linkfest: 06/30/14

The genetics of Mexico recapitulates Native American substructure and affects biomedical traits“We studied genomic variation within Mexico from over 1000 individuals representing 20 indigenous and 11 mestizo populations. We found striking genetic stratification among indigenous populations within Mexico at varying degrees of geographic isolation. Some groups were as differentiated as Europeans are from East Asians. Pre-Columbian genetic substructure is recapitulated in the indigenous ancestry of admixed mestizo individuals across the country. Furthermore, two independently phenotyped cohorts of Mexicans and Mexican Americans showed a significant association between subcontinental ancestry and lung function. Thus, accounting for fine-scale ancestry patterns is critical for medical and population genetic studies within Mexico, in Mexican-descent populations, and likely in many other populations worldwide.” – see also: People from Mexico show stunning amount of genetic diversity“When the team analyzed the genomes of 511 indigenous individuals from all over Mexico, they found a striking amount of genetic diversity. The most divergent indigenous groups in Mexico are as different from each other as Europeans are from East Asians, they report online today in Science. This diversity maps onto the geography of Mexico itself. The farther away ethnic groups live from each other, the more different their genomes turn out to be…. But most people in Mexico or of Mexican descent these days are not indigenous but rather mestizo, meaning they have a mixture of indigenous, European, and African ancestry. Do their genomes also vary by what region of Mexico they come from, or has all that local variation been smoothed out by centuries of different groups meeting, mixing, and having babies? To answer that question, the team collaborated with Mexico’s National Institute of Genomic Medicine, which has been collecting genetic data from mestizos for many years. Somewhat surprisingly, they found that mestizos in a given part of Mexico tended to have the same ‘rare’ genetic variants as their indigenous neighbors. The mestizo genomes ‘track so well with the indigenous groups that we could use the genetic diversity in mestizos to make inferences about [their native] ancestors,’ Pasaniuc says.”

Neanderthal-Human Skulls Shed Light on Evolution“Skulls found in a Spanish cave exhibit both Neanderthal and primitive human features, according to a new study published in the journal Science. The discovery provides clues about when the common ancestor of modern humans and Neanderthals lived, what happened after the two groups diverged, and how the two became so different over a relatively short period of time. There is consensus about the ending of the story: Modern humans and Neanderthals interbred, and Neanderthal DNA is still present in people of European and Asian ancestry. But the thousands of years before they connected, however, have been a mystery.” – see also: Palaeontology: How Neanderthals evolved“A study reveals that not all distinguishing features of hominid skulls have evolved at the same pace.”

Oldest human faeces show Neanderthals ate vegetables – eat your veggies!

Searching for Answers in Very Old DNA – interview with svante paabo.

Island-hopping odyssey brought civilisation to Europe“The farmers who brought advanced civilisation to Europe got there by sailing between the many islands strewn across the Aegean Sea between Greece and Turkey, according to a new genetic analysis. The first modern humans in Europe were hunter-gatherers who arrived around 40,000 years ago. But around 9000 years ago the first farmers arrived. They spread rapidly, dominating the continent by 7500 years ago, and pushing the hunter-gatherers into decline. The farmers originated in the Fertile Crescent in the Middle East, where farming arose, but until now no one knew which route they took to get to Europe.” – see also Publication Delays from greg cochran.

The population genomic landscape of human genetic structure, admixture history and local adaptation in Peninsular Malaysia“Peninsular Malaysia has greater genetic diversity corresponding to its role as a contact zone of both early and recent human migrations in Asia. However, each single Orang Asli (indigenous) group was less diverse with a smaller effective population size (Ne) than a European or an East Asian population, indicating a substantial isolation of some duration for these groups. All four MEGs were genetically more similar to Asian populations than to other continental groups, and the divergence time between MEGs and East Asian populations (12,000—6,000 years ago) was also much shorter than that between East Asians and Europeans. Thus, Malaysian Orang Asli groups, despite their significantly different features, may share a common origin with the other Asian groups. Nevertheless, we identified traces of recent gene flow from non-Asians to MEGs. Finally, natural selection signatures were detected in a batch of genes associated with immune response, human height, skin pigmentation, hair and facial morphology and blood pressure in MEGs. Notable examples include SYN3 which is associated with human height in all Orang Asli groups, a height-related gene (PNPT1) and two blood pressure-related genes (CDH13 and PAX5) in Negritos. We conclude that a long isolation period, subsequent gene flow and local adaptations have jointly shaped the genetic architectures of MEGs, and this study provides insight into the peopling and human migration history in Southeast Asia.”

Investigating brain connectivity heritability in a twin study using diffusion imaging data – h/t jayman! who tweeted: “Surprise, surprise: diffusion imaging twin study (N = 328) finds patterns of brain connectivity are heritable.”

The stability of self-control across childhood“Results indicate that variation [76%] in self-control is predominantly genetic.”

