linkfest – 10/11/15

Ancient Ethiopian genome reveals extensive Eurasian admixture throughout the African continent“Here, we present a 12.5x coverage ancient genome of an Ethiopian male (‘Mota’) who lived approximately 4,500 years ago. We use this genome to demonstrate that the Eurasian backflow into Africa came from a population closely related to Early Neolithic farmers, who had colonized Europe 4,000 years earlier. The extent of this backflow was much greater than previously reported, reaching all the way to Central, West and Southern Africa, affecting even populations such as Yoruba and Mbuti, previously thought to be relatively unadmixed, who harbor 6-7% Eurasian ancestry.” – h/t john hawks! who tweeted: “First ancient DNA from Ethiopia shows that today’s sub-Saharan Africans are at least 0.2-0.7% Neanderthal ancestry!” – see also: First Ancient African Genome Reveals Vast Eurasian Migration“The man’s genome is, unsurprisingly, more closely related to present-day Ethiopian highlanders known as the Ari than to any other population the team examined, suggesting a clear line of descent for the Ari from ancient human populations living in the area. But further genetic studies show that the Ari also descend from people that lived outside Africa, which chimes with a previous study that discovered a ‘backflow’ of humans into Africa from Eurasia around 3,000 years ago.”

Eight thousand years of natural selection in Europe“The arrival of farming in Europe around 8,500 years ago necessitated adaptation to new environments, pathogens, diets, and social organizations…. We identify genome-wide significant signatures of selection at loci associated with diet, pigmentation and immunity, and two independent episodes of selection on height…. These results suggest that the modern South-North gradient in height across Europe is due to both increased steppe ancestry in northern populations, and selection for decreased height in Early Neolithic migrants to southern Europe. “

The Hybrid Origin of “Modern” Humans“Recent genomic research has shown that hybridization between substantially diverged lineages is the rule, not the exception, in human evolution. However, the importance of hybridization in shaping the genotype and phenotype of Homo sapiens remains debated. Here we argue that current evidence for hybridization in human evolution suggests not only that it was important, but that it was an essential creative force in the emergence of our variable, adaptable species.”

Neanderthal ‘flower children’ burials theory debunked“New research casts doubt on the idea that Neanderthals buried their dead covered in flowers.”

Intelligence in youth and health at age 50“Higher intelligence in youth is linked with better physical health at age 50.” – h/t andrew sabisky!

Chorionicity and Heritability Estimates from Twin Studies: The Prenatal Environment of Twins and Their Resemblance Across a Large Number of Traits“There are three types of monozygotic (MZ) twins. MZ twins can either share one chorion and one amnion, each twin can have its own amnion, or MZ twins can—like dizygotic twins—each have their own chorion and amnion. Sharing the same chorion may create a more similar/dissimilar prenatal environment and bias heritability estimates…. We conclude that the influence on the MZ twin correlation of the intra-uterine prenatal environment, as measured by sharing a chorion type, is small and limited to a few phenotypes.”

Genetic transmission of reading ability – h/t steve stewart williams! who tweeted: “If you want your kids to read, your best bet is to have kids with a reader.”

It All Began at Ararat, and Esau’s Revenge“Ancient DNA in Europe strongly indicates massive replacement [of hunter-gatherers by agriculturalists]. But, there is also suggestion of admixture with the local substrate. And, unlike the stylized model of Bellwood, it seems that there were multiple migrations after the initial pulse which reshaped the genetic and cultural landscape of human societies in the wake of agriculture.” – from razib.

Closing the Black-White IQ Gap Debate, Part I – from chanda chisala. and a response from peter frost: No, blacks aren’t all alike. Who said they were? – and previously on this blog: there’s more to human biodiversity than just racial differences.

The Association of Cognitive Ability with Right-wing Ideological Attitudes and Prejudice: A Meta-analytic Review“The present meta-analyses revealed an average effect size of r = −.20 [95% confidence interval (95% CI) [−0.23, −0.17]; based on 67 studies, N = 84 017] for the relationship between cognitive ability and right-wing ideological attitudes and an average effect size of r = −.19 (95% CI [−0.23, −0.16]; based on 23 studies, N = 27 011) for the relationship between cognitive ability and prejudice.”

[male] Chimps like boys toys too“If you want to know why young boys play with toy guns, you could do worse than consider why young male chimpanzees play with leaves and stones.” – h/t darren burke! who tweeted: “Western social constructivism is so insidious and widespread it is even affecting wild chimpanzees now!” – (~_^)

Ravens cooperate, but not with just anyone“Ravens detect cheaters in cooperation.”

