to a wider partisan divide, with more White Americans expressing support for conservative policies.”

The ‘Love Hormone’ Can Make You Hate: Study“A study from the Netherlands suggests that oxytocin might only make you love people in your in-group, and can contribute to conflict with outsiders.”

Bacteria Turn Plants and Insects into Zombies“A parasitic phytoplasma deploys proteins to manipulate the plants it infects as well as the insects that spread the microbe.”

Zombie Snipers at the Doorstep“Colony-living insects like ants have a kind of social immune system — they behave in ways that prevent infections from spreading through their nests. They clean each other and remove the corpses of their nestmates. Sick ants, which have been infected by killer fungi, are often shunned by their fellow workers, and sometimes leave the nest to die alone.” – h/t john durant!

Germs Rule the World“The new germ theory: Infections play a role in many, many diseases—in ways we’re just beginning to understand.”

The Remarkable Self-Organization of Ants“It turns out that ants perform these complex tasks by obeying a few simple rules…. The organization of insect societies is a marquee example of a complex decentralized system that arises from the interactions of many individuals.”

The World’s Murder Capitals“[A] group of countries — all of them in either the Americas or Africa — accounting for just 11 percent of the global population are the location of 46 percent of the world’s homicides…. Men accounted for 95 percent of the perpetrators and 79 percent of the victims of homicide in 2012….”

Fearing Punishment for Bad Genes“[M]any people are avoiding the [dna] tests because of a major omission in the 2008 federal law that bars employers and health insurers from seeking the results of genetic testing.” – h/t kevin mitchell!

‘Everything should be open to question’ – h/t claire lehmann!

*A Curmudgeon’s Guide to Getting Ahead*, by Charles Murray. see also “The Curmudgeon’s Guide”: A Q&A with Charles Murray.

bonus: The Moral: Aesop Knew Something About Crows

bonus bonus: Fruit flies maneuver like tiny fighter jets

bonus bonus bonus: This 3000 Year Old Amulet Kind of Looks Like a Gummy Bear

bonus bonus bonus bonus: Measure Yourself by the Standard of the Capybara

bonus bonus bonus bonus bonus: White wing supremacist: swan attacks foreign students – h/t ed west!

bonus bonus bonus bonus bonus bonus: Mike Judge Skewers Silicon Valley With the Satire of Our Dreams“The creator of Beavis and Butt-Head aims his snark cannon at the tech startup scene in his new HBO show, Silicon Valley.”

(note: comments do not require an email. capybara and friend!)

Why We Fight (Over Land)“In the most recent issue of the journal International Security, Monica Duffy-Toft and Dominic Johnson, political scientists at Oxford, argue that a new theoretical framework is needed to analyze such behavior, one rooted in evolutionary biology…. As Duffy-Toft told me an interview today, ‘It comes back to survival and reproduction. There’s an instinct that we need land in order to exist. We need to have the capacity to get resources to live our lives….’ Duffy-Toft acknowledges that the thesis is controversial. While their piece is currently the lead article in International Security, one of the more prestigious journals in the field, it took almost 10 years to get it published. ‘We’re pushing up against real biases in our field,’ she says. ‘Scholars don’t want to admit that our behavior can be constrained by the fact that we’re animals.’ – *sigh* – original research article here [pdf].

Oldest modern human genome from Siberia ~45 thousand years ago“The femur belonged to an H. sapiens man who had slightly more Neandertal DNA, distributed in different parts of his genome, than do living Europeans and Asians.” – @dienekes’.

Human evolution: The Neanderthal in the family“Thirty years after the study of ancient DNA began, it promises to upend our view of the past.”

The phylogenetic and geographic structure of Y-chromosome haplogroup R1a – h/t razib!

Discoveries Challenge Beliefs on Humans’ Arrival in the Americas“[T]he ancient rock art depicts fierce battles among tribesmen….” – h/t steven pinker! who tweeted: “refutes frequent claim of no war before agriculture.”

Cochran-Harpending paper on “Amish Quotient”“‘[T]heir social pattern probably drives strong selection for a particular flavor of personality, which is downright fascinating and worthy of further investigation. One could, with difficulty and a lot of investment, identify dimensions of a hypothetical AQ. It would likely include affinity for work, perseverance, low status competition, respect for authority, conscientiousness, community orientation, and so on. We proposed (Cochran, Hardy, & Harpending, 2006) a similar mechanism to account for Ashkenazi Jewish evolution in Medieval times selecting for ability and success in white collar occupations.’” – from steve sailer. previously @west hunter: Inferring an AQ.

The Son Becomes The Father“The failure of parents to appreciably affect the outcomes of their children affirms Gregory Clark’s findings, and indicates that much of the transmission of status from one generation to the next is ultimately genetic in origin…. Almost certainly, throughout history, and across the diverse societies, that has been a huge amount of ‘noise’ in the transmission of status, especially on the individual level and in the short run. The vagaries of the circumstances no doubt imbued good fortune on some and dashed the success of many others. But through it all, the thing that is at the root of continuity – DNA – remained the active ingredient to propagate lineages in their respective places through out the ages.” – from jayman.

First comprehensive atlas of human gene activity released – h/t mike anissimov!

Sperm competition and Heteropaternal Superfecundation – from greg cochran.

The Holocene Lattice“First, it is now clear that long-range migration, admixture and population replacement have been the rule rather than the exception in human history. Second, the serial founder effect model is no longer a reasonable null hypothesis for modeling the ancient spread of anatomically modern humans around the globe.” – from razib. (emphases in original.)

Percentage of DNA shared amongst the various archaics (including our sapiens sapiens lineage), from a review in Cell – from billare.

Neural portraits of perception: Reconstructing face images from evoked brain activity – whoa. h/t mo costandi!

We Are All Mutants“On the hunt for disease genes, researchers uncover humanity’s 
vast diversity.”

Puerto Rico and IQ: Same as it ever was – from steve sailer.

About That Gene-Environment Interaction Study by Turkheimer et al.“The upshot is that while environmental deprivation may render genetic differences less important in the determination of children’s IQ, the typical black child in this large and downscale sample had apparently not been raised in deprived circumstances any more frequently than the typical white child in the sample. The lower IQs of blacks in this sample cannot therefore be put down to them having been exposed to environments less conducive to the expression of genetic variance in IQ than the environments experienced by whites.” – @human varieties.

People can predict the IQ of men — but not women — by looking at their face, study finds – see also dr. james thompson: The mind’s construction in a face.

Dopamine D4 receptor gene variation influences self-reported altruism“[T]he DRD4 7-repeat allele is associated with lower scores on the NEO-PI-R Altruism facet scale, accounting for about 2% of the variance. As the DRD4 7-repeat allele has been associated with higher scores in impulsive personality traits and ADHD, our result suggests that individual differences in impulsive behavioral tendencies may play a role in the propensity to behave altruistically.” – h/t tom farsides!

How Social Darwinism Made Modern China“A thousand years of meritocracy shaped the Middle Kingdom.” – from ron unz. h/t eduardo zugasti!

Kinder, gentler speech“In sum, when the State imposed a monopoly on the use of violence, it set in motion a process of gene-culture co-evolution with many consequences. Among other things, this process may have favored not only learned ways of speaking but also unlearned ways as well.” – from peter frost.

Crows Understand a Fundamental Part of Logical Reasoning“Crows are far more rational than we had realized. New research shows that wild New Caledonian crows can compete with 7-year-old children when it comes to understanding causality, or how one action causes another.” see also: Crows understand water displacement at the level of a small child: Show causal understanding of a 5- to 7-year-old child.