Race a factor in mortality in heart attack patients on anti-clotting drug“The first genetic variations linked to race have been identified that begin to explain a higher risk of death among some African American and Caucasian patients taking the anti-clotting drug clopidogrel after a heart attack. In particular, the team found that two DNA variants common in African Americans were associated with an increased risk of both bleeding and death. In Caucasians, a different variant was linked to additional heart attacks and a higher risk of death.” – h/t hbd bibliography!

A common Greenlandic TBC1D4 variant confers muscle insulin resistance and type 2 diabetes

GWAS-based pathway analysis differentiates between fluid and crystallized intelligence – h/t stuart ritchie! who tweeted: “Distinction between fluid and crystallised IQ at the genetic level.”

A hair-color allele of Neanderthal origin?“60-70% of Taiwanese aborigines have a loss-of-function allele at the main hair color gene, MC1R, yet their hair is as black as humans with the original ‘African’ allele. This seems to be a general pattern in Asians. They have fewer MC1R alleles than do Europeans, and the ones they have produce the same hair color.” – from peter frost.

Physical attractiveness as a phenotypic marker of health: an assessment using a nationally representative sample of American adults“[T]he more attractive a respondent was rated, the less likely he or she was to report being diagnosed with a wide range of chronic diseases and neuropsychological disorders. Importantly, this finding was observed for both sexes. These analyses provide further support for physical attractiveness as a phenotypic marker of health.”

Mellow, Paranoid, Happy, or Mean: Why do people respond so differently to the same drugs?“Although the research hasn’t settled on simple explanations, it’s clear that some combination of personality traits, genetics, and experience affects how people respond to intoxicants.”

How universal is empathy?“Pro-social behavior seems to be a human universal, but is the same true for full empathy?” – from peter frost.

Woodley launches his Victorian defence“The Woodley gang argue that, once they have done a complete re-analysis to respond to the points raised against their original ‘Victorians’ paper, their new results ‘reveal a seemingly robust secular trend towards slowing reaction time in these two countries, which translates into a potential dysgenics rate of −1.21 IQ points per decade, or −13.9 points in total between 1889 and 2004. We conclude by arguing that the best way forward is to test novel predictions stemming from our finding relating to molecular genetics, neurophysiology and alternative cognitive indicators, thus shifting the research focus away from the purely methodological level towards the broader nomological level. We thank our critics for helping us to arrive at a much more precise estimate of the decline in general intelligence.'” – @dr. james thompson’s blog.

HVGIQ: Cambodia and HVGIQ: Turks and Caicos Islands and HVGIQ: Vietnam – from jason malloy @human varieties.

U.S. Ethnic/Race Differences in Aptitude by Generation: An Exploratory Meta-analysis – from chuck @human varieties.

Ability, Effort, and Academic Achievement among Asian Americans – from steve hsu.

andrew “the goth” sabisky on the pisa tests/scores and their implications for education.

The Flynn effect and “real intelligence”(tm) and Why a mental age of eleven and an IQ of 70 are distinct – from elijah.

Embryo selection for cognitive enhancement: curiosity or game-changer?

Power to edit who you are – on CRISPR.

Reading to Newborns Is Probably Useless – from razib.

For One Baby, Life Begins with Genome Revealed“How a California father made an end run around medicine to decode his son’s DNA.” – on razib’s boy! (^_^)

Criminal offending as part of an alternative reproductive strategy: Investigating evolutionary hypotheses using Swedish total population data“Convicted criminal offenders had more children than individuals never convicted of a criminal offense. Criminal offenders also had more reproductive partners, were less often married, more likely to get remarried if ever married, and had more often contracted a sexually transmitted disease than non-offenders. Importantly, the increased reproductive success of criminals was explained by a fertility increase from having children with several different partners. We conclude that criminality appears to be adaptive in a contemporary industrialized country, and that this association can be explained by antisocial behavior being part of an adaptive alternative reproductive strategy.” – h/t mary lou cowan! – chicks dig jerks. – see also You dropped your glove, my liege from the awesome epigone.

Men Who Hate Women – from staffan.

Why women see differently from the way men see? A review of sex differences in cognition and sports – h/t keith laws!

For The First Time, Chimpanzees Are Making A Fashion Statement — Sticking Blades Of Grass In Their Ears“It’s a trend that’s taken a troop of chimpanzees by storm: a blade of grass dangling from an ear. The “grass-in-ear behavior,” as scientists have termed it, seems to be one of the first times that chimpanzees have created a tradition with no discernible purpose — a primate fashion statement, in other words…. There’s no genetic or ecological factors, the scientists believe, that would account for this behavior — only culture.” – but, but, but…where does chimp culture come from?