Understanding the Cognitive and Genetic Underpinnings of Procrastination: Evidence for Shared Genetic Influences With Goal Management and Executive Function Abilities – procrastination (at least) 28% heritable. will have to read original paper. tomorrow, maybe. (~_^)

Personality Traits Increasingly Important for Male Fertility: Evidence from Norway“[P]ersonality relates to men’s and women’s fertility differently; conscientiousness decreases female fertility, openness decreases male fertility and extraversion raises the fertility of both sexes. Neuroticism depresses fertility for men, but only for those born after 1956.”

Host genetic variation impacts microbiome composition across human body sites“Our results highlight the role of host genetic variation in shaping the composition of the human microbiome, and provide a starting point toward understanding the complex interaction between human genetics and the microbiome in the context of human evolution and disease.”

DNA At the Fringes: Twins, Chimerism, and Synthetic DNA – h/t genetics and society! who tweeted: “Chimeras could undermine DNA forensics & use of DNAtesting as conclusive proof of crime & family.”

Ethnic differences in the association between depression and chronic pain: cross sectional results from UK Biobank [pdf] – h/t don lyall!

Emotion, rationality, and decision-making: how to link affective and social neuroscience with social theory

Women and men react differently to infidelity“While men are most jealous of sexual infidelity, women are most jealous of emotional infidelity.” – w.e.i.r.d. study. (n=1000).

‘Safe spaces’ exist because universities treat secular ideas as sacred“The most influential effect of this cultural and political imbalance is that academia has ignored the increasing evidence that human traits are heavily influenced by hereditary factors, most prominently in intelligence and sexual differences. This has a huge bearing on public policy, especially when so much of policy is involved in tackling inequality of various kinds. It would be like trying to reduce economic inequality while pretending that wealth cannot be inherited, because that’s offensive to people’s parents, and that all fortunes were the results of education, hard work or sheer luck.” – from ed west.

Relics of the Blank Slate, as Excavated at “Ethics” Magazine“There’s a reason that the Blank Slaters clung so bitterly to their absurd orthodoxy for so many years. If there is such a thing as human nature, then all the grandiose utopias they concocted for us over the years, from Communism on down, would vanish like so many mirages.” – from helian.

Anthropologist: “I’ve Never Been So Disgusted with My Own Data” – from steve sailer.

“Ethics” is advertising – david chapman on virtue signaling (trans: signalling. (~_^) ).

Two Fed economists tried to replicate some top economic studies — and the results are dreadful – from mike bird.

The shifting tide of American immigration – from colin woodard.

Missing piece of Gilgamesh Epic discovered

Pompeii Victims’ Bodies Revealed in [ct] Scans: Photos

Excavations at Mexican ruin site yields new details of Aztecs’ sacrifice of captured Spaniards“It was one of the worst defeats in one of history’s most dramatic conquests: Only a year after Hernan Cortes landed in Mexico, hundreds of people in a Spanish-led convey were captured, sacrificed and apparently eaten.”

bonus: Most worker ants are slackers“[N]ew research shows that many ants in a colony seem to specialize in doing nothing at all. To get a closer look at how these ants filled their time, researchers marked every member of five lab-based colonies with dots of colored paint. Over the course of 2 weeks, a high-definition camera recorded 5-minute segments of the ants in action six times a day, capturing their behavior (or lack thereof). Out of the ‘workers,’ 71.9% were inactive at least half the time, and 25.1% were never seen working. A small fraction of the ants, just 2.6%, were always active during observation, the researchers wrote last month in Behavioral Ecology and Sociobiology.”

bonus bonus: How to Dupe a Dung Beetle“A case of biological mimicry has been spotted in Ceratocaryum argenteum, a South African plant that tricks dung beetles into spreading its stinky seeds.”

bonus bonus bonus: Elephants: Large, Long-Living and Less Prone to Cancer“Dr. Schiffman and his colleagues found that elephants have evolved new copies of the p53 gene [“a gene that is crucial for preventing cancer”]. While humans have only one pair of p53 genes, the scientists identified 20 pairs in elephants.”

bonus bonus bonus bonus: DNA Sequenced for New Zealand’s First Dog – the kurī. woof!

bonus bonus bonus bonus bonus: Watch Drones Drop Thousands of Moths on Crops

bonus bonus bonus bonus bonus bonus: Honour, community and hierarchy in the feasts of the archery and crossbow guilds of Bruges, 1445–81

and the tweet of the week… (~_^)

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guess the population!

see if you can guess what population the people described below belong to! (^_^)

don’t cheat!! don’t google the text to find out. i’ll know if you do….

bonus points for guessing population X’s mating patterns. (~_^)

update: solution here in the comments. DON’T LOOK at the comments if you wanna have a guess! (^_^)
_____

from a governmental agency publication (1983):

“Although the group solidarity of [population X] is strong, individual achievement is highly valued. Members of the group are expected to exercise individual initiative in the pursuit of economic goals. Individual acquisition of economic resources including private property, money, and other remuneration is stressed. Other cultural characteristics of the group that have been invaluable to their entrepreneurial skills are discussed below….

