Archives for posts with tag: evolution

we know that human biodiversity (hbd) is true because, for one thing, we have many, many examples of it (see here)!

additionally, both the workings of the natural world and specifically the theory of evolution predict that hbd must be the case.

nature likes to throw up variety (see here for example) — the variation between individual organisms is, after all, what natural selection acts upon — and there’s no reason for humans to be any exception. add to that the fact that humans reproduce sexually — with all the genetic shuffling and remixing that happens there — and it’s inevitable that individual humans will be biologically diverse.

various groups or populations of humans — ranging from small-sized families to races and even beyond (for example, think: east asians+native americans together compared to caucasians or subsaharan africans) — will also inevitably be biologically diverse from one another, to greater or lesser degrees, due to forces of evolution such as natural selection, gene flow, and/or genetic drift.

keep in mind that humans — including various discrete-ish human populations (biological borders are fuzzy, naturally) — have experienced recent evolution (i.e. within the last 40,000 years or so), that human evolution has probably sped up since the advent of agriculture, and that we are undoubtedly still evolving today.

ignoring or denying the existence of human biodiversity won’t make it go away. hbd — and its implications — will remain a reality in spite of all your hopes and dreams, however well-intentioned they may be.

this is one of a set of posts on What is Human Biodiversity? please, before you fire off a rant leave a comment here, check out the other posts, because your question or objection may have been dealt with in one of them. here they all are!:

what is human biodiversity (hbd)?
what human biodiversity (hbd) is not
examples of human biodiversity (hbd)
hbd and racism
hbd and politics

(note: comments do not require an email. another great moment in evolution.)

I can’t afford to think about that“[W]hy are balls of steel so rare in academia? Do they undergo a procedure?” – from greg cochran.

Species Do Not Exist“[T]he Endangered Species Act has shaky conceptual foundations…. And yet we somehow deal with the fact that the universe is complex when it comes to species, although not with races.” – from steve sailer. see also Should You Fear the Pizzly Bear? h/t werner jensen!

Catastrophes in evolution: Is Cuvier’s world extinct or extant?

Million year hominid dispersal event in Iberia“Archaeological remains dating to between 1 million to 780,000 years were also found on an excavation that has provided evidence of the first known human occupation in the Iberian Peninsula.” – h/t cultevobot!

Early Exit: When Did Modern Humans First Leave Africa?“[A] recent study in Proceedings of the National Academy of Sciences of the genes of indigenous people in southeast Asia has suggested a much earlier date for the first human explorers. Professor Katerina Harvati-Papatheodorou and lead author Hugo Reyes-Centeno of the University of Tubingen in Germany and their colleagues fed this genetic data into a computer model of migration and found that the best explanation was an African exodus around 130,000 years ago, more than twice as far back as most scientists think. They also suggested that this early wave took a different route, spreading along the south coasts of Arabia and Asia towards Australia.”

Early modern humans were ‘culturally diverse’ before they left Africa“Researchers have carried out the biggest ever comparative study of stone tools dating to between 130,000 and 75,000 years ago found in the region between sub-Saharan Africa and Eurasia. They have discovered there are marked differences in the way stone tools were made, reflecting a diversity of cultural traditions. The study has also identified at least four distinct populations, each relatively isolated from each other with their own different cultural characteristics.”

Indo-Europeans preceded Finno-Ugrians in Finland and Estonia“An archaic (Northwest-)Indo-European language and a subsequently extinct Paleo-European language were likely spoken in what is now called Finland and Estonia, when the linguistic ancestors of the Finns and the Sami arrived in the eastern and northern Baltic Sea region from the Volga-Kama region probably at the beginning of the Bronze Age.” – @dienekes’.

168 South Asian Genomes – @dienekes’.

Claim: Modern human teeth in southern China 70-125 ka BP – h/t razib!

The Most Violent Era In America Was Before Europeans Arrived“[A] new paper finds that the 20th century, with its hundreds of millions dead in wars and, in the case of Germany, China, Russia and other dictatorships, genocide, was not the most violent – on a per-capita basis that honor may belong to the central Mesa Verde of southwest Colorado and the Pueblo Indians. Writing in the journal American Antiquity, Washington State University archaeologist Tim Kohler and colleagues document how nearly 90 percent of human remains from that period had trauma from blows to either their heads or parts of their arms. ‘If we’re identifying that much trauma, many were dying a violent death,’ said Kohler. The study also offers new clues to the mysterious depopulation of the northern Southwest, from a population of about 40,000 people in the mid-1200s to 0 in 30 years.” – h/t hbd bibliography!

The ‘six universal’ facial expressions are not universal, cross-cultural study shows“It’s a con­cept that had become uni­ver­sally under­stood: humans expe­ri­ence six basic emotions — happiness, sad­ness, anger, fear, dis­gust, and surprise — and use the same set of facial move­ments to express them…. The only problem with this con­cept, according to North­eastern Uni­ver­sity Dis­tin­guished Pro­fessor of Psy­chology Lisa Feldman Bar­rett, is that it isn’t true at all…. [W]hat were assumed to be ‘psy­cho­log­ical uni­ver­sals’ may in fact be ‘Western’ — or per­haps even ‘American’ — cultural cat­e­gories.”

The intelligent pursuit of happiness“Intelligence is associated with health and longevity, and more intelligent children on average tend to live longer and healthier lives than less intelligent children, although it is not known why. Health is significantly associated with psychological well-being. So, it is possible that more intelligent individuals are more stable in their happiness over time because they are more likely to remain constantly healthy than less intelligent individuals.” – from dr. james thompson.

Clues emerge to genetic architecture of intelligence in children“‘When we computed the contribution of common variants to these cognitive abilities, we found that some of the contributions were substantial,’ said Hakonarson. For instance, common SNPs accounted for roughly 40 percent of the population differences in nonverbal reasoning, and 30 percent of the differences in language reasoning, with the balance of the differences attributable to rare variants and environmental factors. On the other hand, common gene variants together contributed to only 3 percent of the differences in spatial memory—the ability to navigate in a geographical location. There also were significant overlaps between trait domains. Reading ability, which was 43 percent attributable to common variants, was often inherited together with language reasoning abilities.” – h/t nolasco!

Lead released from African cookware contaminates food“Researchers tested 29 samples of aluminum cookware made in Cameroon and found almost all had considerable lead content. This cookware is common throughout Africa and Asia and is made from recycled scrap metal including auto and computer parts, cans, and other industrial debris. Lead exposure in children is linked to brain damage, mental retardation, lower educational performance, and a range of other health effects.” – h/t science enabled!

Facial fluctuating asymmetry is not associated with childhood ill-health in a large British cohort study – h/t jelte wicherts! who tweeted: “Contrary to several small N studies, large study finds no relationship between health measures & facial asymmetry.”

Structural Growth Trajectories and Rates of Change in the First 3 Months of Infant Brain Development – h/t simon baron-cohen! who tweeted: “Typical brain growth from birth to 3 months old: the brain grows 1% per day, and male brains grow faster.”

Workaholism: The addiction of this century“Workaholics scored higher on three personality traits: Agreeableness, Neuroticism, Intellect/Imagination.” – h/t claire lehmann!

Twins separated at birth reveal staggering influence of genetics“Segal, who wrote a book about the study called ‘Born Together Reared Apart: The Landmark Minnesota Twins Study’ (Harvard University Press, 2012), is now doing a prospective study of Chinese twins raised apart, often in different countries, by adoptive families.”

The association between grandparenthood and mortality – h/t neuroskeptic! who tweeted: “People who become grandparents at an early age tend to die sooner.” – because they have faster life histories?

Getting the babes but not the babies“Who’s making more babies? ‘Good boys’ or ‘bad boys’? Originally, the good boys were, thanks to parental monitoring of relations between single men and single women. The pendulum then swung toward the bad boys in the 1940s, only to swing back after the 1960s.” – from peter frost.

