Archives for posts with tag: brain development

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!)

Advertisements

‘Rare’ Gene Common in African Descendants, May Contribute to Heart Disease“Researchers at Weill Cornell Medical College have found that a genetic variation that is linked to increased levels of triglycerides — fats in the blood associated with disorders such as heart disease, type 2 diabetes, obesity and stroke — is far more common than previously believed and disproportionally affects people of African ancestry…. The finding offers a clue as to why Africans and people of African descent have an increased risk of cardiovascular disease and type 2 diabetes compared to many other populations, says the study’s senior author, Dr. Ronald Crystal, chairman of genetic medicine at Weill Cornell. African Americans with the variant had, on average, 52 percent higher triglyceride levels compared with blacks in the study who did not have the variant…. The gene variant the scientists studied is a single point mutation — a replacement of one of DNA segment with another — in the ApoE gene, which carries fats and other molecules through the blood.” – h/t hbd bibliography!

A gene mutation for excessive alcohol drinking found“UK researchers have discovered a gene that regulates alcohol consumption and when faulty can cause excessive drinking…. [M]ice with a genetic mutation to the gene Gabrb1 overwhelmingly preferred drinking alcohol over water, choosing to consume almost 85% of their daily fluid as drinks containing alcohol…. Dr Quentin Anstee, Consultant Hepatologist at Newcastle University, joint lead author said: ‘It’s amazing to think that a small change in the code for just one gene can have such profound effects on complex behaviours like alcohol consumption.’ – see also Firewater from greg cochran.

Predicting Human Body Height from DNA“Predicting tall stature from these 180 DNA variants resulted in an accuracy of 0.75 on a scale from 0.5 (meaning random prediction) to 1.0 (completely accurate prediction). ‘Although the achieved DNA-based prediction accuracy for tall stature is still somewhat lower than we previously established for eye color, hair color and age,’ said Kayser, ‘I expect that upcoming new knowledge on height genetics will further increase the accuracy in predicting tall stature, and eventually the full range of body height, from DNA.'”

Study Connects Dots Between Genes, Human Behavior“The team studied individuals with a rare disorder known as Williams syndrome. By measuring neural activity in the brain associated with the distinct language skills and facial recognition abilities that are typical of the syndrome, they showed that Williams is due not to a single gene but to distinct subsets of genes, hinting that the syndrome is more complex than originally thought.”

Different Gene Expression in Male, Female Brains May Help Explain Brain Disorder Differences“UCL scientists have shown that there are widespread differences in how genes, the basic building blocks of the human body, are expressed in men and women’s brains. Based on post-mortem adult human brain and spinal cord samples from over 100 individuals, scientists at the UCL Institute of Neurology were able to study the expression of every gene in 12 brain regions…. They found that the way that the genes are expressed in the brains of men and women were different in all major brain regions and these differences involved 2.5% of all the genes expressed in the brain.” – h/t heartiste!

Only two genes maketh the man…or mouse“The defining genetic feature of maleness, the Y chromosome, contains only two genes that are absolutely essential for male function – at least in mice.” – “male function” = producing sperm, apparently. and taking out the garbage of course. (~_^)

Male facial masculinity as a cue to health outcomes“Although both attractiveness and rated health were associated with better actual health in the past and future (mainly indexed by lower antibiotic use), results were mixed for masculinity. With respect to respiratory illnesses, facial masculinity (assessed using morphometric techniques) was associated with better past health but with worse future health.” – h/t hbd bibliography!

HPV: Sex, cancer and a virus“Human papillomavirus is causing a new form of head and neck cancer — leaving researchers scrambling to understand risk factors, tests and treatments.” – h/t john durant!

Gut bacteria could make cancer treatments more effective, researchers find“[M]ice with reduced levels of bacteria in their gut were less responsive to treatments than mice that had a normal microbiota.”

When We Lose Antibiotics, Here’s Everything Else We’ll Lose Too – *gulp* =/

Arroyo del Vizcaíno, Uruguay: a fossil-rich 30-ka-old megafaunal locality with cut-marked bones – evidence for humans in uruguay 30,000 years ago? hunting giant sloths?

Who Built Serpent Mound? – dunno.

Sexual selection on the American frontier – re. nineteenth century mormons – from jason collins.

Jealousy in a small-scale, natural fertility population: the roles of paternity, investment and love in jealous response – jealousy rates in a non-w.e.i.r.d. population (the himba of namibia) – “In this population, the majority of both men and women report greater distress over a sexual infidelity, with men reaching an almost unanimous consensus (96%). Despite the skew for both men and women, there is a significant sex difference in the direction predicted by the evolutionary hypothesis….” – h/t andrew badenoch!