[T]he social status of an individual in this ethnic group is not rigidly fixed; individuals — male or female — can improve their condition in life and are expected to do so. Commercial and business success is one of the most highly valued routes to prestige and status. [population X’s] women are also expected to achieve economic and comnercial success and there are few traditional limits placed on their economic participation….

“The traditional values of [population X] stress individual competition and overt displays of ‘getting ahead’. Individual [members of population X] are expected to compete and to surpass each other’s accomplishments. The emphasis on competition is not limited to economic activities, but is a feature of personal relationships as well: within families, children are expected to compete with their siblings; sons and daughters are encouraged to surpass the achievements of their parents….

“[P]oorer relatives are not expected or allowed to lay claim to or live off the riches of wealthier family members….

“A final feature of traditional society which must be noted is the system of succession and inheritance. Of all the elements characteristic of [population X’s] social organization, this feature has been fundamental and has had far-reaching implications for the rate and pace of [population X’s] participation in economic growth, development, and change. Succession and inheritance rules are determined by the principle of patrilineal descent. According to custom, the eldest son is the probable heir, but a father may choose any one of his sons to succeed him. An heir takes his dead father’s name and inherits any titles held by the latter, including the right to membership in any societies to which he belonged…. The rights in land held by the deceased were conferred upon the heir subject to the approval of the chief, and, in the event of financial inheritance, the heir was not obliged to share this with other family members. The ramifications of this are significant. First, dispossessed family members were not automatically entitled to live off the wealth of the heir. Siblings who did not share in the inheritance were, therefore, strongly encouraged to make it on their own through individual initiative and by assuming responsibility for earning their livelihood….

A notable feature of the group is the complementarity between individualism and collective unity. Individuals are expected to make their own way in the world while retaining a strong ethnic identity and group association. This interact is one of the factors accounting for their economic success. Each individual, for example, is expected to contribute as much to the group as he receives in return. Thus, cooperation is essential. The group is perceived of as an interdependent system based on the strength of individual links….

“A principal [population X] belief is that individuals are, in the final analysis, responsible for their own fate. One makes one’s way in society on the basis of individual qualities. Status distinctions and rank are not rigidly fixed and there is always the possibility of advancement.”
_____

a little more on inheritance practices in population X from a volume published by the university of california press (1976):

“[A]mong [population X], familial segmentation results from the choices that a testator can make with regard to this heirs: an individual who is not chosen as an heir is entitled to move into a new territory, and to create a new lineage: in this case, ascription is more likely to interact with achievement in the ultimate fate of an individual.”
_____

and on voluntary associations from another volume published by the university of california press (1989):

“The original function of these societies was to administer initiation rites, but in societies with a more complex economy and polity, both male and female associations grew in importance by assuming a plurality of administrative and commercial functions as well, such as tax collection, price control in markets, maintenance of public order, and organization of collective work. The [X] societies of [population X’s] men and women provide good examples of such traditional associations. The women’s [associations] are presided over by the mother of the…chief — there are over a hundred such chiefdoms in [population X’s] territory — and its members help each other in agricultural work. The [associations] used to meet on a weekly basis to organize such work. In addition to associations that fit into the political structure of [population X’s] society, there are also many autonomous associations based on neighborhood. Aside from ritual functions (such as divination and faith healing) they also act as savings groups and associations for mutual assistance. More recently, [population X’s] associations…have been adapted to the needs of urban living and have led to a proliferation of voluntary membership clubs that provide mutual aid, companionship for immigrants, and entertainment. The savings groups are maintained by members paying in fixed amounts at weekly meetings, taking turns in receiving the entire sum. Membership is not restricted to a single saving association and the [members of population X] tend to join them as soon as they earn money.”
_____

from a volume published by routledge (2013):

Known for their frugality and successful entrepreneurship, [population X] historically have played dominant social roles as businessmen.”
_____

finally, from yet another university of california press volume (2002):

“[population X], making up roughly 25 percent of the [nation’s] population, have higher rates of fertility than their average [national] compatriots…. [population X] also exhibit lower rates of infertility than all other ethnic groups in [the nation].”