Population-level variability in the social climates of four chimpanzee societies – h/t erwin schmidt! who tweeted: “Some groups of chimpanzees are more egalitarian than others.”

Is empathy in humans and apes actually different? ‘Yawn contagion’ effect studied“Humans and bonobos are the only two species in which it has been demonstrated that yawn contagion follows an empathic trend, being more frequent between individuals who share a strong emotional bond, such as friends, kin, and mates…. Two features of yawn contagion were compared: how many times the individuals responded to others’ yawns and how quickly. Intriguingly, when the yawner and the responder were not friends or kin, bonobos responded to others’ yawns just as frequently and promptly as humans did. This means that the assumption that emotional contagion is more prominent in humans than in other species is not necessarily the case. However, humans did respond more frequently and more promptly than bonobos when friends and kin were involved, probably because strong relationships between humans are built upon complex and sophisticated emotional foundations linked to cognition, memory, and memories. In this case, the positive feedback linking emotional affinity and the mirroring process seems to spin faster in humans than in bonobos. In humans, such over-activation may explain the potentiated yawning response and also other kinds of unconscious mimicry response, such as happy, pained, or angry facial expressions.”

Self-regulatory failure and the perpetration of adolescent dating violence: Examining an alcohol use by gene explanation“[A]lcohol use was more strongly associated with dating violence among adolescents who had a high rather than a low multilocus genetic profile composed of five genetic markers that influence dopamine signaling. Alcohol use was more strongly related to dating violence among boys with long rather than short 5-HTTLPR alleles, the opposite of the prediction. MAOA-uVNTR did not interact with alcohol, but it had a main effect on dating violence by boys in later grades in the expected direction: boys with more low activity alleles perpetrated more dating violence. Exploratory analyses found variation in findings by race.” – h/t unsilenced science!

Take Two Sugar Pills and Call Me in the Morning“Over the past decade, a number of clinical studies have begun to show that people who improve on placebos are genetically different than those who don’t.” – h/t billare! see also here.

Designer babies: selection vs editing – @steve hsu’s.

Anxiety in invertebrates opens research avenues“[N]euronal mechanisms related to anxiety have been preserved throughout evolution. This analysis of ancestral behavior in a simple animal model opens up new avenues for studying the neuronal bases for this emotion.”

Our Microbiome May Be Looking Out for Itself – sneaky microbiome! h/t mr. robert ford!

New Study To Look At The Genetics Of Inflammatory Bowel Disease – from 23andMe.

Constitutional verbosity and social trust – h/t heartiste! who tweeted: “The more a nation’s people trust each other, the fewer words they need to codify that trust.”

War in the womb“A ferocious biological struggle between mother and baby belies any sentimental ideas we might have about pregnancy” -h/t charles!

Head Count – ‘Malthus,’ by Robert J. Mayhew

New Saudi ban on marriage to foreigners stirs controversy“[A] new law bans Saudi men from marrying women from Pakistan, Bangladesh, Chad and Burma.” (not a big surprise from the najdis.)

Avoid marrying kin, behave ‘softly on first night’“A notice from the Health Ministry [of turkey-h.chick] on ‘Consultancy before Marriage’ has highlighted that one out of every five marriages are among kin. The recently released document also includes sexual advice for couples, especially for the ‘first night.’ ‘Consanguineous marriage is mostly among first-degree relatives, increasing the number of rare genetic diseases,’ it said. ‘This matter is noteworthy. Those who are married to kin and those who carry genetic diseases should consult a health institution before gestation.'” – h/t anatoly karlin!

Avoiding Prince Joffrey: Primates have newly discovered ability that stops inbreeding“[N]ew research in macaques has revealed for the first time that primates are able to recognise their own relatives. The researchers opted for macaques rather than chimps for their study as the former lives in larger groups with more relatives; allowing them to pick distantly related monkeys who haven’t met, they could rule out ‘familiarity’ as a way for figuring out who is related…. The researchers had no clue as to how they were able to do this. Perhaps they did make a ‘template’ based on relatives they were familiar with, or maybe they had figured out what they looked like somehow, so could use that to figure out who were their relatives.”

Download Pew Datasets!

bonus: Researchers create 1,000-robot swarm – PANIC!!1! HEAD FOR THE HILLS!!

bonus bonus: The Domestic Cat Genome Has Been Fully Sequenced, and It’s Fascinating“Cats also have what biologists call “a highly conserved ancestral mammal genome organization,” which means that many stretches of their genome haven’t changed much over evolutionary time. Put simply, domestic cats haven’t changed much since they first evolved.”

bonus bonus bonus: Reconstructions show how some of the earliest animals lived — and died – rangeomorphs. h/t mike anissimov!

bonus bonus bonus bonus: Shortest-known abstract for a serious scientific paper (^_^)

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

Crickets in two places fall silent to survive“To hide themselves from deadly flies, crickets on two Hawaiian islands have evolved an inability to sing. Ten years ago, two years apart, males appeared on Kauai and Oahu with altered wings, which they would normally rub together to chirp and attract females. New findings published in the journal Current Biology show that the wing changes are physically different and arose from separate mutations. This makes the silent crickets a brand new example of ‘convergent evolution’.” – and some really rapid evolution!

Microbes May Drive Evolution of New Animal Species“[S]ymbiosis — a long-term, stable and often beneficial interaction between organisms — could drive two populations apart, the first step in the development of new species. Although the idea has been floating around for nearly a century, it has only recently begun to gain traction in biology. This idea contrasts sharply with the traditional picture of evolution, in which new species emerge either from geological isolation or from a relentless struggle for food and mates. According to this new hypothesis, a host organism’s microbes might trigger changes in mating and reproduction that begin to define two different populations.” – h/t charles!

you gotta read this!: Coincidental Killers“We assume that microbes evolved to attack humans when actually we are just civilian casualties in a much older war…. Many of the pathogens we fear most are mere tourists on the human body. Their real homes are oceans, caves, or soils. To understand them, we need to understand them within their natural ecology. Soil, for example, is an extreme habitat for a microbe: harsh and constantly changing. It can quickly oscillate from flood to drought, from scalding heat to freezing cold, and total darkness to intense solar radiation. It’s rife with other competing microbes, and crawling with hungry predators. We fear lions and tigers and bears; bacteria have to contend with phage viruses, nematode worms, and predatory amoebas. All of these conditions can lead to adaptations that make microbes accidentally suited for life in a human host. We are, after all, just another environment. A thick capsule that shields a microbe from dehydration could also shield it from our immune system. A spore that is adapted for travelling through the air can be easily inhaled into a respiratory tract.”

Genetically identical ants help unlock the secrets of larval fate“A young animal’s genes are not the only genes that determine its fate. The genetic identity of its caretakers matters too…. [A] team led by Serafino Teseo of the University of Paris 13 used the unique aspects of the [clonal] ants’ biology to test the indirect role genes play in shaping the future identity of larvae and whole colonies by looking at the interaction between larvae and adults. They did so by observing the success of two ant clones, A and B, in pure colonies or mixed together into chimeric colonies. They also swapped broods, so A adults raised B larvae and vice versa. It turned out that A and B larvae developed differently depending on whether A or B nurses raised them. Left alone, pure A colonies produced the most young after six generations, making them more successful than B. However, in mixed colonies, B did better because its larvae more frequently turned into large adults that specialize in egg-laying rather than smaller, foraging-focused individuals….” – h/t rolf muertter!