Faces of Old World monkeys evolved to prevent crossbreeding

No effects of androgen receptor gene CAG and GGC repeat polymorphisms on digit ratio (2D:4D): A comprehensive meta-analysis and critical evaluation of research“In contrast to a small-sample (N=50) initial report, widely cited affirmatively in the literature, meta-analysis of the entire retrievable evidence base did not support any associations between CAG variants and right-hand, left-hand, or right-minus-left-hand 2D:4D. Effects of GGC variants on digit ratios likewise were almost exactly null.” – h/t dr. zhana!

Parents of children with autism often have autistic traits – kid has all his ducks in a row! (~_^) – h/t jason moore!

Sensitive? Emotional? Empathetic? It could be in your genes“Do you jump to help the less fortunate or cry during sad movie scenes? If yes, you may be among the 20 percent of our population that is genetically pre-disposed to empathy, according to a study. The results provide further evidence that highly sensitive people are generally highly tuned into their environment, and provide evidence that especially high levels of awareness and emotional responsiveness are fundamental features of humans characterized as HSPs.” – h/t mr. robert ford!

Negotiating the gap: Four academics and the dilemma of human biodiversity – from peter frost.

Guns & Violence, Again – from jayman.

The Little Divergence“A ‘great divergence’ between the economies of Western Europe and East Asia had unambiguously occurred by 1800. However, there’s a growing body of opinion that this was preceded by a ‘little divergence’ which might have started as early as 1200. I argue that the pre-modern ‘little divergence’ was probably real, but that doesn’t mean it happened because of a modern growth process — a sustained rise in the production efficiency of the divergent economies. The ‘little divergence’ might be only a reflexion of those societies’ Malthusian balance of natality and mortality.” – from pseudo. – see also Addendum to The Little Divergence.

Searching for the “Free Will” Neuron“Gabriel Kreiman’s single-neuron measurements of unconscious decision-making may not topple Descartes, but they could someday point to ways we can learn to control ourselves.”

Denying the Tribe – from claire lehmann.

Mike Lotus Meeting with Emmanuel Todd in Paris, Discussing Todd’s Current Work and America 3.0“Todd spoke about the origins of the Absolute Nuclear Family, as contrasted with the Community Family which predominates in much of Eurasia. Todd said that his most recent book, ‘L’Origine des systemes familiaux’ he shows that the entire history of the world is understood backward. Specifically, the supposedly most backward places are the most advanced. He told me that he had made an absurd mistake in his early book The Explanation of Ideology: Family Structure and Social Systems. He said in Explanation that the distribution of family systems appeared to be random. But, he said, he should have realized that this could not be correct. He took out a pile of printer paper and with rapid strokes sketched an oval and filled in the center, noting that this was the community family area. It was a given that I understood that the oval was Eurasia. He then marked Xs around the periphery for England, Iceland, Finland, France, Japan, Korea, the Philippines all areas which were still individualistic in family structure. He said the book articulates the ‘Principle of Peripheral Conservation.’ The oldest known family structure is the Undifferentiated Nuclear Family (UNF). In England the UNF evolved into the ANF over many centuries. The Community Family forms took four to five thousand years to form and to reach their current state of development. In particular the subjugation of women took a very long time to complete in these systems. In other words, the societies which are currently considered the most modern have as a foundation an archaic family structure.” – h/t t.greer!

A Dozen Words for Misunderstood“Slaying, yet again, the idea that the languages we speak shape the thoughts we think.” – h/t steve stewart williams!

Understanding current causes of women’s underrepresentation in science“[D]ifferential gendered outcomes in the real world result from differences in resources attributable to choices, whether free or constrained, and that such choices could be influenced and better informed through education if resources were so directed. Thus, the ongoing focus on sex discrimination in reviewing, interviewing, and hiring represents costly, misplaced effort: Society is engaged in the present in solving problems of the past, rather than in addressing meaningful limitations deterring women’s participation in science, technology, engineering, and mathematics careers today.”

Breaking the Glass Ceiling? The Effect of Board Quotas on Female Labor Market Outcomes in Norway [pdf] – h/t ben southwood! who tweeted: “Norwegian gender quotas on boards had ‘very little discernible impact on women in business beyond its direct effect.'”

Archaeological cave dig unearths artefacts from 45,000 years ago“An archeological dig has revealed artefacts of early occupation so old they rival the dates of those found at sites of the earliest human settlement in Australia. The discovery of the artefacts of animal bone and charcoal at the Ganga Maya Cave (named by traditional owners meaning ‘house on the hill’) in the Pilbara region of Western Australia are the subject of a scientific paper not yet submitted to archaeological journals.”

Artificial cranial modification in Kow Swamp and Cohuna“This project provides added support for the argument that at least some Pleistocene Australian groups were practicing artificial cranial modification.” – h/t neuroskeptic!