Do animals have a sense of humour? – koko the gorilla “once tied her trainer’s shoelaces together and signed ‘chase’.” (^_^) (^_^) (^_^) – h/t steve stewart williams!

On “Male” vs. “Female” Brains – twitter convo on sexual dimorphism in human neuro-whatsits. kevin mitchell ftw!

“Natural Law” and Other Rationalizations of Morality“People worry about a ‘grounding’ for morality. There’s really no need to. As Marc Bekoff and Jessica Pierce pointed out in Wild Justice – The Moral Lives of Animals, there are analogs of moral behavior in many species besides our own…. Other animals don’t wonder why one thing is good and another evil. They’re not intelligent enough to worry about it. Hominids are Mother Nature’s first experiment with creatures that are smart enough to worry about it. The result of this cobbling of big brains onto the already existing mental equipment responsible for moral emotions and perceptions hasn’t been entirely happy. In fact, it has caused endless confusion through the ages.” – from helian.

Inclusive fitness theory for the evolution of religion“We describe and evaluate an integrative hypothesis for the origin and evolution of human religious cognition and behaviour, based on maximization of inclusive fitness. By this hypothesis, the concept of God is represented by one’s circle of kin and social salience, such that serving God and serving this circle become synonymous. The theory is supported by data from anthropology, evolutionary theory, psychology, neuroscience, psychiatry, endocrinology and genetics.” – h/t claire lehmann!

Are liars ethical? On the tension between benevolence and honesty“[I]ndividuals who tell prosocial lies are perceived to be *more* moral than individuals who tell the truth.” – h/t zhana vrangalova!

Speculations on the Evolution of Awareness“The ‘attention schema’ theory provides one possible account of the biological basis of consciousness, tracing the evolution of awareness through steps from the advent of selective signal enhancement about half a billion years ago to the top-down control of attention, to an internal model of attention (which allows a brain, for the first time, to attribute to itself that it has a mind that is aware of something), to the ability to attribute awareness to other beings, and from there to the human attribution of a rich spirit world surrounding us. Humans have been known to attribute awareness to plants, rocks, rivers, empty space, and the universe as a whole. Deities, ghosts, souls-the spirit world swirling around us is arguably the exuberant attribution of awareness.” – h/t neuroskeptic!

Mugshots Built from DNA Data“A computer program crudely predicts facial structure from genetic variations.”

The Oldest Living Things On Earth“Starting in the 1960s, evolutionary biologists have searched for an overarching explanation to account for all the different ways to grow old. The best-supported ones so far are variants on the old truth that a jack-of-all-trades is a master of none. An organism can collect a finite amount of energy, whether it’s a lion killing gazelles, a tulip capturing sunlight, or a microbe breathing iron at the bottom of the sea. It can use that energy to grow, to produce offspring, to defend itself against pathogens, to repair damaged its damaged molecules. But it has a limited budget. The energy spent on one task is energy that can’t be spent on others. Molecular repair and pathogen defense are both good ways to live longer. But a long-lived organism that produces few offspring will not pass on many copies of its genes to future generations. The organisms that will succeed are the ones that do a mediocre job of keeping their bodies in order, leaving more energy for making babies.” – h/t billare!

Mutation, Not Natural Selection, Drives Evolution – according to masatoshi nei: “Every part of our body is controlled by molecules, so you have to explain on a molecular level. That is the real mechanism of evolution, how molecules change. They change through mutation. Mutation means a change in DNA through, for example, substitution or insertion [of nucleotides]. First you have to have change, and then natural selection may operate or may not operate. I say mutation is the most important, driving force of evolution. Natural selection occurs sometimes, of course, because some types of variations are better than others, but mutation created the different types. Natural selection is secondary.”

End the Hype over Epigenetics & Lamarckian Evolution“They insist that characteristics many researchers assume to be the result of epigenetic inheritance are actually caused by something else. The authors list four possibilities: Undetected mutations in the letters of the DNA sequence, behavioral changes (which themselves can trigger epigenetic tags), alterations in the microbiome, or transmission of metabolites from one generation to the next. The authors claim that most epigenetic research, particularly when it involves human health, fails to eliminate these possibilities.” – h/t jayman!

New warning about ‘Celtic Curse’ blood iron disease“Hemochromatosis is a hereditary disease, linked particularly to Irish and those of Irish origin. It causes your body to absorb too much iron from the food you consume. The excess iron becomes stored in your organs, especially your liver, heart and pancreas. It can lead to life-threatening conditions such as cancer, heart problems and liver disease. Those with Irish heritage have a significantly greater chance of carrying the gene mutation that can contribute to the deadly disorder. Some experts believe that hemochromatosis originated more than 40,000 years ago in Ireland when genes mutated allowing the population to over-absorb iron, to compensate for a poor iron diet.” – h/t 23andMe!

The state is the worst wicked stepmother of all“[T]he number of children raised without one of their parents has increased sharply in recent years, partly due to changing sexual mores but also the involvement of the state itself; the largest increase in non-marital births came after the 1977 Homeless Persons Act gave lone mothers priority on housing lists. The Tory MP behind this proposal wrote, ‘The sad truth is that, until now, the Wicked Stepmother would have got away scot-free.’ Possibly, but there would not have been so many wicked stepmothers, or stepfathers, or mother’s current boyfriends, without the state in the first place.” – from ed west.

Pseudoescepticismo y biodiversidad humana“Desde hace años, sin embargo, existe una tendencia ideológica inflacionaria en el movimiento escéptico que tiende a alejarse del ‘núcleo’ original, cuyos contornos de todos modos son imprecisos (¿es la parapsicología una ciencia?). El inconveniente es que este alejamiento del núcleo, yo lo llamaría ‘escepticismo inflacionario’ o simplemente pseudoescepticismo, desdibuja los criterios de demarcación y hace que los nuevos temas sean más y más propensos a la contaminación moral e ideológica…. Un caso bastante claro es la campaña ‘escéptica’ de descrédito contra la psicología evolucionista, que sólo ha convencido a un pequeño grupo. ¿Pudiera ser que el empeño de grupos ‘escépticos’ de asimilar el movimiento de biodiversidad humana con el ‘racismo científico’ y con la ‘pseudociencia’ (la falacia moralista siempre merodeando) corriera una suerte parecida?” – @la revolución naturalista.

Response to ‘Fists of furry: at what point did human fists part company with the rest of the hominid lineage?’“A Swedish study on interpersonal violence reported 63 facial fractures and 57 concussions inflicted by fists, but only eight fractures of the metacarpal or phalangeal bones (Boström, 1997). Thus, human fists are effective weapons and, when humans fight, faces break more frequently than fists.” – h/t john hawks!

Sexually Transmitted Virus Sterilises Insects, Turns Them On“[O]ne particular insect virus can sterilise crickets, but also change their behaviour so they continue to mate with each other. By doing so, they pass the virus on to uninfected hosts.”

Ancient African cattle first domesticated in Middle East, study reveals“The genetic history of 134 cattle breeds from around the world has been completed by a group of researchers. In the process of completing this history, they found that ancient domesticated African cattle originated in the ‘Fertile Crescent,’ a region that covered modern day Iraq, Jordan, Syria and Israel.” – h/t anthropology tip!

Autism characteristics differ by gender, studies find – h/t hbd bibliography! also: Autism begins in pregnancy, according to study: Cortical layers disrupted during brain development in autism – h/t mr. robert ford!