Mitochondrial DNA of first Near Eastern farmers is sequenced for the first time“According to conclusions, genetic affinities have been observed between the mitochondrial DNA of first Neolithic populations and the DNA of first Catalan and German farmers. This suggests that probably Neolithic expansion took place through pioneer migrations of small groups of population. Moreover, the two main migration routes — Mediterranean and European — might have been genetically linked. ‘The most significant conclusion — highlights Eva Fernández — is that the degree of genetic similarity between the populations of the Fertile Crescent and the ones of Cyprus an Crete supports the hypothesis that Neolithic spread in Europe took place through pioneer seafaring colonization, not through a land-mediated expansion through Anatolia, as it was thought until now….’ Other scientific studies had already provided signs of an alternative scenario of Neolithic spread in Europe different from the one through Anatolia. According to Turbón, ‘recent archaeological finds have proved that the Neolithic arrived to Cyprus around 10,600 years ago, some years after the first documentation of agricultural practices in the Near East.’ Architecture and burial models found in Cyprus’ sites are similar to the ones found in the Middle Euphrates basin, ‘that indicates a direct colonisation of these territories,’ highlights the author. ‘Besides, spatial interpolation of radiocarbon dates from different Neolithic sites in the Near East and Europe also suggests a first seafaring expansion through Cyprus,’ he concludes.” – orginal research article.

The Giant Rat of Sumatra and Sardinia and No True Sardinian – from greg cochran.

A twist in Austronesian origins“The Taiwanese origin of Austronesians is widely accepted. A new preprint confirms this theory, but adds a new twist to the story of Austronesian dispersals, as it seems that in their western expansion, Austronesians picked up some Austroasiatic ancestry. This means either that Austroasiatic speakers preceded them in islands where Austronesian languages are now spoken, or that the Austronesians picked up this kind of ancestry in the mainland before settling in the islands.” – from dienekes.

A new allele for blond hair“There is a widespread belief that whatever made Europeans fair-skinned also gave them their unique palette of hair and eye colors. In reality, fair skin has only a weak genetic linkage with either non-black hair or non-brown eyes.” – from peter frost. see also: A molecular basis for classic blond hair color in Europeans.

A Genetic Map of Fireworks in Time“French Canadians and Slavs are both cases of populations which were once relatively modest and began in a narrow delimited region, but now are quite expansive and numerous. In the case of the East Slavs the demographic expansion also entailed the absorption of numerous Uralic tribes, as well as later Turks. And this illustrates one of the major details which I think has characterized the genetic turnover of human populations: phase shifts from a relatively static one defined by isolation by distance gene flow across clinal gradiants, to a rapid expansion of a small subset, and the overlay of this component as a palimpsest over the underlying variation. In some cases the replacement is nearly total, as in the modern United States. In other cases, as among Great Russians, the Slavic affinities of this population, and its association with Poles and other groups are clear, but there was a non-trivial uptake of exogenous segments which might allow for a reconstruction of the prior genetic landscape. These changes occur over short periods, and are bright fireworks against the comparatively static firmament.” – from razib.

Male faces ‘buttressed against punches’ by evolution“A new theory suggests that our male ancestors evolved beefy facial features as a defence against fist fights. The bones most commonly broken in human punch-ups also gained the most strength in early “hominin” evolution. They are also the bones that show most divergence between males and females.” – h/t darwin evolution! – original research article.

Faster eye responses in Chinese people not down to culture“New research from University of Liverpool scientists has cast doubt on the theory that neurological behaviour is a product of culture in people of Chinese origin. Scientists tested three groups – students from mainland China, British people with Chinese parents and white British people – to see how quickly their eyes reacted to dots appearing in the periphery of their vision…. The findings, published in the journal PLoS One, revealed that similar numbers of the British Chinese and mainland Chinese participants made high numbers express saccades, with the white British participants made far fewer. Culturally the British Chinese participants were similar to their white British counterparts and different to the mainland Chinese students.”

Cultural differences in human brain activity: A quantitative meta-analysis“East Asians show enhanced activity underlying mentalizing and emotion regulation. Westerners show enhanced activity underlying self-reflection and emotional responses.”

Race could be a factor in head, neck cancer survival rates“The national survival rates for African-Americans diagnosed with head and neck cancer have not improved in the last 40 years despite advances in the treatment and management of the disease, researchers have found. The researchers suggest that inherent genetic factors in African-Americans may make some tumors resistant to treatments.”

Severe intellectual disability diagnosed by analysis of entire genome“[A]lmost all mental impairments are caused by new mutations that have not yet occurred in father or mother.” – h/t mr. robert ford!

New genes involved in food preferences will revolutionize diets and improve health“The researchers undertook genome wide association studies (GWAS) to try to unravel the genetic basis for certain food preferences. 2311 Italian subjects participated in the discovery step, while 1755 from other European countries and from Central Asia were used in order to further verify the findings. They uncovered 17 independent genes related to liking for certain foods, including artichokes, bacon, coffee, chicory, dark chocolate, blue cheese, ice cream, liver, oil or butter on bread, orange juice, plain yoghurt, white wine and mushrooms. Surprisingly, none of the genes thus identified belonged to the category of taste or smell receptors…. In a second study, the researchers amassed the response of around 900 healthy adults from North Eastern Italy to salt, and related this to a DNA sequence variation found on the KCNA5 gene, known to be related to taste pathways in mammals.”

First direct evidence for human sex pheromones“‘By using dynamic point-light displays that portray the gaits of walkers whose gender is digitally morphed from male to female, we show that smelling androstadienone systematically biases heterosexual females, but not males, toward perceiving the walkers as more masculine. By contrast, smelling estratetraenol systematically biases heterosexual males, but not females, toward perceiving the walkers as more feminine. Homosexual males exhibit a response pattern akin to that of heterosexual females, whereas bisexual or homosexual females fall in between heterosexual males and females. These effects are obtained despite that the olfactory stimuli are not explicitly discriminable. The results provide the first direct evidence that the two human steroids communicate opposite gender information that is differentially effective to the two sex groups based on their sexual orientation.'” – @deric bownds’ mindblog.

Genetic relatedness predicts contact frequencies with siblings, nieces and nephews: Results from the Generational Transmissions in Finland surveys“Individuals have more contacts with full than with half siblings. Individuals have more contacts with nieces/nephews via full than via half siblings. Individuals have more contacts with nieces/nephews via sisters than via brothers.” – h/t jayman!

Beware Armchair Psychoanalysis“‘Behavioral genetic studies have proved beyond a shadow of a doubt that heredity is responsible for a sizable portion of the variations in people’s personalities. Some people are more hot-tempered or outgoing or meticulous than others, and these variations are a function of the genes they were born with as well as the experiences they had after they were born. The exact proportion— how much is due to the genes, how much to the experiences—is not important; the point is that heredity cannot be ignored.'” – from jayman (quoting judith rich harris there).

SD-IE and other differentiation effects in Italy and Spain [pdf] – “SD–IE [strategic differentiation–integration effort] is a strategic differentiation effect present amongst indices of life history (LH), such that persons and populations of slow LH are more differentiated compared to those of fast LH. We found that this phenomenon is present amongst provinces in Italy and Spain, similarly to demonstrations among US states and Japanese prefectures. The average effect size of SD–IE was found to be bigger in Spain and Italy….. In the present study, we test SD–IE using regional-level data for counties in Spain and Italy.”

Is the smart fraction as valuable as previously thought?“‘Consistent with the intellectual class theory advocated by Rindermann and Thompson (2011) and Rindermann et al. (2009), our research findings showed strong evidence that those people that have high IQ are the most relevant influence on economic development. Although our results suggested that all three examined IQ categories promote higher economic growth, the intellectual class has the highest impact followed by the mean ability and non-intellectual classifications. Similarly, the intellectual class also has a highly significant effect on generating technological progress, whereas the influence of the other two groups is immaterial.'” – @dr. james thompson’s blog.

HVGIQ: Burma and HVGIQ: U.S. Virgin Islands – from jason malloy.

Life unworthy of life – post about, as jayman put it, who supports eugenics. – from the awesome epigone.