Researchers discover 6,200-year-old schistosomiasis parasite egg“Researchers have discovered what they believe is the oldest ever schistosomiasis parasite egg in a 6,200-year-old grave by the Euphrates river in Syria, potentially providing the first evidence that Middle East agricultural irrigation systems – the artificial application of water to land or soil – may have contributed to the schistosomiasis burden.” – d*mn agriculture! – h/t adam benton @evoanth!

Tablet about payment of donkey debt discovered in Kültepe believed to be oldest trade document – h/t frau katze!

bonus: Assessment of Genetic Variability of Fish Personality Traits using Rainbow Trout Isogenic Lines“The study of inter-individual variability of personality in fish is a growing field of interest but the genetic basis of this complex trait is still poorly investigated due to the difficulty in controlling fish genetic origin and life history…. To this end, seven to ten rainbow trout isogenic lines were screened for their spatial exploratory behaviour, their flight response toward a stressor and their risk taking behaviour. Results showed that some lines seemed less sensitive to new events or environmental changes and could be defined as low responsive, while others were very sensitive and defined as high responsive.” – h/t justin tiehen!

bonus bonus: Meet one of your ancestors: a 505-million-year-old fish

bonus bonus bonus: H. pylori Bacteria Frantically Mutate to Establish Infection“A burst of rapid evolution allows Helicobacter pylori, the bacterium that causes ulcers in humans, to evade the immune system during the early, acute phase of infection. This finding complements earlier work that quantified how quickly H. pylori mutations accumulate during chronic infection. During the acute phase, mutational rates are 30 to 50 times greater than during the chronic phase.”

bonus bonus bonus bonus: An 81 million year herpes infection: First endogenous herpes virus found!

bonus bonus bonus bonus bonus: Scientific proof that dogs don’t like bananas

(note: comments do not require an email. social construct duck vs. social construct duck!)

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linkfest – 12/05/13

another sunday linkfest on a thursday. what IS the world coming to?! =/

Baffling 400,000-Year-Old Clue to Human Origins – denisovans in SPAIN 400,000 years ago! cool. – see also 400 thousand year old human mtDNA from Sima de los Huesos from dienekes. – and see also Hominin DNA baffles experts.

Snakes outpacing other vertebrates in race to evolve“The first two full snake genomes to be sequenced – belonging to the Burmese python and the king cobra – show that they have one of the fastest rates of genetic evolution among vertebrates.”

Earliest Stone-Tipped Projectiles from the Ethiopian Rift Date to >279,000 Years Ago“Projectile weapons (i.e. those delivered from a distance) enhanced prehistoric hunting efficiency by enabling higher impact delivery and hunting of a broader range of animals while reducing confrontations with dangerous prey species. Projectiles therefore provided a significant advantage over thrusting spears…. Direct evidence for such projectiles is thus far unknown from >80,000 years ago. Data from velocity-dependent microfracture features, diagnostic damage patterns, and artifact shape reported here indicate that pointed stone artifacts from Ethiopia were used as projectile weapons (in the form of hafted javelin tips) as early as >279,000 years ago.” – see also Oldest Javelins Predate Modern Humans, Raise Questions on Evolution – h/t naturalismo! – and see also Stone tipped spears used 500,000 years ago – thrusting ones, tho.

Discovery of partial skeleton suggests ruggedly built, tree-climbing human ancestor“Massive arm bones provide insight into how ‘robust’ P. boisei species, found by Leakey, adapted in Africa.”

Iberian Neolithic farmer DNA“‘The Neolithic Portalón individual is genetically most similar to southern Europeans, similar to a Scandinavian Neolithic farmer and the Tyrolean Iceman. In contrast, the Neolithic Portalón individual displays little affinity to two Mesolithic samples from the near-by area, La Brana, demonstrating a distinct change in population history between 7,000 and 4,000 years ago for the northern Iberian Peninsula.'” – @dienekes’.

How genetics are rewriting the history of the Caribbean“The Spanish who arrived in the New World were de facto polygamists who killed or enslaved the local men and impregnated the women.” – from razib.

Male and female brains wired differently, scans reveal“Maps of neural circuitry show women’s brains are suited to social skills and memory, men’s perception and co-ordination…. Maps of neural circuitry showed that on average women’s brains were highly connected across the left and right hemispheres, in contrast to men’s brains, where the connections were typically stronger between the front and back regions.” – see also Sex differences in the structural connectome of the human brain. – and see also Stop the Presses! from malcolm pollack. (^_^)

Promiscuity Is Pragmatic“Why women and other female primates seek out multiple partners…. [T]here are two environmental contexts where women commonly choose multiple partners. The first is where women have more material support from their kin or economic independence from men more generally. This may explain why multiple mating is most common among small-scale matrilocal societies (in which women remain in their home village after marriage), such as the partible paternity societies of South America or the Mosuo of China. It may also explain why female infidelity has increased in Western societies as women have gained greater political and economic independence…. The second environmental context Scelza identified is where the sex ratio is female-biased (indicating a scarcity of men) or there is a high level of male unemployment (indicating a scarcity of men who can provide support).” – one for the gameboyz. (~_^)

The Associations Among Dark Personalities and Sexual Tactics Across Different Scenarios – h/t neuroskeptic!

