linkfest – 07/15/12

How Much Hard Evidence Do You Need?“[T]hree dopamine genes … examined, the dopamine transporter gene (DAT1), the dopamine D2 receptor gene (DRD2), and the dopamine D4 receptor gene (DRD4), had small but reliable effects on educational attainment, such that those with a higher ‘dopamine index’ tended to attain less education…. But what’s much more interesting is that they found significant differences in the prevalence of the alleles of theses genes between the White and the Black subjects, with Blacks having tending to have higher dopamine indices.” – from jayman (at his new location!).

Earliest Americans Arrived in Waves, DNA Study Finds – via steve sailer.

Spearheads and DNA Point to a Second Founding Society in North America“Clovis people, long known for their graceful, fluted projectile points, were not alone in the New World.” – original research article. see also: Paisley Caves yield 13,000-year old Western Stemmed points, more human DNA.

New Au. sediba fossils discovered in rock“Bones to be unearthed ‘live’ online, in a laboratory studio in real time.”

Fascinatin’ rhythm“[A] Neanderthal-derived segment that overlaps CLOCK, a key gene in regulating circadian rhythms. That segment has a frequency of 85% in Europeans.” – from greg cochran.

Pathological Altruism – jared taylor reviews Pathological Altruism.

Bad News for Big Brains“Humans and other creatures with large brains relative to their body size tend to have smaller guts and possibly fewer offspring. Scientists have debated for decades whether the two phenomena are related. Now a team of researchers says that they are—and that big brains do indeed make us smart.”

IQ and fertility cross-nationally – bad news from the inductivist.

The IQ’s Of Russian Politicians – anatoly guesstimates.

Intro to kinship and inbreeding coefficients“Fair warning: this is the most mathematical post I have ever done. If you hate math or are not good at it, don’t bother reading this post.” – from secular blood. also: On inbreeding coefficients and On kinship coefficients.

Women’s body movements are a potential cue to ovulation – something in the way she moves….

Natural Alzheimer’s Protection“Researchers identify a gene variant that reduces risk of Alzheimer’s disease.”

Q: Why Do We Wear Pants? A: Horses

bonus: Fruitflies evolve number sense

bonus bonus: Falling Dominoes – in china.

bonus bonus bonus: Feeling Snappy? Measuring Personality in Hermit Crabs

bonus bonus bonus bonus: Papua New Guinea charges 29 alleged cannibals

(note: comments do not require an email. lazy sunday.)

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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.

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