The Biology of Risk“The state of your body predicts your appetite for financial risk just as it predicts an athlete’s performance. If we understand how a person’s body influences risk taking, we can learn how to better manage risk takers. We can also recognize that mistakes governments have made have contributed to excessive risk taking.”

We can’t ignore the evidence: genes affect social mobility“Why do so many people fail to accept the overwhelming evidence that genes contribute to academic achievement and thereby social status?” – h/t hbd bibliography!

India’s Feudal Rapists

Old chaps? 3,300-year-old trousers found in China may be world’s oldest“Animal-fur menswear found on the bodies of two mummies in Xinjiang province ‘almost the same shape as today’s trousers'”

Grave find may be Western Europe’s earliest false tooth“Archaeologists have identified what could be remains of the earliest false tooth found in Western Europe. The dental implant comes from the richly-furnished timber burial chamber of an Iron Age woman that was excavated in Le Chene, northern France.”

Cat People Are Smarter Than Dog People, New Study Shows – (~_^) – ftr, i like both. i’m not a speciesist!

bonus: Blind cavefish are able to ‘count’“Blind cave-dwelling fish are able to discriminate between different quantities, scientists say…. Researchers say it is the first time non-visual numerical abilities have been shown in fish.” – h/t mo costandi!

bonus bonus: Bees build mental maps to get home“Study suggests the insects do not rely solely on the Sun as a compass…. ‘The surprise comes for many people that such a tiny little brain is able to form such a rich memory described as a cognitive map,’ says co-author Randolf Menzel, a neurobiologist at the Free University of Berlin.”

bonus bonus bonus: Nemo’s Dad Should Have Become His Mom, And Other Lies Children’s Movies Told You – h/t steve stewart williams!

(note: comments do not require an email. “i wandered lonely as a cloud….”)

Quick Questions for Peter and Rosemary Grant“There is widespread misunderstanding about evolution; that it occurs extremely slowly and therefore cannot be studied in a person’s lifetime. This was the view of Charles Darwin. Many biologists and others now know that this is not correct…. The idea that animals as large as birds might evolve before our eyes is not so well known, yet our study in the entirely natural world of Daphne Major island has revealed this does in fact happen when there is a change in the environment, and it takes place over a period as short as a year, and repeatedly.” – h/t billare!

Is DNA Multilingual?“The genetic code has traditionally been viewed as a universal set of instructions, exquisitely tuned to maintain robust stability and allow evolution-sustaining mutations. But the pervasive occurrence of recoded stop codons, and the backchannel crosstalk between microbes and viruses, paints a more intricate picture of multilingual genetic instructions.”

Jelly genome mystery“The uniqueness of this ctenophore’s nervous system leads Moroz and his team to argue that it must have evolved independently, after the ctenophore lineage branched off from other animals some 500 million years ago.”

Genomic divergence in a ring species complex“Ring species provide particularly clear demonstrations of how one species can gradually evolve into two, but are rare in nature…. Here we use genome-wide analyses to show that, although spatial patterns of genetic variation are currently mostly as expected of a ring species, historical breaks in gene flow have existed at more than one location around the ring, and the two Siberian forms have occasionally interbred.” – h/t razib!

Natural selection and infectious disease in human populations“The ancient biological ‘arms race’ between microbial pathogens and humans has shaped genetic variation in modern populations, and this has important implications for the growing field of medical genomics. As humans migrated throughout the world, populations encountered distinct pathogens, and natural selection increased the prevalence of alleles that are advantageous in the new ecosystems in both host and pathogens. This ancient history now influences human infectious disease susceptibility and microbiome homeostasis, and contributes to common diseases that show geographical disparities, such as autoimmune and metabolic disorders.”

High genetic differentiation between populations often driven by classic selective sweeps“‘We demonstrate that while sites of low differentiation represent sampling effects rather than balancing selection, sites showing extremely high population differentiation are enriched for positive selection events and that one half may be the result of classic selective sweeps. Among these, we rediscover known examples, where we actually identify the established functional SNP, and discover novel examples including the genes ABCA12, CALD1 and ZNF804, which we speculate may be linked to adaptations in skin, calcium metabolism and defense, respectively. Conclusions: We have identified known and many novel candidate regions for geographically restricted positive selection, and suggest several directions for further research.'” – @dienekes’.

Mendelian-Mutationism: The Forgotten Evolutionary Synthesis – h/t neuroskeptic! who tweeted: “Did geneticists ‘crack’ the secret of evolution much earlier than believed?”

this one’s for linton!: Why Marrying Your Cousin May Pay Off“In line with previous findings, the researchers found that among non-foraging societies, a couple’s relatedness was linked with having more surviving children. But among foraging societies, the opposite was true: More-closely related spouses had fewer surviving children. Furthermore, the more family intermarriage in a society, the greater the benefit of intermarrying on the number of children couples had. In other words, in societies in which people frequently married their relatives, intermarrying showed a stronger link to having more children.”

The Closest of Strangers“[I]dentical twins who are aunts and uncles invest more in caring for the children of their twins (their ‘genetic’ sons and daughters) than do fraternal twins.”

Why Do Honor Killings Defy the First Law of Homicide? And Will Smaller Families Lead to Fewer Of Them? – h/t tom farsides! – previously: inclusive inclusive fitness.

Genetic and educational assortative mating among US adults“We find that spouses are more genetically similar than two individuals chosen at random but this similarity is at most one-third the magnitude of educational similarity.”

Irish fair skin can be traced to India and the Middle East“A major new US study at Penn State University has found that Europeans’ light skin stems from a gene mutation from a single person who lived 10,000 years ago…. Keith Cheng from Penn State College of Medicine reported that one amino acid difference in the gene SLC24A5 is a key contributor to the skin color difference between Europeans and West Africans…. ‘The mutation in SLC24A5 changes just one building block in the protein, and contributes about a third of the visually striking differences in skin tone between peoples of African and European ancestry, he said…. The mutation, called A111T, is found in virtually everyone of European ancestry. A111T is also found in populations in the Middle East and Indian subcontinent, but not in high numbers in Africans. All individuals from the Middle East, North Africa, East Africa and South India who carry the A111T mutation share traces of the ancestral genetic code. According to the researchers, this indicates that all existing instances of this mutation originate from the same person.” – h/t 23andMe!

The puzzle of European hair, eye, and skin color“The physical appearance of Europeans seems to result from a selection pressure that acted primarily on women and only secondarily on men. This is especially true for highly visible traits on or near the face—the focus of visual attention.” – from peter frost.

The Dark Triad of Personality – special issue of Personality and Individual Differences. – h/t claire lehmann!

Heritability of brain volume change and its relation to intelligence“Human brain volumes change throughout life, are highly heritable, and have been associated with general cognitive functioning…. Results show that changes in volumes of total brain (mean=-6.4ml; -0.5% loss), cerebellum (1.4ml, 1.0% increase), cerebral white matter (4.4ml, 0.9% increase), lateral ventricles (0.6ml; 4.8% increase) and in surface area (-19.7cm2, -1.1% contraction) are heritable (h2=43%; 52%; 29%; 31%; and 33%, respectively). An association between IQ (available for 91 participants) and brain volume change was observed, which was attributed to genes involved in both the variation in change in brain volume and in intelligence. Thus, dynamic changes in brain structure are heritable and may have cognitive significance in adulthood.”

Cognitive abilities amongst the Sámi population“Lapps have an IQ around 100.8 are tilted towards visuospatial ability and away from verbal ability.” – from elijah armstrong, michael woodley the younger, and richard lynn. edit: original paper here on elijah’s blog! (^_^)

The Flynn Effect in a Nutshell – from elijah.

Does brain structure determine your political views?“‘People like to believe that their own political beliefs are rational, that they’re a sensible response to the world around them, so when we come along and say, “Maybe there are these predispositions, influential but perhaps not fully in your conscious awareness,” that’s not the way we like to view our own political beliefs.'” – h/t mr. robert ford!