Men ‘size-up’ male competition by watching dance moves” The results revealed that handgrip strength and arm movements of the dancers were predictors of dance quality ratings. Both men and women rated stronger males with larger, more variable and faster arm movements as better dancers. However, men picked up clues of upper-body strength from male dancing more accurately than women.” – previously: “you should be dancin’ yeah!”

A Study of Twins, Separated by Orbit“While circling the earth aboard the International Space Station for a full year — the longest single space adventure for any American astronaut — and after his return, scientists will closely monitor Commander Kelly to see what changes space has wrought. NASA has been studying the effects of long stays in space on astronauts for years, but this set of 10 investigations will be different: The scientists will be doing the same poking, prodding and analyzing on Commander Kelly’s identical twin brother, Mark, a retired astronaut.”

A simple but elegant method to detect election fraud and irregularities. – from randy olson.

bonus: Game of Thrones tells the story of Britain better than most histories“The popular TV drama gives a vivid idea of how people might have behaved in the Middle Ages – which is brutally” – from ed west. and coming out on thursday!: Ebook on the history behind ‘Game of Thrones’ – by ed west. what does he mean, “there aren’t really dragons”??!?

bonus bonus: L.L. Cavalli-Sforza. A bird in a gilded cage. – new ebook from peter frost!

bonus bonus bonus: Advice for a Happy Life“Consider marrying young. Be wary of grand passions. Watch ‘Groundhog Day’ (again).” – from charles murray.

bonus bonus bonus bonus: The War Nerd: Who exactly are the Jihadis (and why aren’t there more of them)?“There’s one simple generalization you can make from these stats: Jihadis from Muslim-majority countries are generally higher-status than those from countries where Muslims are a minority.” – h/t michael “the sailor” story!

bonus bonus bonus bonus bonus: Neurosurgeons successfully implant 3D printed skull – whoa.

bonus bonus bonus bonus bonus bonus: Woolly Mammoths Suffered Major Birth Defects Before Extinction“According to the researchers, this influx of birth defects could have come about in two different ways. The genetic mutations could have arisen from inbreeding depression. As mammoths were reduced in number, genetic diversity would have plummeted and the number of mutations would have risen sharply. The other explanation offered states that expecting mothers would have been under considerable stress as the population dwindled. This prenatal stress could have had negative consequences for fetal development.” – h/t avi tuschman!

bonus bonus bonus bonus bonus bonus bonus: A Day in the Life of an Ancient Athenian Citizen – from blowhard, esq. h/t ray sawhill! (for some reason, i always crave a cocktail after visiting uncouth reflections…. (^_^) *hic*)

bonus bonus bonus bonus bonus bonus bonus bonus: Greatest Invention in Human History Helps You Avoid Certain People“The era of antisocial networking has begun with the development of apps such as Cloak, which identifies locations of your contacts so you don’t have to see them.” – FIIIInally!

bonus bonus bonus bonus bonus bonus bonus bonus bonus: Absurd Creature of the Week: The 6-Foot Earthworm That Sounds Like a Draining Bathtub – h/t charles (aka the doctor! (^_^) )!

(note: comments do not require an email. gippsland earthworm!)

this is my response to jayman’s post of yesterday, Where HBD Chick’s Hypothesis Works. i was going to leave these thoughts in a comment to his post, but i quickly realized that my comment was going to be pretty long, so i figured i’d just make it a post here. i should just say at the outset that i agree with pretty much everything jayman had to say (^_^) — with a couple of minor quibbles — so this comment will mostly be me rambling about those, plus i’ll be throwing in a couple of “thoughts for future research.” you should definitely go read his post first if you haven’t already before reading my comments. pay attention to his map of how well the hypothesis works in different areas — it’s great! (^_^)

ok. jayman says:

“As we see, from what we know of historic mating patterns and behavior of people today, HBD Chick’s hypothesis works excellently across much of the world. This is especially true across Europe, the Middle East, and much of the Muslim world, and in China.”

yes. on several occasions i’ve wondered if this inbreeding/outbreeding idea really applies mainly, or only, to the indo-european world + the arabs. but the situation of china seems to fit well, too, so i think the general theory is probably more widely applicable (assuming for a sec that it’s correct at all — which it might not be). as i’ll argue below (one of my quibbles), i think the theory might also hold pretty well for japan although Further Research is RequiredTM. (actually, Further Research is RequiredTM for most areas of the world — especially lots of actual genetic/real scientific research!)

more from jayman:

“There are however a couple of places that don’t seem to fit as well. Most poignant of these is sub-Saharan Africa. HBD Chick’s hypothesis doesn’t cover much of Africa, especially the non-Muslim parts. It’s unclear if the historic mating among non-Muslim Blacks was particularly consanguineous (though it was, and remains in many places, polygynous). However, as we clearly know, sub-Saharans do behave like considerably clannish people in some ways, yet a lot more like typical outbreeders in other ways.”

even though i haven’t posted much about sub-saharan africa — yet! — i have been reading up and taking notes on the mating patterns of sub-saharans africans, and let me tell you — there are a LOT of sub-saharan african populations (tanzania alone has more than 120, or more than 260, ethnic groups depending on how you count them! whew!), so, as you can imagine, there is a wiiiide variety of mating patterns on the continent. if i were to make an off-the-cuff guess from what i’ve read so far, i’d estimate that maybe 40%-50% of sub-saharan populations currently practice cousin marriage or did in the recent past (none of them practice the really inbred fbd marriage type of the arabs — except for some northern muslim populations — and even they don’t marry their fbds as consistently as the arabs do). that is just a guess, though. and, then, there’s the polygamy, which also serves to narrow the genetic relatedness in populations, and, so, might trigger similar selection processes for “genes for clannishness” (whatever they might be). and polygamy seems to be very common throughout sub-saharan africa — it’s found almost everywhere (although not everyone can afford to practice it, of course).

the trick will be to try and reconstruct, if at all possible, the historic mating patterns of sub-saharan african populations, especially since historical records for the continent are few and far between. there are historic records for some sub-saharan populations, mainly dating from post-european contact times, of course, and many of them might be useful — a lot of missionaries were hobby ethnographers and recorded loads of cultural data about the people they hoped to convert. genetic data would no doubt be more useful still. (btw, see what i had to say about the mating patterns of african americans and the igbo of nigeria in the comments thread over on jayman’s blog.)

in jayman’s paragraph above, he referenced this old post of mine — civic societies ii — in which i pointed out that the sub-saharan africans surveyed in the world values survey are quite civic, i.e. they are frequently active in voluntary organizations, much more so than peoples in the middle east or eastern europe (see the charts in that previous post). that seems, to me, to be an outbred trait — at least it is very characteristic of northwest europeans. the bamileke of cameroon, too, have a lot of non-familial associations in their society, and they have probably avoided cousin marriage for at least a couple of hundred years.

seven sub-saharan african countries were included in those world value survey results (see this post) — burkina faso, ethiopia, ghana, mali, rwanda, south africa, and zambia — a selection which offers a fairly good regional spread around the continent. i should drill down into those world values survey results to see if i can find out more specifically which subgroups in those populations (if any in particular) were surveyed in each of the countries, and i should try to find out more about the historic mating patterns of those groups. there’s a plan for some future blogging right there!

from jayman again:

“However, farther south in Africa are the San hunter-gatherers (the Bushmen), who were intentional outbreeders, with marriage occurring across tribes. However, overall rates of violence among them are comparable to those found in their Bantu neighbors.”