Sharing is Caring? – from the awesome epigone.

Height prediction from common DNA variants – from steve hsu.

Parental olfactory experience influences behavior and neural structure in subsequent generations – epigenetic effects passed on between generations? there are those who are skeptical. (^_^) – see also Phobias may be memories passed down in genes from ancestors.

PISA, piece by piece – from steve sailer. see also steve’s Graph of 2012 PISA scores for 65 countries/economies.

Our IQs Are Climbing, But We’re Not Getting Smarter – re. woodley and armstrong paper.

Academic experts criticise Boris Johnson IQ claims“Dr James Thompson, senior lecturer in psychology at University College London, said Boris had been ‘inelegant’ in his choice of words. Thompson, co-author of Cognitive Capitalism, said: ‘What Boris Johnson has done is inelegantly describe things which in fact do seem to be true: intelligence, however you assess it, is predictive. It’s predicative of income, life span and of occupational status. People are different and have different futures and intelligence seems to be an important part of that.’ He said studies showed there seemed to be a correlation between ‘being bright in youth and doing well in life later’. Asked if inequality was inevitable, he said: ‘In one way that is true. There’s two things, one is that some people are brighter than others and can do more complicated work and that more complicated work is generally more valued.’ However, he added that how much people should be paid was a decision for society. Professor Richard Lynn, co-author of IQ and the Wealth of Nations, said that the association between IQ and income was ‘only modest’. ‘That is because some high IQ people go into jobs that don’t have particularly high earnings like university professors, schoolteachers or social workers. Some professions attract very high IQ people but they don’t have very high earnings,’ he said. ‘You could say that the IQ is only one determinant of high earnings, the others are ambition and motivation and the third one is luck.'” – h/t holtz!

The 7 tribes of intellect – from dr. james thompson.

Morality and the State“In general, ‘virtuous’ states – those free of corruption, that do not cheat or steal from their citizens, and that are effective in enforcing laws that are perceived as just – are more effective at promoting the common weal than their opposites. Heraclitus’ dictum that ‘character is destiny’ likely applies to states as well as individuals. I personally think that states are far more likely to be ‘virtuous’ in that sense if their powers are carefully circumscribed and limited.”

Could absence of a father permanently rewire the brain? – from mr. mangan, esq.

Investigation reveals black market in China for research paper authoring“The journal Science has uncovered, via investigation, a thriving black market in science paper authoring—people are paying to have their names added to papers that have been written to describe research efforts…. All in all, the investigative team contacted 27 agencies involved in helping researchers get their work published—only five of them refused an offer to pay for adding a name to a research paper.”

Researchers find first evidence of primates regularly sleeping in caves – ring-tailed lemurs!

Ancestral Journeys – greg cochran reviews a book! – just like he threatened promised!

Why biology belongs in the study of politics – h/t avi tuschman!

Does Nyborg’s study make sense?“One other thing bothers me. So please let me say it. Why must the Danes prove that they deserve to keep their country to themselves? Isn’t that a basic right? They have only one land to call home…unlike the many ‘refugees’ who regularly visit their own homelands. Once the Danes lose majority status in their country, they’ll be like the Copts of Egypt and other minorities in this world. They’ll have to live by their wits, trying to balance off one potential enemy against another.” – hear, hear! – from peter frost.

Migration Hurts the Homeland“The migration that research shows is unambiguously beneficial is the kind in which young people travel to democracies like America for higher education and then go home. Not only do these young people bring back valuable skills directly learned in the classroom; they bring back political and social attitudes that they have assimilated from their classmates. Their skills raise the productivity of the unskilled majority, and their attitudes accelerate democratization…. Many on the left, for their part, don’t like to recognize that we’re taking away fairy godmothers. They prefer to believe that they’re helping poor people flee difficult situations at home. But we might be feeding a vicious circle, in which home gets worse precisely because the fairy godmothers leave. Humanitarians become caught up trying to help individuals, and therefore miss the larger implications: There are poor people, and there are poor societies. An open door for the talented would help Facebook’s bottom line, but not the bottom billion. – h/t michael story!

A very mild form of Sapir-Whorf – from elijah.

Are Alzheimer’s and diabetes the same disease?

Are You A Workaholic? Blame Your Parents“A new study from the University of Michigan finds that how we feel about work depends on how our parents feel about work.” – especially your father, apparently. hmmmm.

Unearthed Peruvian tomb confirms that women ruled over brutal ancient culture“Archaeologists digging in an ancient Peruvian tomb have unearthed a skeleton, confirming that a mysterious people known as the Moche were ruled by a succession of queens that presided over a brutal and ritualistic society.” – h/t heartiste!