Sex-Related Neuroanatomical Basis of Emotion Regulation Ability“Behavioral research has demonstrated that males have a higher capability of regulating their own and others’ emotions than females; however, little is known about the sex-specific brain mechanisms involved in emotion regulation ability…. we found the sex differences in the neuroanatomical basis of emotion regulation ability. Males showed a stronger positive relation between emotion regulation ability and regional gray matter volume (rGMV) in the right dorsolateral prefrontal cortex. In contrast, females demonstrated a stronger positive relation between emotion regulation ability and rGMV in an anatomical cluster that extends from the left brainstem to the left hippocampus, the left amygdala and the insular cortex.”

More Maps of the American Nations – from jayman.

Privilege and Morality“Our species isn’t good at nuance. The ‘privilege’ debate will and must take place in a morally charged context. It is not possible to sanitize the discussion by scrubbing it free of moral emotions. That is one of the many reasons why it is so important to understand what morality is and why it exists. It does not exist as a transcendental entity that happened to pop into existence with the big bang, nor does it exist because the Big Man upstairs wants it that way. It exists because it evolved.” – from helian.

Economic Growth & Human Biodiversity“Economic growth in lower-IQ countries does not invalidate either the reality of IQ differences between countries or the persistence of those disparities.” – from pseudoerasmus.

Good Fences: The Importance of Setting Boundaries for Peaceful Coexistence“Switzerland is recognized as a country of peace, stability and prosperity. This is surprising because of its linguistic and religious diversity that in other parts of the world lead to conflict and violence. Here we analyze how peaceful stability is maintained. Our analysis shows that peace does not depend on integrated coexistence, but rather on well defined topographical and political boundaries separating groups, allowing for partial autonomy within a single country. In Switzerland, mountains and lakes are an important part of the boundaries between sharply defined linguistic areas. Political canton and circle (sub-canton) boundaries often separate religious groups. Where such boundaries do not appear to be sufficient, we find that specific aspects of the population distribution guarantee either sufficient separation or sufficient mixing to inhibit intergroup violence according to the quantitative theory of conflict. In exactly one region, a porous mountain range does not adequately separate linguistic groups and that region has experienced significant violent conflict, leading to the recent creation of the canton of Jura.”

Was Territoriality Important in the Pleistocene? A Commentary on Johnson and Toft – @peter turchin’s.

Southern Europe is suspicious: the evolution of trust in the EU – ess and wvs results.

Trust and In-Group Favoritism in a Culture of Crime [pdf] – h/t ben southwood! who tweeted: “Areas in Palermo with high Mafia involvement have lower generalised trust but higher in-group favouritism.”

In dogs’ play, researchers see honesty and deceit, perhaps something like morality – woof!

What is Phonemic Diversity? — And Does It Prove the Out-of-Africa Theory? – h/t james winters!

How a Protestant spin machine hid the truth about the English Reformation“It seems that in 1533, the year of Henry’s break from Rome, traditional Catholicism was the religion of the vast majority of the country. And in most places it was absolutely thriving. It had developed a particularly English flavour, with a focus on the involvement of ordinary people in parish churches, village greens, plays, and pageants – much of which seemed to involve a good deal of community parties, dancing, and drinking. It is true that English religion in the early 1500s was not especially studious or erudite. The people did not spend hours a day in biblical studies, contemplation, and moralising in the manner of the more intense European reformers. But England had a nationally cohesive spirituality that was alive and exuberant, with a distinctly community feel…. The conclusion of this modern grassroots scholarship is that bulldozing the Catholic Church off the face of medieval England was not a ‘bottom up’ revolution in which Henry merely acquiesced to his people’s wishes by throwing off a widely hated foreign domination. To the contrary, it looks increasingly like Henry and his circle imposed the Reformation ‘top down’, unleashing 100 years of deep anger and alienation that was only overcome by sustained politicking and ruthless force.” – h/t william briggs!

bonus: “No Oxygen? No Problem!” Says Squid That Can Shut Down Its Metabolism – h/t kyle hill!

bonus bonus: A Theory on How Flightless Birds Spread Across the World: They Flew There

bonus bonus bonus: Chicken project gets off the ground“Effort aims to unravel the history of bird’s domestication.” – cluck!

(note: comments do not require an email. humble humboldt squid!)

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!)

holy toledo! two week’s worth of links! happy friday! (^_^)

John Derbyshire On Nicholas Wade’s A TROUBLESOME INHERITANCE – A Small, But Significant, Step For Race Realism“Wade raises high the banner of race realism and charges head-on into the massed ranks of the SSSM. He states his major premise up front, on page two: ‘New analyses of the human genome have established that human evolution has been recent, copious, and regional.’ Those last four words are repeated at intervals throughout the narrative. They are, as it were, the keynote of the book; Wade returns to them many times to anchor his observations — and some speculations — on the history and development of human societies.” (my emphasis there – h.chick)

henry harpending on science“[T]his is perhaps at the heart of the slander of the so called hbd-crew that circulates. Most of us are really interested, in our hearts, in theory and models. This is the way that most of science works…. You state somewhere that the hbd crew is obsessed with IQ. Seems so, but wait! IQ is literally the only thing that can be reliably measured of a whole constellation of interesting traits. It really does work in the sense of telling one whom to hire or whom to admit to graduate school. You also speak of what we ‘believe’ but the whole fun of science is falsifying hypotheses, not believing them. I would give my eye teeth (if I had them) to come up with something besides IQ to look at.” (my emphasis again – h.chick)

Digging For Gold: Study Says Your Race Determines Your Earwax Scent – h/t hbd bibliography!

Austronesians Out of the Cauldron“…the emergence of Austronesians. Linguistics and archaeology already were rather clear on the pattern of expansion, and when. But now an ancient DNA remain from off the coast of Fujian dated to ~8,000 years ago solidifies in totality the where and when. This is not an argument anymore.” – from razib.

New Diet, Sexual Attraction May Have Spurred Europeans’ Lighter Skin“[A] new study of ancient DNA concludes that European skin color has continued to change over the past 5000 years, suggesting that additional factors, including diet and sexual attraction, may also be at play.” – see also: Natural selection has altered the appearance of Europeans over the past 5,000 years.

It made their brown eyes blue…“A recent report in PNAS shows the inhabitants of the Ukraine and its environs had much darker hair, skin, and eyes back in the Bronze Age and earlier.” – from greg cochran.

Did Europeans become white in historic times? – from peter frost.

Pause Is Seen in a Continent’s Peopling“Using a new method for exploring ancient relationships among languages, linguists have found evidence further illuminating the peopling of North America about 14,000 years ago. Their findings follow a recent proposal that the ancestors of Native Americans were marooned for some 15,000 years on a now sunken plain before they reached North America.”

The place of the Armenian language in the Indo-European family“A very interesting talk at the Library of Congress making a good case for a Greek-Phrygian-Armenian clade within the Indo-European family.” – from dienekes.

One Million Brits ‘Descended from Vikings” DNA Study Claims“Around one million Britons, or one in 33 men across the UK, can claim direct descent from Vikings, according to a new DNA study. Men from the far north of Scotland were most likely to provide a direct match with almost a third (29.2%) of the men from the Shetland Islands testing positive for Viking blood.” – h/t ed west!

Genetic Architectures“The point is that the genetic architecture of a quantitative trait does not have to be the same in different populations of the same species. For example, I have the impression that height is not as highly polygenic in Pygmies as it is most other human populations. There’s a particular region on chromosome 3 that seems to influence height- you don’t see such a concentration in Europeans.” – another from greg cochran.

Molecular genetic contributions to socioeconomic status and intelligence – h/t billaire! who tweeted: “21% of the var. in education level, 18% of SES, 29% of cognitive ability explained by COMMON SNPs in Scottish sample.”