ack! i still haven’t read more about the bushmen. put that down on the Further Research is RequiredTM list as well!

and this:

“Muslim Central Asia (including the Uyghur province) hasn’t been directly looked at by HBD Chick. But presumably mating patterns there have been similar to the rest of the Muslim world, which would seem to explain the levels of clannishness and corruption there.”

from what i’ve read, the central asians — especially in all of the -stans — tend to avoid any marriage within the paternal clan out to the seventh generation, so in that way they are very unlike the arabs and pakistanis and afghanis. father’s brother’s daughter (fbd) marriage really does seem to have stopped at the edges of the eighth century caliphate. in some regions of central asia, there is also an avoidance of close cousin marriage within the maternal line out to the third generation; in other places central asians do marry their first and second cousins in the maternal line — or have done until fairly recently. this fits with the broader preference of mother’s brother’s daughter (mbd) marriage in asia (where cousin marriage occurs). also, these patterns of avoiding marriage especially in the paternal line, and even sometimes in the maternal line, matches with at least some of the subgroups in tibet. as we saw the other day, first cousin marriage was commonplace in and around lhasa (at the very least) in the 1700s, but has disappeared since that time. perhaps close cousin marriage was also more common throughout central asia and has disappeared in more recent times — or is still in the process of disappearing. dunno. Further Research is RequiredTM.

“India and Southeast Asia also haven’t been discussed much by HBD Chick, either.”

india. *sigh* gotta love india (and indians!) for all of its anthropological diversity, but i have to admit that i have been avoiding india due to the complexity of the mating patterns there. all of those castes!! *sigh* the one very, very general broad pattern that i do know about india right now is that consanguineous marriages are more frequent in southern india than in the north (see the map on consang.net) AND a lot of those consanguineous marriages have been awfully close — uncle-niece marriage is common in southern india — up until very recently (there’s still quite a bit of uncle-niece marriage in the south nowadays, i believe). so, if the theory’s right, then (looking away from the muslims and christians and sikhs, etc., and just focusing on the hindus) there ought to be more clannishness and nepotism and corruption in southern india than in the north. i don’t know if that’s the case or not, but that ought to be how it is. the population ought to be more clannish in the south. similarly, there ought to be more clannishness/corruption/etc. in southern than in northern china — and i do know that clans are more important in southern china than in the north. again, need to try to reconstruct if close marriages were common historically in india and/or china — this should be easier for these populations than for africa since india and china are, obviously, literate civilizations and have been for many millennia.

southeast asia i just haven’t gotten around to yet, unfortunately.

“The Muslim sections of Southeast Asia fit the pattern seen with the core Muslim world, it would seem.”

yes and no. like the central asian muslims — and unlike the arabs/pakistanis/afghanis — the muslims of southeast asia probably avoid fbd marriage. it would be interesting to know if the population of aceh province in indonesia happens to practice particularly close marriage, though, since they have some of the strictest islamic codes of anywhere in indonesia.

jayman again:

“And the Papuan people of New Guinea are famous for being the most tribal people in the world, with the island hosting over *1,000* different languages!

like sub-saharan africans, png-ers have a wide variety of mating patterns! some groups absolutely, definitely have a preference for marrying close cousins while others outbreed. look for a post real soon on some apparent outbreeders from png — the baining!

more jayman!:

“Korea and especially Japan do not fit quite as seamlessly. Japan has had a history of cousin marriage, and the situation in Korea is unclear. Yet neither country is fractured into mutually distrustful clans as is China. Indeed, Japan has a functioning ‘commonweal’ society. However, it is not necessarily like the outbred Northwest Europeans either, possessing some characteristics of a clannish society [those are all unique links in this sentence-h.chick]. It is possible that these countries, like Finland & Iceland in Europe, are also ‘inbetweeners’ of sorts, and possess a distinct hybrid between clannish and non-clannish, as was the topic of my post Finland & Japan.”

yeah. can’t tell you anything at all about korea, because i still haven’t read up on korea yet! (except what misdreavus told me, which is that the upper classes in korea avoided close marriages. interesting.)

japan. yes, japan. japan is probably some sort of “inbetweener” group like jayman suggests — inbetweeners being not extremely inbred (like the arabs) but not being very outbred either (like northwest europeans). japan is apparently not as squeaky clean civic-wise as most of us think, although obviously the japanese are WAY more civically behaved than most peoples! if you look at anatoly karlin’s corruption reality index, the japanese actually score lower than most northwest europeans, and group together with bulgaria, croatia, france, and argentina, as far as corruption goes. and nearly as bad as italy! in 2010, nine percent of japanese people responded that they had to pay a bribe during the previous year, whereas zero percent of danes reported this, one percent of british people, two percent of germans, and five percent of americans. (meanwhile, eighty-nine percent of liberians did! and eighty-four percent of cambodians.) i also had a researcher tell me that, in a study which they conducted (not published yet, i don’t think), the japanese actually scored pretty low on interpersonal cooperation tests — which surprised these researchers. so, something is up with the japanese. they did marry close cousins at a pretty significant rate (ca. 22% — that’s roughly half the rate of sicilians in the early twentieth century) right up into the early twentieth century (see also here). so, i think that the japanese might actually fit the “clannishness” model more than is supposed. they don’t behave as clannishly as the chinese, but they are rather clannish.

jayman had this to say about the japanese and east asians — with which i heartily agree:

“The other possible ingredient could be this: local conditions – often imposed by the State or other local powers – may affect the course of evolution of a people despite the local frequencies of inbreeding/outbreeding. We see this to an extent in China, where considerable genetic pacification – under the direction of the State – served to reduce aggressiveness of the Chinese people despite their considerable clannishness. Perhaps this explains what we see in Japan.”

also this:

“As well, of course, the initial characteristics of the people in each of these areas may have some bearing on their outcomes today, as these traits may affect the precise course of evolution in these places.”

absolutely!

the other populations of the world that jayman mentions that i haven’t discussed (like australian aborigines) i just simply haven’t researched. yet! Further Research is RequiredTM! (^_^)
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i’m obviously not the first person to think that mating patterns + inclusive fitness might affect the selection of genes related to social behaviors. that would be william hamilton [pdf]. other population geneticists have played around with the idea, too. in the blogosphere, steve sailer was the first to connect cousin marriage with things like nepotism and an absence of (liberal) democracy in societies — after parapundit pointed out the odd connection between those things in the middle east. even saints augustine and thomas aquinas (and st. ambrose, btw) figured there was probably a connection between mating patterns and the structures and functioning of a society. so does the economist avner greif [pdf], although he doesn’t consider the biological side of it (which is completely ok!).

furthermore, the historian michael mitterauer — who specializes in the history of the european family — understands that there is some sort of connection between mating patterns and family types and size (and the functioning of society), although he doesn’t grasp that the explanation is probably biological either (which is completely ok!). (the more inbred the larger the family; the more outbred, the smaller — i think.) and all sorts of thinkers from engels to weber to durkheim to todd have figured out, in different ways, that family types and structures affect the workings of society.

so even if the specific inbreeding/outbreeding theory discussed on this blog is wrong, i think it’s valuable to examine the mating patterns and family types of human populations. who mates with whom — in other words, the ways genes flow through a population down through the generations — has got to be one of the more important topics in population genetics, afaics! and, at the very least, the prevalence of specific family types in populations must affect selection pressures, since families are a large part of the social environment in any society.