Did ancient Polynesians visit California? Maybe so.“Scholars revive idea using linguistic ties, Indian headdress” – h/t charles mann!

Why did Vinland fail? – h/t jayman!

10,000-year-old settlement unearthed in SW Ireland

bonus: Fruit flies with better sex lives live longer“Male fruit flies that perceived sexual pheromones of their female counterparts – without the opportunity to mate – experienced rapid decreases in fat stores, resistance to starvation and more stress. The sexually frustrated flies lived shorter lives.” – bzz. =(

bonus bonus: The Boomer Bust“Here we are in the baby boom cosmos. What have we wrought?” – by p.j. o’rourke – h/t charles murray!

bonus bonus bonus: The Year of the Hoax – from chuck @gucci little piggy.

bonus bonus bonus bonus: good news from australia! – Abbott’s Govt to dump laws on hate speech.

bonus bonus bonus bonus bonus: Doris Lessing’s Impatience With Political Correctness“‘Political correctness’ had become, Lessing said, ‘a kind of mildew blighting the whole world,’ particularly academic and intellectual circles — a ‘self-perpetuating machine for dulling thought.'”

bonus bonus bonus bonus bonus bonus: Moon gardens: NASA to sow 1st seeds of future habitat

bonus bonus bonus bonus bonus bonus bonus: Mafia ‘fed rival to pigs while he was still alive’ – how could i not link to this??

bonus bonus bonus bonus bonus bonus bonus bonus: Giant prehistoric toilet unearthed – poo!

(note: comments do not require an email. you are not a human!)

linkfest – 11/19/13

Lyme bacteria show that evolvability is evolvable“Natural selection favours those with a greater capacity to generate genetic variation.”

50,000 generations of bacteria prove that evolution never stops“[C]omputer models have shown that animals can still experience significant evolutionary changes over time, even in the absence of selectional pressures. Traits like evolvability, or evolutionary potential. Indeed, the Lenski study shows that the same holds true when working with organisms in evolutionary ‘real time.’ The researchers, who performed a comparative analyses of the bacteria after every 500 generations, showed that E. coli will continue to evolve towards increasing replicative efficiency.” – h/t peter turchin! – see also Krazy Kats from greg cochran.

Mystery humans spiced up ancients’ rampant sex lives“Genome analysis suggests interbreeding between modern humans, Neanderthals, Denisovans and a mysterious archaic population.” – see also: Mystery human species emerges from Denisovan genome.

Out of Africa revisited (entrevista a Chris Stringer)“To what extent do these differences in evolutionary paths, if any, affect the human biodiversity we see today? That is still unclear, but will become clearer in the next few weeks with the publication of new data….”

Neanderthal virus DNA spotted hiding in modern humans“The DNA of ancient viruses first spotted in the Neanderthal genome have now been identified in modern humans…. [The researchers] examined the genomes of 67 people with cancer, and found they each contained seven of the sequences supposedly unique to the ancient humans.”

How Our Minds Went Viral“Based on this research, the scientists propose a scenario. Our ancestors millions of years ago were infected with a virus. Eventually it became lodged in our genome. At some point, a mutation moved the virus enhancer next to the PRODH gene. Further mutations allowed it to helped boost the gene’s activity in certain areas of the brain, such as the hippocampus…. Perhaps our minds are partly the way they are today thanks to an infection our ancestors got a few millions of years ago.” – h/t john durant!

Reconstructing the Population Genetic History of the Caribbean“‘We find evidence of two pulses of African migration. The first pulse—which today is reflected by shorter, older ancestry tracts—consists of a genetic component more similar to coastal West African regions involved in early stages of the trans-Atlantic slave trade. The second pulse—reflected by longer, younger tracts—is more similar to present-day West-Central African populations, supporting historical records of later transatlantic deportation. Surprisingly, we also identify a Latino-specific European component that has significantly diverged from its parental Iberian source populations, presumably as a result of small European founder population size. We demonstrate that the ancestral components in admixed genomes can be traced back to distinct sub-continental source populations with far greater resolution than previously thought, even when limited pre-Columbian Caribbean haplotypes have survived.'” – @dienekes’.

Correlations in the population structure of music, genes and language“‘[T]he first quantitative evidence that music and genes may have coevolved by demonstrating significant correlations between traditional group-level folk songs and mitochondrial DNA variation among nine indigenous populations of Taiwan.” – @dienekes’.

Wolves turned into dogs by European hunter-gatherers – h/t hbd bibliography!