Study finds genetic link between height and IQ“A team of researchers at Edinburgh University in Scotland has found a correlation between genes associated with height and those associated with intelligence. In their paper published in the journal Behavior Genetics, the group describes how they studied the DNA of 6,815 unrelated people and discovered what they describe as a direct correlation between height and intelligence—taller people are smarter, they say.”

HVGIQ: Puerto Rico – from jason malloy.

Population differences in intellectual capacity: a new polygenic analysis – peter frost on davide piffer’s work.

Evidence for the general factor of personality as social-effectiveness

Intelligent people are more likely to trust others“Intelligent people are more likely to trust others, while those who score lower on measures of intelligence are less likely to do so, says a new study. Researchers based their finding on an analysis of the General Social Survey, a nationally representative public opinion survey carried out in the United States every one to two years.” – h/t mr. mangan, esq!

Openness to experience and aesthetic chills: Links to heart rate sympathetic activity“These results suggest links between openness to experience and sympathetic nervous system activity explaining, at least in part, relationships of openness to such traits as aesthetic chills.” – h/t stuart ritchie!

Psychological refractory period in introverts and extraverts“Evidence for faster stimulus analysis in extraverts compared to introverts.”

‘Free to Be’ Boys and Girls: 40 Years After the Failed Gender Revolution“1974’s ‘Free to Be…You and Me’ feels like an eternity ago. And, amazingly, kids and adults have yet to morph into mutually respectful, non-gendered human persons.” – from christina hoff sommers.

Personality Regions: The Friendly Midwest, the Left Coast and the Wicked (Possibly Irish) Witch of the Northeast – from staffan.

Want Success? Choose the Right Parents“Gregory Clark’s startling new book, ‘The Son Also Rises,’ asks you to rethink everything you thought you knew about social mobility. His research, if it’s correct, isn’t good news. It says that socio-economic status is mostly a matter of nature not nurture, and suggests that trying to help the disadvantaged move up won’t make much difference.” – h/t alice teller! – see also: Social mobility: Have and have not“Mr Clark follows his logic to an unexpectedly egalitarian end. Redistribution is sensible, he argues, not in order to boost mobility but because mobility is intractably low. The cream will rise regardless, and so paying extraordinary salaries to capable workers is unnecessary. If high rates of mobility are used to excuse or justify inequality, he suggests, then the reality of low mobility implies something quite different: t hat great inequality serves little purpose and redistributing income from the rich to the poor might raise overall welfare at little economic cost. This makes for uncomfortable reading for those of all ideological persuasions.”

Why HBD“As I have tired to explain in my earlier post, Environmental Hereditarianism, the behavioral and physical traits of people are environmentally context-dependent. The broad environmental context regulates the expression of the genes. There is *not* a dichotomy between genes and ‘environment’. Nor could there be one – we are always ‘with’ both. The broad environment includes geography, climate, technology, and prevailing social landscape (otherwise known as ‘culture’). When the social-technological-geographic landscape changes, you can have broad behavioral change all without genetic change. This explains secular changes that occur too quickly to be a result of evolution, such as the sexual revolution, the modern rise in irreligiosity, the increase in the obesity rate, etc.” – from jayman.

Key connection“Biologists zero in on role of plasticity in evolution. For more than a century, scientists have suggested that the best way to settle the debate about how phenotypic plasticity — the way an organism changes in response to environment — may be connected to evolution would be to identify a single mechanism that controls both. Harvard researchers say they have discovered just such a mechanism in insulin signaling in fruit flies. Cassandra Extavour, an associate professor of organismic and evolutionary biology, and grad student Delbert André Green II were able to show that a single molecular pathway plays a role in both heritable changes in the flies’ number of ovarioles — egg-producing compartments in the ovaries — and in how they react to their environments by shutting down some ovarioles. The study is described in a paper published this month in the Proceedings of the Royal Society B. ‘This is the first example, to my knowledge, that shows this link — between heritability and plasticity — being controlled by the same mechanism,’ Extavour said. ‘What we’ve done with this paper is show that an important trait that controls how many offspring a fruit fly will have exhibits both heritable variation and phenotypic plasticity, and that both are controlled by insulin signaling.'” – h/t steven pinker!

Morality and the Lament of the Liberal Atheists“Moral relativism is the ground state of living things. It doesn’t work for a social species like ours. If every one of us tried to monopolize all the available resources within his grasp at the cost of everyone else, the chances that any given individual would survive and reproduce would be drastically reduced. Therefore, morality. It exists because, from an evolutionary perspective, it works. It will continue to function just as it always has, even if 100,000 philosophers shout at the top of their lungs that it’s irrational. Of course it is, but it doesn’t matter. We will continue to perceive the good and evil that seem so real to our imaginations as absolutes. It is our nature to do so….” – from helian

coolest. story. ever. (in the past two weeks.): The Woman Who Can Will Herself Out Of Her Body – h/t keith laws!

Hypothesis on Why Northwest Europe Began Outbreeding“It could just be coincidence that the outbreeding areas that coincide with other positive hajnal line traits were also lands conquered by men from tribes with the traditions of Germanic kingship. These kings were illiterate barbarians seeking legitimacy and thinking long term at the security of their line ruling…. This is a hypothesis, but the position these rulers were in was one of new conquerors in foreign lands. They needed to create and encourage loyalty in the natives as well as find a way to secure their individual line as king in a manner that was different from what their people, the conquerors, were accustomed to. The Church, an institution eager for power in a new area as well, offered an opportunity to import a political infrastructure and change the social make up of their new lands. Even moreso in England than the rest of core Europe, the Church and the elite’s motivations and goals overlapped perfectly. Christianity was new to them and new to the Britains, but as conversions mounted, it was a shared trait amongst them all. That shared identity was the warrior-chiefs’ way to have rule and kingship legitimized. That shared identity made the natives and newcomers men of Kent or East Anglia, later England, and not of the clan.” – good stuff from son of brock landers!

Rise of the West and the Hajnal line – from mr. mangan, esq.

The Low Fertility Of Urban Liberals Is A Feature Not A Bug – from heartiste.

The Achilles’ Heel of Northern Europeans: Outbreeding? – from alfred clark.

The Medieval Mind“The medieval character was not just about poisoning rivals and raping their daughters. That picture misses the raw and unquestioned nationalism, the impulsivity, the superstition, the childishness (in Barbara Tuchmann’s words), the present time-orientation.” – from elijah.

On Digit Ratio and its Implications – from sisyphean the mad contrarian.

psychO – from the awesome epigone. linking to this mostly for the pictures – awwww! (^_^)

The genes that mean you have a good ear for music“Musical aptitude may be partly down to genes that determine the architecture of the inner ear.” – h/t simon makin! – alternatively: you, too, can have perfect pitch! (~_^)

The Origin of Ideology“Are left and right a feature (or bug) of evolution?” – review of a couple of books.

Do Women’s Mate Preferences Change Across the Ovulatory Cycle? A Meta-Analytic Review – answer: yes. – see also: Intersexual conflict across women’s ovulatory cycle“Results indicate that (a) men are particularly self-assertive toward partners when their partners are fertile; (b) similarly, women are especially self-assertive toward partners when they are fertile; (c) women report engaging in more behaviors that resist male vigilance and mate-guarding when they are fertile, especially in ways that are unobservable to male partners; (d) these effects are especially strong when women themselves report greater attraction to men other than partners when they are fertile, compared to the luteal phase.” – h/t robert burriss!