in any event, i just personally find all the different mating patterns and family types interesting! especially in the light of sociobiology. so i’m probably not going to stop blogging about them any time soon. don’t say i didn’t warn you! (~_^)

oh, and very importantly — thanks, jayman! (^_^)

(note: comments do not require an email. albatross!)

for your consideration, a review by andrew sabisky of tatu vanhanen‘s Ethnic Conflicts: Their Biological Roots in Ethnic Nepotism (links added by me). thanks, andrew! (^_^)

Ethnic Conflicts: Their Biological Roots in Ethnic Nepotism – some thoughts

Nationalism, once thought to be a monster whose thirst for blood had been thoroughly slaked by mass warfare, is making a resurgent comeback throughout Europe. Ostensibly fired by opposition to both Islam and the European Union, Marine le Pen & Geert Wilders – amongst others – have made major polling gains: future electoral victories promise or threaten, depending on your point of view. Golden Dawn have already achieved ballot box success in Greece. Robert Putnam’s work shows that interindividual trust in America has undergone a spectacular decline since the 1960s, accompanying the rise of ethnic diversity. In fact, recent modeling by unwilling sociologists shows that not even in 20 million possible worlds can ethnic diversity increase without a consequent decrease in community harmony. But why?

Tatu Vanhanen, perhaps best known in the Anglosphere for his co-authorship (with Richard Lynn) of such blockbusters as IQ and Global Inequality and IQ and the Wealth of Nations, has some answers. Vanhanen, inspired by the work of renowned scholars such as Pierre van den Berghe and J. Philippe Rushton, traces the roots of ethnic conflict to the sociobiological theories of inclusive fitness and genetic similarity. Despite vast variation within ethnic groups, members of ethnic groups will, on average, be more closely related to each other than random members of other ethnic groups, making ethnic nepotism an evolutionarily adaptive strategy. Ethnic nepotism is family nepotism writ large; the same process is driven by selfish genes aiding the replication of identical genes resident in related others. Ethnic groups are super-families, though the degree of difference between families varies. Races separated by geography for millennia differ more greatly than more recent cleavages within the Indo-European language-family (for example).

So far, so mainstream – at least in sociobiological terms anyway. The most intriguing aspect of Vanhanen’s introduction was his definition of ethnic conflict. I had been expecting ethnic conflict to be operationalized purely in terms of violence, an expectation aided by the macabre pile of skulls on the front cover. But Vanhanen includes peaceful conflict as well: his model incorporates all forms of intra-nation ethnic division, whether they take the form of political parties politely debating in parliaments, or destructive mobs engaged in ethnic cleansing. His scale has 5 levels: at level 2, for example, political parties or major interest groups are routinely organized along ethnic lines, and some level of discrimination is present. At level 4 discrimination and repression are high and systematic, and there is some serious level of civil warfare or terrorism.

Anyway, after compiling and computing data for 176 nations, Vanhanen reveals that the level of ethnic heterogeneity explains 66% of the variance in the level of ethnic conflicts, the remainder to be explained by other factors and measurement error. The expected relationships between democratization and national income levels and ethnic conflicts exist, but are weak. Intriguingly, he notes that while democratization does not reduce ethnic conflict much, it does tend to reduce violence somewhat; the countries with high levels of ethnic heterogeneity but lower-than-expected levels of strife tend to be either democracies of decent quality or strong autocracies. The two successful recipes for restricting ethnic violence seem to be either democratic institutions specifically adapted to the demands of blood, or the brutality of a hegemonic dictatorship, though obviously the sample sizes for countries with large residuals are not particularly great. Vanhanen also notes that high levels of interracial marriage seem to lead to more stable situations than one might expect, though such a strategy perhaps comes with other costs.

This is just a very brief sketch of Vanhanen’s work, which is well worth exploring in more depth. His nation-by-nation account of the factors that perhaps account for each country’s position on the regression line is fascinating and not something I can do justice to here (so please do buy your copies from Richard Lynn’s Ulster Institute).

As mass immigration irrevocably changes the face of the West, when will it also change our political cultures? Can they adapt to the new and unexpected requirements of sociobiological logic? The implications are intriguing to trace. In the face of declining trust and divergent genetic impulses, can the British constitution – which has until now defied codification – survive? Perhaps the rules of the game will need to be written down in one place in the future – until now we have rather muddled by on trust and precedent. Will institutionalized power-sharing (as in Northern Ireland) become the norm in the West – not between Catholic and Protestant, but between Muslim and non-Muslim (by around 2050 Britain is forecast to be a majority Islamic nation on current birthrate trends)? How much internal resistance will there be to the adaptation of current institutions? How much of the resistance, and counter-resistance, will be violent?

These questions are currently not a significant part of political debate, but Vanhanen’s incisive and clearly written work suggests that perhaps they should. I confidently recommend it in the expectation that many potential readers will derive their own interesting and worthwhile hypotheses from his data and analyses.

from long-term mating patterns. there. i said it! (~_^)

just to remind everybody — emmanuel todd is a french historian/anthropologist/demographer/sociologist/political scientist who, amongst other things, has (more or less correctly, imho) noticed a connection between family types (nuclear, extended, clan, etc.) and ideology (capitalism, communism, christianity, islam, etc.). see his The Explanation of Ideology: Family Structures and Social Systems (and my previous post “l’explication de l’idéologie”).

here is a summary of todd’s family types, where he found them, and some of their fundamental characteristics and related ideologies (again, see previous post for more — see also this chart from craig willy):

absolute nuclear family
- no cohabitation of married children with their parents
- no marriage between the children of brothers
- anglo-saxons, netherlands, denmark
- christianity, capitalism, ‘libertarian’ liberalism, feminism

egalitarian nuclear family
- no cohabitation of married children with their parents
- no marriage between the children of brothers.
- northern france, northern italy, central and southern spain, central portugal, greece, romania, poland, latin america, ethiopia
- christianity (catholicism); the “liberte, egalite, fraternite” form of liberalism

authoritarian family
- cohabitation of the married heir with this parents
- little or no marriage between the children of two brothers
- germany, austria, sweden, norway, belgium, bohemia, scotland, ireland, peripheral regions of france, northern spain, northern portugal, japan, korea, jews, romany gypsies
- socialism/bureaucratic socialism or social democracy, catholicism. fascism sometimes, various separatist and autonomous (anti-universalist) movements (think german federalism)

exogamous community family
- cohabitation of married sons and their parents
- no marriage between the children of two brothers
- russia, yugoslavia, slovakia, bulgaria, hungary, finland, albania, central italy, china, vietnam, cuba, north india (note that many of these countries, the eastern european ones, also have a tradition of marrying young)
- communism

endogamous community family
- cohabitation of married sons with their parents
- frequent marriage between the children of brothers
- arab world, turkey, iran, afghanistan, pakistan, azerbaijan, turkmenistan, uzbekistan, tadzhikistan
- islam

asymmetrical community family
- cohabitation of married sons and their parents
- prohibition on marriages between the children of brothers, but a preference for marriages between the children of brothers and sisters
- southern India
- hinduism; a variety of communism unlike that found elsewhere

anomic family
- cohabitation of married children with their parents rejected in theory but accepted in practice
- consanguine marriage possible and sometimes frequent
- burma, cambodia, laos, thailand, malaysia, indonesia, philippines, madagascar, south-american indian cultures

african systems
- instability of the household
- polygyny
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the fundamental pattern here is that the family types run from small (and individualistic) to large (and communal) — from nuclear families through to community families. the underlying fundamental pattern — the causal factor — is that the long-term mating patterns run from outbreeding to greater and greater levels of inbreeding (to inbreeding+polygamy in many african societies).

as i said in a previous post where do clans come from?:

“the presence (or absence) of clans in societies is somehow connected to the mating patterns of societies. in fact, it seems to be that a whole range of kinship-based societal types is somehow connected to a whole range of mating patterns: the ‘closer’ the mating patterns in a society, the more ‘clannish’ it tends to be — the more distant the mating patterns, the less ‘clannish.’