The Paradox of Diverse Communities“Their simulations of more than 20 million virtual ‘neighborhoods’ demonstrate a troubling paradox: that community and diversity may be fundamentally incompatible goals…. After 20 million-plus simulations, the authors found that the same basic answer kept coming back: The more diverse or integrated a neighborhood is, the less socially cohesive it becomes, while the more homogenous or segregated it is, the more socially cohesive…. [T]he models demonstrated that it was impossible to simultaneously foster diversity and cohesion ‘in all reasonably likely worlds.’ In fact, the trends are so strong that no effective social policy could combat them, according to Neal. As he put it in a statement, ‘In essence, when it comes to neighborhood desegregation and social cohesion, you can’t have your cake and eat it too.'” – see also original research article: The (In)compatibility of Diversity and Sense of Community [pdf]. – h/t nearly everybody on twitter!

A Review of ‘The Diversity Illusion’ by Ed West – from peter hitchens. – The Diversity Illusion.

War’s Enduring Effects on the Development of Egalitarian Motivations and In-Group Biases“[G]reater exposure to war created a lasting increase in people’s egalitarian motivations toward their in-group, but not their out-groups, during a developmental window starting in middle childhood (around 7 years of age) and ending in early adulthood (around 20 years of age). Outside this window, war had no measurable impact on social motivations in young children and had only muted effects on the motivations of older adults.” – h/t t.greer!

It’s nothing to sniff at: Men have bigger noses because of more muscle“Men may have larger noses than women because they generally have more muscle, demanding larger noses to breathe in more oxygen….” – h/t mr. mangan, esq.!

Rural White Liberals – a Key to Understanding the Political Divide“there are likely several factors involved in shaping the modern American political landscape. Of which, the strongest may be ethnonational origin. This is buttressed by population density pressure, founder effects, internal self-sorting, and perhaps even recent evolution.” – from jayman.

John Horgan and the “Warfare is Innate” Red Herring“The Blank Slate may be dead, but its zombies still walk among us.” – (~_^) – from helian.

A Little Speculation About Disgust Sensitivity and Attitudes Towards Homosexuals and People of Other Races – ewwww! – from staffan

They aren’t meant to pee standing up – well, not without one of these, but frankly that’s gross. – the awesome epigone on how happy teh feminists are (not).

Open letter to Morten Kjeldgaard – (~_^) – from elijah. – see also Was the Scientific Dishonesty Minister trying to suppress population estimates? from dr. james thompson.

The White man has no friends“Over the past millennium, Western Europeans have created a social environment where the individual is largely free from collective ties of kinship and ethnicity. Because the State has imposed a monopoly on the use of violence, there is less need to rely on kinsmen to safeguard one’s life and property.” (and ’cause of The Outbreeding Project, too, imho. (^_^) ) – from peter frost.

Preclinical testing shows SUMO-1 gene therapy shrinks an enlarged heart, improves heart funcion, and blood flow, human trials to start – h/t mike anissimov!

Borjas, Grogger, and Hanson: Immigrant and Native Complementarity“George Borjas, Jeffrey Grogger, and Gordon Hanson have a new paper, and it’s not good news for the Ottaviano and Peri result that immigration can cause native wages to increase due to strong complementarities between native and immigrant labor.” – h/t heartiste!

Is Jared Diamond racist? – oh, noes! not a waaaaycist! (hmmmm. maybe he is….) – h/t peter turchin!

Stunning Portraits Of The World’s Remotest Tribes Before They Pass Away – h/t heartiste!

bonus: William Pollack Dies at 87; His Vaccine Saved Infants“William Pollack, a medical researcher who helped develop a vaccine that virtually eradicated a disease [Rh disease] once responsible for 10,000 infant deaths a year in the United States, died on Nov. 3 in Yorba Linda, Calif. He was 87.”malcom pollack‘s dad. =( see also: William Pollack, R.I.P. from mr. mangan, esq.

bonus bonus: working first chapter of A Part-time Job in the Country by luke lea! send comments to luke.

bonus bonus bonus: I’ve realised why I like the Dutch so much: they invented capitalism – from dan hannan. (just missing the biology! (~_^) ) – see also: The World of English Freedoms“It’s no accident that the English-speaking nations are the ones most devoted to law and individual rights, writes Daniel Hannan.”

bonus bonus bonus bonus: It’s time to confront this taboo: First cousin marriages in Muslim communities [in the u.k.] are putting hundreds of children at risk“Many NHS doctors, while admitting privately there is a crisis, refuse to speak out for fear of being branded ‘racist’.”

bonus bonus bonus bonus bonus: Thus Spake Obama“The incompetence of our neo-monarchy.” – from mark steyn. – h/t charles murray!

bonus bonus bonus bonus bonus bonus: Wine: Drinking in the Mother Vine“[R]eportedly the oldest cultivated grapevine in North America.”

bonus bonus bonus bonus bonus bonus bonus: Scientists date world’s oldest animal at 507 years old — after they accidentally kill it – *facepalm* – h/t nelson!