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linkfest – 09/08/13

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

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

Scientists to sequence genomes of hundreds of newborns

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

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

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

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

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

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

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

Arabs and Liberal Democracy: A Primer – @thosewhocansee.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

(note: comments do not require an email. wtf is this weird web-tower thing?)

linkfest – 03/10/13

Low-hanging fruit?“We need to go beyond intelligence and look at genetic differences that may underlie variation in personality traits, regulation of emotions, time orientation, and so forth. There is more to being human than just intelligence. – yes!! (^_^) – from peter frost.

this is kinda old (from jan) but i just came across it: Variants at serotonin transporter and 2A receptor genes predict cooperative behavior differentially according to presence of punishment“We show that variants at the serotonin transporter gene (SLC6A4) and serotonin 2A receptor gene (HTR2A) predict contributions to the public good in economic games, dependent upon whether contribution behavior can be punished.”

Genetic Influences on the Overlap Between Low IQ and Antisocial Behavior in Young Children“Genetic influences common to both phenotypes explained 100% of the low IQ–antisocial behavior relation in boys.” – via race/history/evolution notes.

Monkeys Stay Away from Mean People“Capuchin monkeys show biases against humans who deny help to others.”

Genetic study of house dust mites demonstrates reversible evolution

Do species exist? – from steve sailer.

Fungus, Get Off My Lawn!“Virginia wildrye, common on U.S. prairies and rangelands, often plays host to a fungus that helps this grass grow. But the plant pays a price. Researchers have discovered that infected plants produce less pollen than their noninfected counterparts. Instead, the fungus causes the rye grass to make extra seeds, which transmit the fungus to the next generation and new locations. This is the first time a fungus has proven capable of manipulating plant reproduction.” – manipulator!

E. O. Wilson vs. Jerry Coyne: The Group Selection Wars Continue – from helian.

Pathogens: Cause or Effect of Social Variation?

Can People’s Personalities Change?“[P]ersonality was the strongest predictor of satisfaction with life. This is well-established and helps explain why some people have everything and are never satisfied and some people have next-to-nothing and seem quite happy with life. It’s not just what you have that makes you satisfied (or not), it’s how you think about it. And those habits of thought are heavily influenced by personality.”

Difficult Thoughts“It’s depressing to see how irrational we are so much of the time, but there it is.” – from malcolm pollack.

The Shape of History“Ian Morris, historian on a grand scale.”

bonus: Mystery bug found in Antarctica’s Lake Vostok“There is something alive in Lake Vostok, deep beneath the East Antarctic ice sheet, and we don’t know what it is. Water samples from the lake contain a bacterium that does not seem to belong to any known bacterial groups….”

bonus bonus: The Dark Enlightenment and the Eco Fringe – paleo retiree goes all hippie on us. (~_^) (i’ll confess right now to being a tree hugger myself.)

bonus bonus bonus: foseti’s drunken rant – i love drunken rants! (~_^) (this one actually makes sense!)

bonus bonus bonus bonus: Only the toughest would survive on Tatooine worlds – h/t hbd bibliography!

bonus bonus bonus bonus bonus: Butt munchers“[S]ea cucumbers can eat through their anuses.”

(note: comments do not require an email. sea cucumber – i don’t know if that’s the front end or the back….)

linkfest – 07/08/12

Genes May Play Role in Educational Achievement, Study Finds“Researchers have identified genetic markers that may influence whether a person finishes high school and goes on to college, according to a national longitudinal study of thousands of young Americans…. The three genes identified in the study – DAT1, DRD2 and DRD4 – have been linked to behaviors such as attention regulation, motivation, violence, cognitive skills and intelligence, according to the study.”

Racial bias colours visual perception“Prejudiced people slowest to recognize faces from other races.” – or maybe people who are slowest to recognize faces from other races are the most “prejudiced”?

Cross-national IQ, inequality, and homicide – from the inductivist.

Research shows endowment effect in chimpanzees can be turned on and off“‘These results strongly support the idea that the endowment effect reflects the deep influence of evolutionary processes – notably natural selection – on psychological predispositions that affect how brains ascribe value to objects.'”

A scientific study reveals that individuals cooperate according to their emotional state and their prior experiences“[P]eople do not act thinking in their own reward, as had been previously believed, but rather individuals are more influenced by their own mood at the time and by the number of individuals with whom they have cooperated before.”

Baby makers scorn porn? – from the awesome epigone.

Chronic pain is determined by emotions, scientists believe“The more emotionally the brain reacted to the initial injury, the more likely it was that pain will persist after the injury has healed, he said. Prof Apakarian added: ‘It may be that these sections of the brain are more excited to begin with in certain individuals, or there may be genetic and environmental influences that predispose these brain regions to interact at an excitable level.'”