“so we see a spectrum of ‘clannish’ societies ranging from the very individualistic western societies characterized by nuclear families and, crucially, very little inbreeding (cousin marriage, for instance) to very tribal arab or bedouin societies characterized by nested networks of extended families and clans and large tribal organizations and having *very high* levels of inbreeding (specifically a form of very close cousin marriage which increases the degree of inbreeding). falling somewhere in between these two extremes are groups like the chinese whose society is built mostly around the extended familiy but in some regions of china also clans — or the medieval scots (especially the highland scots) whose society for centuries was built around the clan (h*ck, they even coined the term!). these ‘in-betweener’ groups are, or were, characterized by mid-levels of inbreeding (typically avoiding the very close cousin marriage form of the arabs).”
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running through todd’s types:

- the absolute nuclear family found in anglo-saxons (the english), the netherlands, and denmark. todd notes that there is no marriage between the children of brothers in societies where this family type is found. in fact, there has been very little cousin marriage of ANY sort in these “core european” societies since the middle ages (see “mating patterns in europe series” below ↓ in left-hand column) — especially in (southern) england and (parts of) the netherlands (i don’t know about denmark). these are the areas of northwest europe — of probably the world — that have been outbreeding the most, since the early part of the medieval period — and they have the smallest families and are the greatest individualists (although i’m not so sure about the danes…).

- the egalitarian nuclear family found in northern france, northern italy, central and southern spain, central portugal, greece, romania, poland, latin america, and ethiopia. again, todd notes there there is no marriage between the children of brothers in these societies, but the key — at least as far as the european societies here go — is that they, too, have mostly been avoiding ALL forms of cousin marriage for a very long time — but NOT QUITE as long, or for as much, as the peoples of the low countries/southern england. The Outbreeding Project of the europeans (as i like to call it) really got going earliest amongst the franks (and the anglo-saxons in kent who had close ties to the franks), and it spread out in all directions across europe from there. so, the populations closest to the early medieval frankish heartland (other parts of northern france, northern italy, spain, portugal) are just one family type step away from the absolute nuclear family — and individualistic, but not as individualistic as the english or dutch. (for more details on these other european countries see “mating patterns in europe series” below ↓ in left-hand column.) i don’t yet know enough about the mating patterns of latin america or ethiopia.

- the authoritarian family, which is a type of stem family (nuclear family+grandparents), found in germany, austria, sweden, norway, belgium, bohemia, scotland, ireland, peripheral regions of france, northern spain, northern portugal, japan, korea, jews, and romany gypsies. todd notes that there is little or no marriage between the children of brothers in these populations, but again, most of the european countries/regions included here have avoided ALL cousin marriage for centuries. HOWEVER, they were mostly part a LATER — sometimes much later (e.g. ireland, highland scotland) — wave in The Outbreeding Project, just like the european egalitarian nuclear families above (for more details see “mating patterns in europe series” below ↓ in left-hand column). the japanese, too, began outbreeding quite latevery late, i believe (but i need to find out more). i don’t know enough about the koreans or jews (i assume todd means ashkenazi jews?) to say. in general, gypsies inbreed (marry their cousins) A LOT. so, as the extent of long-term inbreeding increases, the family size begins to increase.

- the exogamous community family found in russia, yugoslavia, slovakia, bulgaria, hungary, finland, albania, central italy, china, vietnam, cuba, and north india. todd notes that there is no marriage between the children of brothers in these groups, but in most of the eastern europeans populations here (not sure about finland or hungary), The Outbreeding Project arrived much later than in northwestern europe, and marriage between maternal cousins was not unusual in the medieval period (see “mating patterns in europe series” below ↓ in left-hand column). in some of these groups — like the albanians — maternal cousin marriage is probably still common today, or was until very recently. parts of italy, too, especially the farther south you go. maternal cousin marriage was common in china, especially in the south, for millennia (see “mating patterns in asia series” below ↓ in left-hand column). i don’t know enough about the vietnamese or cubans to say. the northern indians (the hindus) tend to avoid cousin marriage, but marry within castes, of course. so we see again that, the longer the history of cousin marriage, the larger the family size. most of these groups have been marrying cousins for several hundreds of years longer than northwestern europeans, and they have large “community” families.

- the endogamous community family found in the arab world, turkey, iran, afghanistan, pakistan, azerbaijan, turkmenistan, uzbekistan, and tajikistan. todd notes that there is frequent marriage between the children of brothers. that is absolutely correct — father’s brother’s daughter (fbd) marriage, which probably originated in the levant, was exported into the arabian peninsula, and spread out from there when the arabs conquered the middle east, north african, and many of the “-stans.” and it just so happens that fbd marriage leads to the greatest degrees of inbreeding possible — and, therefore, these populations have some of the largest family sizes possible (clans and tribes).

- the asymmetrical community family found in southern india. todd notes that maternal cousin marriage is preferred here, and the rates of cousin marriage in southern india — and uncle-niece marriage — are very high. so again, lots of close marriages leads to large, community families.

- the anomic family found in burma, cambodia, laos, thailand, malaysia, indonesia, philippines, madagascar, and south-american indian cultures. todd says that consanguineous marriages are permitted and “sometimes frequent” in these populations — and that adult children often live with their parents (so these families are larger than nuclear families). i don’t know much about the mating patterns in any of these groups, but if consanguineous marriages are frequent in them, it’s not surprising to find large family sizes.

- african family systems found in sub-saharan africa. todd describes them as unstable and polygynous. i know that cousin marriage is common in some but not in others, but i don’t know many details. we shall have to wait and see on sub-saharan africa.
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but hbd chick — maybe populations with large family sizes simply favor close marriages? perhaps it’s all just a coincidence!

no, it’s definitely NOT a coincidence, and we can know that the causal direction is from long-term mating patterns to family size (and various ideologies), because we have the example of europe to show us that.

BEFORE northwest europeans started outbreeding (avoiding cousin marriage) on a regular basis — in the pre-christian era — they had large families — kindreds and clans and tribes (for more details see “general” section and “mating patterns in europe series” below ↓ in left-hand column). and the groups that have been OUTBREEDING THE LONGEST — the english and the dutch (and the danes?) — have the smallest family sizes — and are the most individualistic. and the groups that started outbreeding later — for example the irish and the highland scots — they had larger families and even clans until well into the medieval period. same for eastern europe. and in the balkans, many of those groups are still marrying cousins today (or up until very recently), and they still have extended families and clans.

it’s not clear exactly what the mechanism is, but it must be biological and is, no doubt, related to the concept of inclusive fitness. the natural analogy (heh – see what i did there?) to draw would be to ants and the other eusocial insects (although i know many myrmecologists/entymologists don’t like to connect eusociality and inclusive fitness) — many of the individuals in these insect populations are very closely related, and, so (probably), they come together in very large family groups. other parallels might be to naked mole rats versus other mole rats or to meerkats, but i don’t know the mating patterns/genetic relatedness in those species.

however it actually works, the general pattern is clear: the closer the long-term mating patterns, the larger the family size (and the more family-oriented the populace) — the more distant the long-term mating patterns, the smaller the family size (and the more individualistic the populace — and, yet, more commonweal oriented — at least in europe…).

see also: craig willy’s Emmanuel Todd’s L’invention de l’Europe: A critical summary

previously: “l’explication de l’idéologie” and where do clans come from? and whatever happened to european tribes?