Study examines potential evolutionary role of ‘sexual regret’ in human survival and reproduction“[The results] suggest that men are more likely to regret not taking action on a potential liaison, and women are more remorseful for engaging in one-time liaisons.”

A Hot Wife Means A Happier Marriage“[M]en are happier with attractive women and women don’t care as much about men’s looks. Stop the goddamned presses! You mean men and women are…*GASP*…different?” – @chateau heartiste. (^_^) – original research article.

Oxytocin leads to monogamy: Hormone stimulates the brain reward system when viewing the partnerthe luuuuuuuuv hormone! (^_^)

Promiscuous mouse moms bear sexier sons“Males make more pheromone if mama had access to many mates”

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 ed west!

The Sour Grapes of Pisa – from staffan.

The envirome and the connectome: exploring the structural noise in the human brain associated with socioeconomic deprivation – from neuroskeptic: “People from deprived parts of Glasgow have brains that are more ‘random’ structurally than those from rich areas.” – and from jayman: “Of course IQ has nothing to do with it… ;)”

Poor people’s poor sense – from the awesome epigone.

Meat, egg and dairy nutrient essential for brain development“Asparagine, found in foods such as meat, eggs, and dairy products, was until now considered non-essential because it is produced naturally by the body. Researchers at the University of Montreal and its affiliated CHU Sainte-Justine Hospital found that the amino acid is essential for normal brain development. This is not the case for other organs.”

Different rates of first admissions for psychosis in migrant groups in Paris“Our findings suggest that Sub-Saharan migrants were identified as the most vulnerable migrant group for developing psychosis in France, but additional work is warranted to confirm these trends.” – h/t neuroskeptic! – see also Redneck Psychiatrists from greg cochran.

Nations of Canada – from jayman.

Another Look at ‘The Rise of the West’ – But With Better Numbers“The North Sea begins to diverge from the rest of Europe long before the ‘West’ begins its more famous split from ‘the rest….’ [W]e can pin point the beginning of this ‘little divergence’ with greater detail. In 1348 Holland’s GDP per capita was $876. England’s was $777. In less than 60 years time Holland’s jumps to $1,245 and England’s to 1090. The North Sea’s revolutionary divergence started at this time.” – from t.greer.

When it comes to diversity, most of us vote with our feet“Liberals are almost as likely to flee diversity as conservatives, according to new research by Prof Eric Kaufmann for Demos. Some 61 per cent of white people who were ‘very comfortable’ with mixed marriages (the best indicator of views on race) moved to whiter areas during the period, compared to 64 per cent of those who were ‘fairly uncomfortable’.” – from “utterly sh** in every way” ed west.

Race, Race, Race, Race, Race, Race, Race, Race, Race“*Race is real*. In aggregate, human populations *differ*. Because of those differences, their interests can differ, too — and that can lead to various kinds of unpleasantness. Birds of a feather, whether we approve or not, still tend to flock together.” – from malcolm pollack.

How to have a sensible conversation about immigration“The poor of the world are on the move, eager to live and work in rich nations. What are the consequences? Talking about them cannot be a taboo.” – h/t steve sailer!

3 Reasons Diversity Isn’t Working – @theden.

How Britain became ashamed of being Great: Major new book argues liberal self-loathing threatens the values that define our nation – a MUST READ from daniel hannan! buy the book, too: How We Invented Freedom & Why It Matters.

Study: Having daughters makes parents more likely to be Republican – i thought it was democrats? – and on that note: Does Having Sisters Make You Conservative? – h/t avi tuschman!

Atheists get sweaty when daring God“When you get anxious or emotionally aroused, you sweat. Not a lot, but enough to be detected using electrodes on the finger tips. And it turns out that if you take a bunch of atheists, and get them to dare god to do horrible things, they get sweaty.” – heh! (really small sample size, tho.) – h/t anatoly!

The brains of high functioning autistic individuals do not synchronize with those of others“Our ISC [InterSubject Correlations-ISCs] results suggest that the minds of ASD individuals do not ‘tick together’ with others while perceiving identical dynamic social interactions.” – no kidding?! (~_^)

Cleansing the scientific literature – from peter frost. see also Danish Progress in Suppressing Thoughtcrime from helian.

In Israel, a Push to Screen for Cancer Gene Leaves Many Conflicted“The country has one of the highest rates of breast cancer in the world, according to a World Health Organization report. And some leading scientists here are advocating what may be the first national screening campaign to test women for cancer-causing genetic mutations common among Jews — tests that are already forcing young women to make agonizing choices about what they want to know, when they want to know it and what to do with the information.”