(note: comments do not require an email. ming – the ex-world’s oldest animal.)

linkfest – 06/10/13

The breeder’s equation – R = h2S – from greg cochran.

Making Europeans kinder, gentler – from peter frost.

Napoleon Chagnon: Blood is their Argument“‘It’s almost always for revenge. Blood is their argument. The Yanomamö will always attempt to avenge the death of a kinsman. It may take them a long time, and when the tables are turned on the guys that did it, like they get too small as a group, then it may appear to be a preemptive strike, but it has some historical roots. It’s almost never a case where they attack another Yanomamö village preemptively for no reason at all. It’s usually a consequence of some previous argument.'” – via habitable worlds: Darwin’s Dangerous Clan. see also Historical Reality: Infanticide vs Abortion @occam’s razor.

Zazes, Flurps and the Moral World of Kids – four-year-olds “assume that everybody else will be biased against other groups. And this extends beyond race, gender and religion to the arbitrary realm of Zazes and Flurps.” – h/t charles!

Manly Sweat Makes Other Men More Cooperative“A chemical component of other guys’ sweat makes men more cooperative and generous, new research says. The study is the first to show that this pheromone, called androstadienone, influences other men’s behavior and reinforces the developing finding that humans are susceptible and responsive to these chemical signals.”

120,000 Years of Cancer“A Neanderthal who lived more than 120,000 years ago had cancer of the bones, in the earliest known incidence of the disease found in the human fossil record, a new study reports.”

How does inbreeding avoidance evolve in plants?“Case study of Leavenworthia suggests that loss of complex traits may be reversed.”

A Requiem for Science – from john derbyshire.

The Gentleman Naturalist“[Darwin and Wallace’s] papers were presented to the Linnean Society in July 1858, and met with silence: as Desmond and Moore say, ‘no fireworks exploded, only a damp squib’.”

ORIGINAL PAPER: How clever were the Victorians? A comment on Woodley et al. (2013) – from elijah armstrong!

The Onset and Development of B-W Ability Differences: Early Infancy to Age 3 (Part 1) – from jason malloy. see also dr. thompson: By the age of three, a clear gap in ability.

Slowing immigrant assimiliation“George Borjas’s latest paper released at NBER shows that newer waves of immigrants are less able to assimilate than previous immigrants waves.” – @gucci little piggy. see also: Two books, one conclusion. Immigration has been and is too high. @conservative home (u.k.).

The Real Threat to British Elites“Why British elites covered up the Pakistani pimps’ child gangrape horror.” – from steve sailer.

Population history of the Caribbean (Moreno-Estrada et al. 2013) and IBD sharing between Iberians and North Africans (Botigué et al. 2013) – @dienekes.

How Game Might Have Benefited Jason Richwine – ask and ye shall receive! [no double entendre intended. you guys have been reading too much roissy! (~_^) ] – good stuff from heartiste! (thanks, h!)

Geography, race, religion, and class“[W]ealthy suburban and rural blacks go to church more than poor inner-city blacks do, and wealthy suburban and rural whites attend more than poor inner-city whites do.” – from the awesome epigone.

People Are Overly Confident in Their Own Knowledge, Despite Errors

Ethnic policy in ancient Japan – from spandrell!

“‘[F]ertility may be a strategic choice for ethnic groups engaged in redistributive conflict'” [pdf] – via race/history/evolution notes.

Atheists turn to science during times of stress

Genetics and the increase in obesity – from jason collins. see also mr. mangan, esq.: The Rise of Mental Illness and Obesity.

100 Blog Posts – A Reflection on HBD Blogging And What Lies Ahead – from jayman. and jayman jr.!! (^_^)

Back in the saddle – m.g. @thosewhocansee is back (or will be back shortly)! yaaaaayyyyyy!!!! h/t nelson!

Human Biodiversity – Things You Are Not Supposed to Know About – from staffan!

bonus: Review of “Blood Meridian” by Cormac McCarthy – from foseti. see also this great set of “randoms” from mr. f. you should click through to every last one of them (if you haven’t already)!

bonus bonus: How the chicken lost its penis – a lesson for all!

bonus bonus bonus: Leviathan Unbound – from malcolm pollack.

bonus bonus bonus bonus: light entertainment – @PRISM_NSA on twitter and Obama Is Checking Your Email on tumblr. (~_^)

bonus bonus bonus bonus bonus: Life wasn’t all trouble at mill“[T]he Industrial Revolution came as a tremendous boom to a lot of working people: they earned far more than they had done before, escaped lives of crushing poverty and for the first time began to exert some measure of control over their lives.”

bonus bonus bonus bonus bonus bonus: Is Humbert Humbert Jewish?

bonus bonus bonus bonus bonus bonus bonus: The Fight to Save Ping Pong – excellent!

(note: comments do not require an email. dirty jobs – sexing baby chickens!)