‘Cat ladies’ more likely to commit suicide, scientists claim“Researchers found women infected with the Toxoplasma gondii (T. gondii) parasite, which is spread through contact with cat faeces or eating undercooked meat or unwashed vegetables, are at increased risk of attempting suicide.”

Autism, schizophrenia and bipolar disorder may share common underlying factors, study suggests“New research led by a medical geneticist at the University of North Carolina School of Medicine points to an increased risk of autism spectrum disorders (ASDs) among individuals whose parents or siblings have been diagnosed with schizophrenia or bipolar disorder.”

O Brother, Who Art Thou? – review of Born Together – Reared Apart: The Landmark Minnesota Twin Study.

23andMe Contributes to Genetic Discoveries Related to Breast Size and Breast Cancer“23andMe … has identified seven single-nucleotide polymorphisms (SNPs) significantly associated with breast size, including three SNPs also correlated with breast cancer in a genome-wide association study (GWAS) now published online in BMC Medical Genetics. These findings make the first concrete genetic link between breast size and breast cancer risks.” – they looked at data from women of european ancestry.

Researchers Find a Brain Center for Social Choices“Poker-playing subjects seen weighing whether to bluff.”

bonus: the higgs! (maybe/probably)

bonus bonus: The ‘appetite-suppressing’ effect of proteins explained

bonus bonus bonus: Plants that feed on animals underground discovered“Three species of carnivorous plant that feed on worms underground have been discovered in the Brazilian savannah.”

bonus bonus bonus bonus: Women ‘deliberately post ugly photos of friends online’ – heh.

bonus bonus bonus bonus bonus: Dogs May Mourn as Deeply as Humans Do – dogs are people, too.

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linkfest – 06/10/12

Consanguinity and Corruption“Computing simple, unweighted averages for each country for which studies and surveys have been conducted and subsequently recorded on consang.net and then comparing them to Transparency International’s 2011 Corruptions Perception Index yields a correlation of .44 (p = 0).” – from the awesome epigone! see also steve sailer.

Does cooperation require both reciprocity and alike neighbours? – the answer is yes: “The researchers conclude that human societies can best achieve high levels of cooperative behaviour if their individuals interact repeatedly, and if populations exhibit at least a minor degree of structure.” – in other words, if the members of a society are related to some degree.

Re-Examining the “Out of Africa” Theory and the Origin of Europeoids (Caucasoids) in Light of DNA Genealogyopen access [pdf].

An Asian Origin for Human Ancestors?“Researchers agree that our immediate ancestors, the upright walking apes, arose in Africa. But the discovery of a new primate that lived about 37 million years ago in the ancient swamplands of Myanmar bolsters the idea that the deep primate family tree that gave rise to humans is rooted in Asia. If true, the discovery suggests that the ancestors of all monkeys, apes, and humans—known as the anthropoids—arose in Asia and made the arduous journey to the island continent of Africa almost 40 million years ago.”

Exercise benefits black girls less than whites, study shows“Physical activity seems a nearly sure way to prevent obesity in white adolescent girls, but does not have the same effect on African American girls, researchers say…. The study … falls in line with research that finds black women oxidize fat more slowly in response to exercise, and that their resting metabolic rates are lower than those of white women.”

[White] Americans’ heads have been growing, scientists say“Over the last 150 years or so, it appears that skulls got narrower from side to side by about 5 to 7 millimeters, and higher from top to bottom by an average of nearly 10 millimeters, Jantz said. And the overall size of the head has, on average, increased by an amount equivalent to the size of a tennis ball, he said.”

Menstrual huts protect Dogon men from cuckoldry“Women who practise the traditional Dogon religion, unlike those who are Muslim or Christian, spend five days a month around the time of menstruation in a highly visible ‘menstrual hut’. Strassmann tested paternity in 1700 Dogon father and son pairs and found that those who practised the traditional religion were four times less likely to be raising someone else’s son than those who practised Christianity.”

Lady Liaisons: Does Cheating Give Females an Evolutionary Advantage?“‘This is one of the most careful and most robust studies to explore whether polyandry is adaptive in females,’ says Tommaso Pizzari, a University of Oxford biologist who was not involved in the research. ‘The answer is: not really.'” – at least not in canadian song sparrows.

bonus: Plants may be able to ‘hear’ others

bonus bonus: Parasitic plants ‘steal’ genes from their hosts

bonus bonus bonus: Skeletons treated for vampirism found in Bulgaria – vampires!

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