The Neuroscientist Who Discovered He Was a Psychopath – h/t naturalismo!

10,000-year-old house uncovered outside Jerusalem“‘Here we have evidence of man’s transition to permanent dwellings'” – cool!

Here’s why wine snobs should probably be called bacteria snobs“Differences in wine quality between vineyards have long been attributed to processing techniques and seasonal variation. But research now suggests that regional differences between wines are shaped by microbes — specifically, fungi and bacteria. Cultivating certain grape microbes may actually improve wine flavor.”

bonus: FDA may begin seizing [23andMe] home DNA testing kits – losers. (the fda, i mean.)

bonus bonus: Do We Live in the Matrix? – yes.

bonus bonus bonus: Economics of Violence: What would it cost you if you didn’t fight back?“In my 30 years of researching violence, every victim of violence who lived to tell the tale said they had a ‘bad feeling’ before the actual attack…. If an alarm goes off, respond to it. Got a bad feeling? Address it. Something nagging at you? Stop and look into it. Don’t ignore these signals. Don’t rationalize and mentally correct them. Don’t dismiss them without assessing them. Your body is built for survival and one of its hard-wired systems is designed to alert you to danger.” – h/t mr. mangan, esq!

bonus bonus bonus bonus: Sexual violence in gang neighbourhoods [in the u.k] is ‘like that in war zones’ with girls as young as 11 being groomed and raped” – =/

bonus bonus bonus bonus bonus: Latest restaurant receipt hoax – from chuck @gucci little piggy.

bonus bonus bonus bonus bonus bonus: Banks Warn Fed They May Have To Start Charging Depositors – =/ – h/t charles!

bonus bonus bonus bonus bonus bonus bonus: Over 50,000 illegal Ethiopian workers sent home from Saudi Arabia

bonus bonus bonus bonus bonus bonus bonus bonus: Fabulous example of helpful Muslims in the UK: solving local blood feud – terrific. =/ – from frau katze.

bonus bonus bonus bonus bonus bonus bonus bonus bonus: China’s rich fleeing the country — with their fortunes – h/t randall parker! – also: China’s villages vanish amind rush for the cities.

bonus bonus bonus bonus bonus bonus bonus bonus bonus bonus: Man sells testicle so he can buy a Nissan 370Z – (o_O)

bonus bonus bonus bonus bonus bonus bonus bonus bonus bonus bonus: We’d rather eat turkey“Thanksgiving is that very special holiday when we take a break from our hectic everyday lives to spend quality time with our loved ones, rediscovering all the reasons why we don’t actually live with them.” – (~_^) – from dave barry.

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

Growing your own merchant class“To explain the high incidence of Tay-Sachs among Ashkenazi Jews, some authors have invoked heterozygote advantage…. A similar situation may have developed in eastern Quebec, where the relative scarcity of British and American merchants made it easier for French Canadians to enter occupations that required literacy, numeracy, and future time orientation.” — cool! from peter frost.

A slower mutation rate has implications… and here they are“Researchers have long used an autosomal mutation rate for humans that was based on a calibration of the split between humans and chimps…. More recently, a variety of studies using a variety of techniques (latest one from ASHG 2012) all came up with a rate that is about half that value.” — important stuff from dienekes.

Learning faster with neurodegenerative disease“People who bear the genetic mutation for Huntington’s disease learn faster than healthy people. The more pronounced the mutation was, the more quickly they learned.”

Eating disorders and the extreme female brain – @the breviary.

Were you Assimilable? – superb post from m.g. over @those who can see!

How early social deprivation impairs long-term cognitive function“Social isolation during early life prevents the cells that make up the brain’s white matter from maturing and producing the right amount of myelin….”

Soapy taste of coriander linked to genetic variants“Dislike of herb traced to genes encoding odour and taste receptors.”

Looking at you: Face genes identified“5 genes have been found to determine human facial shapes.” — see also Police could create image of suspect’s face from DNA.

The Return of the Ugly, Racist Pseudoscientist with a Small Penis – kanazawa’s back. (~_^) via steve sailer.

bonus: GM corn loses its edge against pests“Corn rootworms in the US may have developed resistance to a protective chemical made by a genetically modified corn.”

bonus bonus: Giant viruses coexisted with the cellular ancestors and represent a distinct supergroup along with superkingdoms Archaea, Bacteria and Eukarya

bonus bonus bonus: After Egyptian Dictatorship Comes Epidemic Harassment Of Women“Progress is not inevitable….” — no. no it’s not. from parapundit.

bonus bonus bonus bonus: Greed and Debt: The True Story of Mitt Romney and Bain Capital — from matt taibbi. via anatoly.

bonus bonus bonus bonus bonus: In China We (Don’t) Trust

(note: comments do not require an email. don’t forget! — death to america!)