Study finds less cooperation among women than among men where hierarchy is involved“‘When I studied young children, I noticed that boys were typically interacting in groups, and girls tended to focus on one-on-one relationships,’ said Benenson, the study’s lead author, who explored similar questions in her book Warriors and Worriers. ‘There is even evidence that these differences exist in six-month-olds – but you can see it with the naked eye by about five or six years old, where boys form these large, loose groups, and girls tend to pair off into more intense, close friendships.’ What makes those differences particularly provocative, Benenson said, is that chimpanzees organize their relationships in nearly identical ways. ‘Chimpanzee males usually have another individual they’re very close with, and they may constantly battle for dominance, but they also have a larger, loose group of allies,’ Benenson said. ‘When it comes to defeating other groups, everybody bands together. I would argue that females don’t have that biological inclination, and they don’t have the practice.'”

The Reason Early Humans May Have Practiced Infant Cannibalism – mmmmmmm! – h/t diana fleischman!

Personality Traits and Body Mass Index in a Korean Population“Compared with the normal weight groups, overweight and obese men scored higher on openness to experience and lower on conscientiousness. Overweight and obese women scored lower on neuroticism and openness to experience and higher on agreeableness. Extraversion was positively associated with BMI in men (β = 0.032, P<0.05). BMI and waist circumference were significantly increased in individuals who were less dutiful. In women, neuroticism was inversely associated with BMI (β = −0.026, P<0.05). Openness to experience was negatively, and agreeableness was positively, associated with BMI (openness to experience: β = −0.072, agreeableness β = 0.068) and waist circumference (openness to experience: β = −0.202, agreeableness: β = 0.227) (P<0.05).”

The Supergene That Paints a Liar

This Island Life“The strange biology of island populations highlights the role of chance, not just selection, in evolutionary change.” – h/t john belmont!

Competition May Not Be the Driving Force of Species Diversity After All – h/t robert ford!

Big Testicles Drive Genetic Evolution: Size Does Matter After All“[A]nimals with larger testis having an increased speed of genome evolution, researchers have found.”

Bye bye RNA world

The Phylogeny of Everything, the Origin of Eukaryotes, and the Rules of Taxonomy: Death to Archaea, Bacteria, and Eucarya! Long live Archaebacteria, Eubacteria, Eukaryota, and Prokaryota!

Genomics/Bone Marrow Donation: Next-gen DNA sequencing enables reliable donor matching service

Is Ed Houben Europe’s most virile man?“Ed Houben has an unusual pastime. He has slept with scores of women who seek him out for his legendary powers of insemination…. Ed Houben has come to see his daughter for the first time. He talks gently to the six-week-old baby, and little Madita looks up at him. She is, he says, his 98th child.”

The Costume of Shangri-La: Thoughts on White Privilege, Cultural Appropriation, and Anti-Asian Racism – it’s worth quoting the whole abstract: “This piece poses cultural appropriation as an undertheorized aspect of white privilege in White Privilege Studies. By way of narrative exploration, it asserts that a paucity of scholarship on Orientalism and anti-Asian racism has created a gap in White Privilege Studies that curbs its radical transformative potential. It argues for the value of a structural and historically focused lens for understanding the issue of cultural appropriation, and extends questions of culture and race relations beyond the borders of the United States. It also explores the complex ways that interracial and transnational relationships can influence white racial identity, and illustrates the disruptive potential that queer interracial relationships can offer to dominant historical patterns of white behavior.” – (~_^) h/t ben southwood!

bonus: mr. mangan’s book! (^_^): Smash Chronic Fatigue: A Concise, Science-Based Guide to Help Your Body Heal, and Banish Fatigue Forever

bonus bonus: Backing the Big Bang“In breakthrough, astronomers find evidence of speedy ‘cosmic inflation’ of universe”

bonus bonus bonus: Does Time Flow? (video) – d*mn physicists! (~_^)

bonus bonus bonus bonus: Elephants Hear Age, Gender, Ethnicity in Human Voices – elephants are awesome!

bonus bonus bonus bonus bonus: Dinosaurs are not Extinct – YAAAAAAAAYYYYY!!!! – h/t steve stewart williams!

bonus bonus bonus bonus bonus bonus: The stripy stick insect that walked with dinosaurs“This is the earliest known plant-mimicking stick insect, its fragile body preserved for 126 million years in the dusty rocks of north-east China.” – h/t jason moore!

bonus bonus bonus bonus bonus bonus bonus: Flies That Do Calculus With Their Wings“The wings of fruit flies beat about 250 times a second.” – h/t kyle hill!

bonus bonus bonus bonus bonus bonus bonus bonus: Portolan Charts ‘Too Accurate’ to be Medieval – h/t heresiarch!

(note: comments do not require an email. polite elephant steps over fence.)

Your Ancestors, Your Fate“The notion of genetic transmission of ‘social competence’ — some mysterious mix of drive and ability — may unsettle us. But studies of adoption, in some ways the most dramatic of social interventions, support this view. A number of studies of adopted children in the United States and Nordic countries show convincingly that their life chances are more strongly predicted from their biological parents than their adoptive families. In America, for example, the I.Q. of adopted children correlates with their adoptive parents’ when they are young, but the correlation is close to zero by adulthood. There is a low correlation between the incomes and educational attainment of adopted children and those of their adoptive parents. These studies, along with studies of correlations across various types of siblings (identical twins, fraternal twins, half siblings) suggest that genetics is the main carrier of social status.” – from gregory clark. see also The Son Also Rises: Surnames and the History of Social Mobility.

Reductionism! Determinism! Straw-man-ism!” The main problem, it seems to me, is a fundamental misunderstanding of what genetics as a science studies and how it relates to the function of complex systems. The following statements are not contradictory: 1. The function of a complex system emerges from the complex and dynamic interactions between all of the components of the system, in a context- and experience-dependent manner. 2. Variation in single components of the system (or in multiple components) can affect how it functions. Geneticists investigate the second question. Showing that variation in Gene X affects the behaviour or outcome of a system is not the same as saying that Gene X fully determines that behaviour or fully accounts for the entire system. Gene X is just a piece of DNA sitting in a cell somewhere – it doesn’t do anything by itself. But a *difference* in Gene X can account for a *difference* in how the system works. – from kevin mitchell.

The Problem with HBD, the Dark Enlightenment, Neoreaction, Alt-Rightism, and All That Jazz – READ THIS! – from jayman (and misdreavus).

There’s nothing wrong with looking for ‘gay genes’“The Left loves to tell the Right that it’s anti-science, pointing (not without reason) to the correlation between conservative beliefs and a failure to come to terms with the scientific facts of evolution and human-caused climate change. But there’s a subtler tendency on the Left; a fear of research into human nature, in case the findings are in some way politically uncomfortable.”

Evolution equally efficient in removing deleterious variants in Europeans and West Africans“…but apparently not in Denisovans who accumulated deleterious mutations at a higher rate than modern humans.” – @dienekes’.

Scientists unlock a ‘microbial Pompeii’“An international team of researchers have discovered a ‘microbial Pompeii’ preserved on the teeth of skeletons around 1,000 years old. The key to the discovery is the dental calculus (plaque) which preserves bacteria and microscopic particles of food on the surfaces of teeth, effectively creating a mineral tomb for microbiomes.”

The effect of paternal age on offspring intelligence and personality when controlling for paternal trait level [pdf] – “We examined the effect of father’s age at birth on offspring intelligence, head circumference and personality traits. Using the Minnesota Twin Family Study sample we tested paternal age effects while controlling for parents’ trait levels measured with the same precision as offspring’s. From evolutionary genetic considerations we predicted a negative effect of paternal age on offspring intelligence, but not on other traits. Controlling for parental intelligence (IQ) had the effect of turning an initially positive association non-significantly negative. We found paternal age effects on offspring IQ and Multidimensional Personality Questionnaire Absorption, but they were not robustly significant, nor replicable with additional covariates. No other noteworthy effects were found.” – from lars penke.