(note: comments do not require an email. nekked mole rat!)

Digesting Milk in Ethiopia: A Case of Multiple Genetic Adaptations“A team of geneticists from UCL, University of Addis Ababa and Roskilde University have shown that five different alleles are found in the Ethiopian population that cause adult lactase production, one of which is newly confirmed.” – h/t andrew badenoch!

Friendship and Natural Selection“More than any other species, humans form social ties to individuals who are neither kin nor mates, and these ties tend to be with similar people. Here, we show that this similarity extends to genotypes. Across the whole genome, friends’ genotypes at the SNP level tend to be positively correlated (homophilic); however, certain genotypes are negatively correlated (heterophilic). A focused gene set analysis suggests that some of the overall correlation can be explained by specific systems; for example, an olfactory gene set is homophilic and an immune system gene set is heterophilic.” – via charles!

Scientists to sequence genomes of hundreds of newborns

Bone dates ‘earliest northerner’, say archaeologists in Liverpool“Liverpool John Moores University and the University of Nottingham analysed a leg bone found in Cumbria and found it to be more than 10,000 years old.” – [winter is coming....]

Convergent evolution seen in hundreds of genes“Bats and dolphins may have developed echolocation via similar mutations.”

Darkness in Anthropology: A Conversation with Napoleon Chagnon“Probably the single most anthropologically unacceptable thing I did was to take ‘biology’ seriously…. I began using commonly known ways to ‘measure’ relatedness between organisms — Sewall Wright’s coefficient of inbreeding and its extended concept, the coefficient of relatedness. This was very unusual in cultural anthropology. In short, I was discussing Yanomamö kinship with *the biological meaning* of kinship in mind — at a time when the vast majority of cultural anthropologists assumed that ‘kinship’ and ‘the biological meaning of Yanomamö kinship’ were, at best, only vaguely similar and any allusion to this was generally ‘suspect.’ But since ‘kinship’ was traditionally a central focus of anthropological theory, I began developing ways to show precisely, using my meticulous genealogies on the Yanomamö, that people took sides in fights according to how closely *genetically* they were related to each other and fought against people they were *less related to genetically*. Many of the most prominent anthropologists held the extreme view that ‘kinship’ among humans had *nothing* to do with the biological meaning of kinship as is assumed in the fields of biology, genetics, or animal husbandry. A common claim was something to the effect that ‘whatever kinship among humans was about, it was NOT about biology.’” – h/t g-nice!

Penn Biologists Show That Generosity Leads to Evolutionary Success – stewart and plotkin “examined the outcome of the Prisoner’s Dilemma as played repeatedly by a large, evolving population of players. While other researchers have previously suggested that cooperative strategies can be successful in such a scenario, Stewart and Plotkin offer mathematical proof that the *only* strategies that succeed in the long term are generous ones.”

Confusions about race: A new installment [pdf] – from neven sesardic. – h/t holtz!

Why Do Black Women Have A Higher Risk of Death from Heart Disease Than White Women? – more atypical symptoms than white women, apparently.

How Inbred are Europeans? – now that’s my kinda post! (^_^) – from jayman.

Arabs and Liberal Democracy: A Primer – @thosewhocansee.

On the Relevance of Science to Morality“[I]ssues of morality can’t be answered by scientific experiments because there are no such entities as issues of morality…. Moral emotions are part of the behavioral repertoire of several species of animals, including human beings.” – helian makes me smile. (^_^)

The Clannish World of Organized Crime“[T]he way clannishness and OC go hand in hand like described above can’t be a coincidence. Rather, it makes perfect sense given the very definitions of these concepts. Clannishness is taking care of yourself and your group, often with violence, at the expense of other people and society. OC can be described in the exact same way.” – oh, yes. – from staffan.

Obesity in Germany: The fault-line divides the nation again – from agnostic.

Why are we the naked ape?“Loss of body hair was a long-term evolutionary trend in ancestral hominids and even ancestral primates, being perhaps a response to a greater need for social signaling. In ancestral humans, the selection pressure seems to have gone through three stages, initially targeting infants and only later women and then men.” – from peter frost.

Are girls too normal? Sex differences in intelligence“Girls are more normal, boys are more extreme, so there are more boys at extremes, and the more extreme the extremes, the more boys.” – from dr. james thompson. – [are girls too normal? - i'm not! (~_^) ]

Spot The Alpha – heh! – from heartiste (who else?).

National stereotypes of business meetings – @steve sailer’s.

Individualism and Collectivism: U.S. State Comparison – from benjamin david steele.

Racial Differences in Masculinity-Femininity? – @the occidentalist. h/t jayman!

The New Science of Mind“Any discussion of the biological basis of psychiatric disorders must include genetics. And, indeed, we are beginning to fit new pieces into the puzzle of how genetic mutations influence brain development.”

Ability to delay gratification may be linked to social trust“A person’s ability to delay gratification — forgoing a smaller reward now for a larger reward in the future — may depend on how trustworthy the person perceives the reward-giver to be, according to a new study….”

Bigger and healthier: European men grow 11cm in a centurybigger is better! (~_^)

A Game of Homs“What striking about Syria is how so many people insist on speaking about it in profoundly moralistic, Manichaean terms. This is complete nonsense, given that its civil war isn’t a showdown between democracy and dictatorship, but an ethnic and religious conflict. Here’s a more realistic guide.” – really good stuff from anatoly!

Ed West interview: debating the ‘illusions’ of a diverse society

America’s greatest days lie ahead – provided she is true to herselft.greer says: “Daniel Hannan(!) reviews America 3.0 and its Emmnauel Todd theory of America.”

Children with behavioral problems more at risk of inflammation“Children with behavioral problems may be at risk of many chronic diseases in adulthood including heart disease, obesity, diabetes, as well as inflammatory illnesses (conditions which are caused by cell damage).”

Slaughtered bodies stripped of their flesh – a gruesome glimpse of Iron-Age massacre at UK’s largest hill fort“Hundreds if not thousands stripped of their flesh and chopped up, say archaeologists.”

Carbon dating shows ancient Egypt’s rapid expansion“The powerful civilisation of ancient Egypt took just a few centuries to build, according to a radiocarbon dating study that sets the first solid chronology for the period…. Archaeologists have assumed it developed gradually from the pastoral communities that preceded it, but physicist Mike Dee from the University of Oxford and his colleagues now suggest that the transition could have taken as little as 600 years.” – see also A chronology of ancient Egypt @dienekes’.

Declassified spy photographs reveal lost Roman frontier“Declassified spy photography has uncovered a lost Roman Eastern frontier, dating from the second century AD. Research by archaeologists at the Universities of Glasgow and Exeter has identified a long wall that ran 60 kilometers from the Danube to the Black Sea over what is modern Romania. It is considered the most easterly example of a man-made frontier barrier system in the Roman Empire.” – trajan’s rampart!