Inbreeding’s Downside Is Not All in the Genes – epigenetics and inbreeding. ruh roh. – “[T]he abnormal methylation might result from some of the rare genes exposed by inbreeding, especially if these genes help regulate the attachment and removal of methyl groups.”

Social Deprivation Has a Measurable Effect On Brain Growth

Hunter-Gatherer Energetics and Human Obesity. see also: Hunter gatherer clue to obesity“A study of the Hadza tribe, who still exist as hunter gatherers, suggests the amount of calories we need is a fixed human characteristic.”

Did Modern Humans — Not Environmental Catastrophe — Extinguish the Neandertals?

IQ estimates from wordsum scores by ancestry – from the awesome epigone.

Hispanic performance by generation and Hispanics, the NLSY 97 – from chuck (the occidentalist).

Did Ron Unz Score An Own Goal, Too? – from anatoly.

bonus: The spectre of plagiarism haunting Europe“Last month it was revealed that more than a third of a new book for law students on how to write papers properly was plagiarised, including liberal smatterings from Wikipedia. Fittingly, even the chapter on plagiarism was plagiarised.”

bonus bonus: The Redder the Better: Wing Color Predicts Flight Performance in Monarch Butterflies

bonus bonus bonus: Estimate: A new Amish community is founded every 3 and a half weeks in US

bonus bonus bonus bonus: The skin’s secret surveillance system“Microorganisms that reside on the skin found to influence host immunity.”

(note: comments do not require an email. why hello there!)

Human ancestors in Eurasia earlier than thought“Stone fragments found in Georgia suggest Homo erectus might have evolved outside Africa.”

Early Americans helped colonise Easter Island

Going ape: Ultraviolence and our primate cousins

Fair Chase“On the plains of New Mexico, a band of elite marathoners tests a controversial theory of evolution: that humans can outrun the fastest animals on earth.”

Stop On Red! The Effects of Color May Lie Deep in Evolution…

Scared of nuclear power, dummy? – from the audacious.

Women warriors show resilience similar to men – “Study examines mental health of recent veterans of US wars in Iraq and Afghanistan.” — this may apply to the women in the armed forces now, but i wouldn’t be so sure it would apply your average woman.

Superstitions Have Evolutionary Basis

Brain scans appear to show changes associated with violent behavior“A brain imaging study suggests that men with a history of violent behavior may have greater gray matter volume in certain brain areas, whereas men with a history of substance use disorders may have reduced gray matter volume in other brain areas….”

Agnostics and Big 5 personality traits – from the inductivist.

Brain imaging study of preschoolers with ADHD detects brain differences linked to symptoms“Smaller brain volumes associated with severity of ADHD symptoms”

When Is a Child’s Brain Ready for Maths? – @al fin.

bonus: Johann Hari: It’s not just Dominique Strauss-Kahn. The IMF itself should be on trial << read this.

Still Red in Tooth and Claw

Tortoise and Hare, in a Laboratory Flask – on evolvability

First sex linked to better body image in men, not women“On average, college-age males become more satisfied with their appearance after first intercourse, whereas college-age females become slightly less satisfied.” (heh.)

Better Genes, Better Brains – from al fin

Study Undercuts View of College as a Place of Same-Sex Experimentation – via half sigma

On the Left Hand, There Are No Easy Answers

Girls more virginal than they’ve been in at least a generation – from the audacious

Skin color and the discrimination paradigm – from evo and proud via diversity is chaos

In a Brazilian Town, a Rogue Gene and a Boom in Twins

Darwinian Lessons from the Earthquake in Japan“[H]uman morality is not a dictate of pure reason, because reason without desire or emotion does not move us to action.”

Low-serotonin mice less choosy about sex of partners

Artifacts in Texas predate Clovis culture by 2,500 years, new study shows – neato! see also: Paleo-Indians settled North America earlier than thought, study suggests

Does belief in free will lead to action?

Why Some Kids Are Harmed by Mother’s Alcohol, But Others Aren’t“Exposure to alcohol in the womb doesn’t affect all fetuses equally.”

DNA and the New Identity Politics

The Brain: The Trouble With Teens“Fast driving, drugs, and unsafe sex: The risk-loving behavior of adolescents may result from a neurological gap in the developing brain.”

bonus – Caution: Middle East under construction

(note: comments do not require an email.)