Reversed hierarchy in the brain for general and specific cognitive abilities: A morphometric analysis“Here, we analyze gray matter with three morphometric indices (volume, cortical surface area, and cortical thickness) at three levels of the intelligence hierarchy (tests, first-order factors, and a higher-order general factor, g)…. The key finding reveals substantial variability in gray matter correlates at the test level, which is substantially reduced for the first-order and the higher-order factors. This supports a reversed hierarchy in the brain with respect to cognitive abilities at different psychometric levels: the greater the generality, the smaller the number of relevant gray matter clusters accounting for individual differences in intelligent performance.” – h/t ben southwood!

A nice bunch of flowers“The general factor of intelligence is strongest at lower levels of intelligence. It may be a case of ‘All neurones to the pump’. When abilities are low, most problems are difficult. In such cases, all resources have to be thrown at the problem. When abilities are higher there is more spare capacity for differentiation of abilities. Brighter persons have a lower proportion of their abilities accounted for by a common factor, even though the have higher absolute abilities.” – from dr. james thompson.

GED scores by Ethnicity and Nation – from chuck @human varieties.

The Unfortunately Innate Nature of Intelligence“You cannot blame people for being what they were born, and you cannot expect them to do what they cannot.”

Psychologist on a mission to give every child a learning chip“Prof Robert Plomin wants educators to take notice of genes, and has a new big idea – personalised learning.”

Fruit-loving lemurs score higher on spatial memory tests“Food-finding tests in five lemur species show that fruit-eaters may have better spatial memory than lemurs with a more varied diet. The results support the idea that relying on foods that are seasonally available and far-flung gives a competitive edge to individuals with certain cognitive abilities — such as remembering where the goodies are.”

What Does Our DNA Say About How We Look?“A biologist aims to profile suspects from genetic material left at crime scenes.’ – h/t matthew wygant!

Four Lame Responses to Sam Harris’ Moral Landscape Challenge“Moral emotions, like every other evolved trait, exist because their presence increased the probability that the genes responsible for the existence of those traits would survive and reproduce. Moral emotions, and the associated illusions of the existence of Good and Evil as things in themselves, exist as subjective impressions in the minds of individuals.” – from helian.

Free will beliefs and motivation to punish“In a paper forthcoming in the Journal of Personality and Social Psychology, Cory J. Clark and co-authors provide evidence that widespread belief in the existence of free will is bolstered by a fundamental desire to punish wrongdoers…. As Clark et al. put it, ‘There seems little doubt that the subjective experience of choosing and acting supports people’s belief in free will, but our findings suggest another powerful motivating factor: the human impulse to blame and punish. People believe in free will – at least in part – because they wish to affirm that people who do immoral things could have and should have acted differently’.”

A small contribution to the free-will thingy – from elijah.

Is there a ‘dark intelligence’? Emotional intelligence is used by dark personalities to emotionally manipulate others“Narcissism and psychopathy increased link between emotional intelligence facets and emotional manipulation.” – h/t claire lehmann!

Theory of mind: did evolution fool us?“Although sophisticated ToM is believed to have high adaptive fitness, broad experimental evidence from behavioural economics, experimental psychology and linguistics point towards limited recursivity in representing other’s beliefs.” – h/t neuroskeptic!

Creativity and personality in classical, jazz and folk musicians“[J]azz musicians are more frequently engaged in extracurricular musical activities, and also complete a higher number of creative musical achievements. Additionally, jazz musicians show higher ideational creativity as measured by divergent thinking tasks, and tend to be more open to new experiences than classical musicians. This study provides first empirical evidence that jazz musicians show particularly high creativity with respect to domain-specific musical accomplishments but also in terms of domain-general indicators of divergent thinking ability that may be relevant for musical improvisation.” – h/t mary louise cowan!

Migration and interaction in a contact zone: mtDNA variation among Bantu-speakers in southern Africa“In this study, we analyze complete mtDNA genome sequences from over 900 Bantu-speaking individuals from Angola, Zambia, Namibia, and Botswana to investigate the demographic processes at play during the last stages of the Bantu expansion. Our results show that most of these Bantu-speaking populations are genetically very homogenous, with no genetic division between speakers of Eastern and Western Bantu languages. Most of the mtDNA diversity in our dataset is due to different degrees of admixture with autochthonous populations.”

Silver Blaze“[I]n most parts of Europe, it looks as if modern populations inherited the three EEF/WHG/ANE groups (Levantine farmers, West Hunters and Sibermen) via only two proximate ancestral populations. Europe at the time was almost entirely occupied by Sardinian-like farmers – then another population moved in, one that had about 3 times as much West Hunter as Sibermen.” – from greg cochran.

Replacement or continuity?“Ancient DNA seems to promise a clearer picture because the only source of uncertainty is the age of the skeletal material. Unfortunately, this new method is more sensitive to uncertainty from another source: natural selection. Late hunter-gatherers and early farmers had to adapt to different environments. There certainly was a genetic divide between the two, but did it result from differences in origin or from differences in natural selection?” – from peter frost.

Dystopian diversity – from the awesome epigone.

“I regret studying social anthropology” – me, too. *sigh* – see also the original post.

The parasite that escaped out of Africa: Tracing origins of malaria parasite“An international team has traced the origin of the second-worst malaria parasite of humans to Africa. The closest genetic relatives of human *Plasmodium vivax* were found only in Asian macaques, leading researchers to believe that *P. vivax* originated in Asia. This study overturns that, finding that wild-living apes in central Africa are widely infected with parasites that, genetically, are nearly identical to human *P. vivax*.” – h/t hbd bibliography!

Are Rich People Really That Selfish? – New Study Looks At Impact of Socio-Economic Status on Altruistic Tendencies“‘Our personality impacts every aspect of our life – the choices we make, the people we surround ourselves with, the career we pursue, the way we respond to life experiences, the way we manage our finances, and whether or not we share our good fortune,’ explains Dr. Jerabek, president of the company…. [H]ow individuals conduct themselves when they have money has everything to do with who they are as a person. Money doesn’t make a person more or less selfish. If you are a genuinely kind and giving person, you’ll continue to be that way no matter how many zeros are on your paycheck.'”

Babies born in England and Wales to non-UK born mothers infographic“Total Fertility Rate in England/Wales by where mother born: 4.3 Afghanistan, 3.8 Pakistan, 3.3 Nigeria, 2.4 India, 1.8 UK.”

The Tale of a CRISPR Clone – from razib.

Graft Probe in Scientific Community Widens in Southern China“A corruption probe has so far snared more than 50 scientists and research administrators in Guangdong, one of China’s wealthiest provinces.”

Quick Winter Olympics Digit Ratio Note – from sisyphean the mad contrarian.

Scientist proposes revolutionary naming system for all life on Earth“…a naming convention based on genome sequencing to enhance the way organisms are classified.” – h/t super mario!

Burials uncovered in Ireland reflect fusion of Paganism and Christianity“Excavations at Caherconnell in County Clare, Ireland, have uncovered ancient burials that reflect a fusion of Pagan practices with Christianity. Although it was initially believed that Christianity was well established in Ireland by the 5th Century, the latest finding reveals that Celtic Paganism was not quick to die out.” – h/t derek hopper!

The Society of Mutual Autopsy“The Society of Mutual Autopsy was an organisation formed in the late 1800s to advance neuroscience by examining dead members’ brains and to promote atheism by breaking sacred taboos.”

Heavy metal bands per 100,000 people – global map.

A Campus More Colorful Than Reality: Beware That College Brochure – h/t conrad hackett! who tweeted: “The whiter the college, the more diversity depicted in the brochures.”

bonus: Confirmed: Oldest Fragment of Early Earth is 4.4 Billion Years Old

bonus bonus: Hubble Finds Possible Oldest Object Ever Seen“The Hubble Telescope’s new set of Frontier Fields images includes a galaxy some 13-billion light-years away, which makes it a candidate for the most distant object ever seen.”

bonus bonus bonus: Rust Cohle, Guidance Counselor – heh. (~_^)

(note: comments do not require an email. rust cohle for president!)


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