Melting Snow Reveals Iron Age Sweater“A boat neck sweater made of warm wool and woven in diamond twill was a dominating fashion trend among reindeer hunters 1,700 years ago, according to researchers who have investigated an extremely well preserved Iron Age tunic found two years ago under melting snow in Norway.”

bonus: Underwater volcano is Earth’s biggest“Tamu Massif rivals the size of Olympus Mons on Mars.” – cool!

bonus bonus: Evidence Found for Planet-Cooling Asteroid 12,900 Years Ago – which triggered the agricultural revolution…?

bonus bonus bonus: Making Sense of the Syrian Rebels’ Order of Battle

bonus bonus bonus bonus: Two years after Libya’s revolution, government struggles to control hundreds of armed militias – h/t mark krikorian! see also: Special report: We all thought Libya had moved on – it has, but into lawlessness and ruin. =(

bonus bonus bonus bonus bonus: Car-theft epidemic at the border with Poland [and germany] – “Brandenburg police has repeatedly scolded German car owners for being naive. ‘They simply park their cars in the street….’” – imagine that!

bonus bonus bonus bonus bonus bonus: The city that went to the dogs: With 60,000 on the streets, there is one stray for every 31 people in Bucharest

bonus bonus bonus bonus bonus bonus bonus: Poll: Majority Of Americans Approve Of Sending Congress To Syria – heh! (~_^) – via mr. mangan, esq.

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something greying wanderer said recently (thanks, grey!)…

I think at a bare minimum there’ll be family resemblance which on average ought to be increased by inbreeding through linkage effects. I’m not sure if that’s generally accepted or not?”

…got me to thinking about family honor, honor killings, and family likeness.
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first of all, family honor: i haven’t done a systematic study of it yet, but all indications are that family honor is more important — oftentimes much more important — in long-term inbreeding societies than long-term outbreeding ones. family honor expresses itself in behaviors like feuding and honor killings. many of the usual suspects are included here (from wikipedia):

- the middle east – noted example, the bedouins
- turkey
- south asia: afghanistan, pakistan, and india
- china and japan: not so much honor killings as not disgracing the family by failing your exams!
- europe: the mediterranean region – “In Italy, infidelity of women was seen dishonorable, thus crimes of passion were classified as second-degree murders until 1970s.” (from here.)
- the old south (u.s.a.)
- hispanic cultures – including brazil.

and about honor in northern european societies (from here – my emphasis):

“[I]n Northern Europe it has a more individualized meaning that is focused on personal accomplishments and qualities.”

mmm-hmmm.

anyway, so i think it’s pretty safe to bet that family honor issues go together, for whatever reasons (i have my own ideas on the matter, of course), with long-term inbreeding. we’ve seen before that honor killings really seem to be connected to father’s brother’s daughter’s (fbd) marriage, which is mostly practiced in the arab world/north africa/middle east/parts of south asia and which pushes towards greater degrees of inbreeding (than other forms of cousin marriage).
_____

what about family likeness then? do the members of long-term inbreeding families look more like one another, on average, than the members of long-term outbreeding families? do they share more personality traits with one another? do they behave, on average, more like one another? i don’t know — and i don’t know of any research looking into these questions (anybody?).

remember the ghoul family though (hope they’re ok! =/ ) and how similar the brothers look to one another?:

ghoul brothers

are they indicative at all of what you get with long-term inbreeding? i really don’t know.
_____

but let’s assume, just for the sake of argument, that the members of long-term inbreeding families are more like one another on average than the members of outbreeding families, and that the likeness is not just in appearance but also in personality traits, behaviors, etc. perhaps this (if it’s true) might help explain honor killings.

family honor, at least with regard to honor killings, is a public thing. from what i’ve read — and i’m sorry that i don’t have any references at hand at the moment — honor killings usually happen when the trangression becomes publically known, or at least becomes known outside the immediate family. in societies where family honor is important, people don’t typically kill their errant daughters if they can keep their bad behavior a secret — that would be a waste of all the time and effort and money invested in raising her, and it obviously must be emotionally a very difficult thing to do (although maybe the family honor feelings over-ride that to some extent?).

honor killings are a sort of altruistic act, and i mean altruistic in the scientific meaning of the word (from here)…

“[A]ltruism refers to behaviour by an individual that increases the fitness of another individual while decreasing the fitness of the actor.”

…but in the case of honor killings, the altruistic behavior of the actor (the person who kills the daughter) doesn’t result in the decreasing of the actor’s own fitness, but, rather, the daughter’s (obviously). and, then, it’s the fitness of other members of the family that would be increased, namely any young family members who are of reproductive age or younger, since if the family honor is tarnished, it will be difficult, if not impossible, to get spouses for the other children. i half-jokingly referred to this before as “inclusive inclusive fitness” — you’re not sacrificing your own fitness to benefit another’s (whose genes you share), you’re sacrificing someone else’s — but you share a lot of genes with them, too, so in a way you are sacrificing the fitness of your own genes, just not those in your own person.

what if the underlying reason driving honor killings is because, in inbred societies, everybody knows from loooong experience that family members are really *very* like one another, so then, of course, you’d NEVER marry your kid to a member of THAT family because they had that one daughter who behaved very badly, and — conclusion — the rest of the family is probably like that, too?! maybe it’s crucial, then, for a family in an inbreeding society to distance itself from its badly behaving member by sacrificing her (and it usually is a her) in order to show the rest of society that the remaining members of the family do NOT condone the behavior and, implying, that they would never, EVER behave that way themselves.

don’t know. just an idea.
_____

see also: Family honor and Cultures of honour and cultures of law

previously: father’s brother’s daughter marriage and why fbd marriage amounts to more inbreeding than mbd marriage and father’s brother’s daughter (fbd) marriage and honor killings and inclusive inclusive fitness and mating patterns, family types, social structures, and selection pressures

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this is a real head-scratcher…

Can Libya Be Saved?

“Two years ago this month, Tripoli, the capital of Libya, fell to the amalgam of rebel forces that had been closing in on the city. The country’s leader Muammar Qaddafi fled to his home town, Surt, where, on October 20, 2011, rebels stabbed, beat, and shot him to death after his convoy was hit by a NATO missile strike. Qaddafi’s eccentric, forty-two-year dictatorship was over, signalling the apparent end to a dramatic chain of events that had started nine months earlier, in the eastern city of Benghazi. There, inspired by the overthrow of Hosni Mubarak, in neighboring Egypt, Libyans had demonstrated against Qaddafi’s rule, and the protests had turned into a bloody national showdown with security forces. The protesters, eventually assisted by French, American, and British bombers under the NATO banner, succeeded. The smoke had not yet cleared when the victory was being touted as a shining example of what Western powers could do on a modern battleground without ever putting ‘boots on the ground.’

With no further need for war and with Western powers fussing over what was being vaunted as the oil-rich nation’s new democracy, Libya should have once again achieved peace and stability. Instead, the country, of more than six million people, seems to have been fatally destabilized by the war to remove its dictator, and it is increasingly out of control. Militias that arose on various regional battlefronts found themselves in possession of vast arsenals and large swaths of territory. Despite the orchestration of parliamentary elections and the assumption of nominal rule by civilian politicians in Tripoli, those militias have not stood down; instead, they have used their force and their firepower to try to effect change in the capital, even, on several occasions, besieging government buildings. They have also fought one another over long-held regional enmities; the most recent such battle occurred last month….

previously: libyans on democracy: meh and the nyt discovers tribes! and consanguinity in libya… and number of libyan tribes… and all tribes, all the time! and libya update and “tribes mean trouble” and inexplicable rifts in libyan rebel forces

(note: comments do not require an email. libyan tribal map.)

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