linkfest – 06/12/11

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.

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linkfest – 05/08/11

The Reason We Reason << read this!

Ug! Neanderthals were mostly right-handed … and may have had a proper language too

Better brain wiring linked to family genes – via roissy

The eternal infant“[H]umans are different. We never grow up. As adults, we retain this infant-like mental plasticity…. Geneticists are now a step closer to understanding this evolutionary change. A team led by David Kingsley of Stanford has shown that ancestral humans lost a key piece of DNA that switches on GADD45G, a gene that stifles growth of brain tissue.” @evo and proud via diversity is chaos.

Who knows you best? Not you, say psychologists

Combination of ADHD and poor emotional control runs in families. see also: Stress in pregnancy ‘makes child unruly’: Mother’s anxiety can raise baby’s risk of ADHD

More than 20 percent of atheist scientists are spiritual – spiritual atheists. wait. what?

Female-to-male transsexual people have more autistic traits“Simon Baron-Cohen interpreted the results as follows: ‘Girls with a higher than average number level of autistic traits tend to have male-typical interests, showing a preference for systems over emotions. They prefer not to socialise with typical girls because they have different interests, and because typical girls on average have more advanced social skills. Both of these factors may lead girls with a higher number of autistic traits to socialize with boys, to believe they have a boy’s mind in a girl’s body, and to attribute their unhappiness to being a girl.'”

Hearts Beat as One in a Daring Ritual – cool!

Does Revenge Serve an Evolutionary Purpose?

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why east asians aren’t more creative

one of the questions always floating around in the hbd-o-sphere is why aren’t those really clever east asians more creative.

well, kiwiguy over @dennis’ commented the other day:

“Cochran & Harpending discuss a gene associated with ADD & impulsive behaviour in ‘The 10,000 Year Explosion‘:

“‘The polymorphism is found at varying but significant levels in many parts of the world, but is almost entirely absent from East Asia…

“‘The Japanese say that the nail that sticks out is hammered down, but in China it may have been pulled out and thrown away.

Selection for submission to authority sounds unnervingly like domestication…’ (page 112)”

(*hbdchick reaches for her copy of the book*)

yup. kiwiguy is right. says here right on page 112:

“We know of a gene that may play a part in this story: the 7R (for 7-repeat) allele of the DRD4 (dopamine receptor D4) gene. It is associated with Attention-Deficit/Hyperactivity Disorder (ADHD), a behavioral syndrome best characterized by actions that annoy elementary school teachers: restless-impulsive behavior, inattention, distractibility, and the like.

“The polymorphism is found at varying but significant levels in many parts of the world, but is almost totally absent from East Asia. Interestingly, alleles derived from the 7R allele are fairly common in China, even though the 7R alleles themselves are extremely rare there. It is possible that individuals bearing these alleles were selected against because of cultural patterns in China. The Japanese say that the nail that sticks out is hammered down, but in China it may have been pulled out and thrown away.”

now here’s an article that i happened to link to in this past sunday’s linkfest:

Creativity is an upside to ADHD

“Parents who believe that attention deficit hyperactivity disorder makes their kids more creative got a little more scientific support recently.

“A new study in the Journal of Personality and Individual Differences found adults with ADHD enjoyed more creative achievement than those who didn’t have the disorder.

“‘For the same reason that ADHD might create problems, like distraction, it can also allow an openness to new ideas,’ says Holly White, assistant professor of cognitive psychology at Eckerd College in St. Petersburg, Florida and co-author of the paper. ‘Not being completely focused on a task lets the mind make associations that might not have happened otherwise….'”

so, there you go! low frequencies of adhd genes = low creativity. solved that for ya. ENGLISH BLOKE solved that for ya first. (~_^) ur welcome!

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linkfest – 03/13/11

Giftedness Linked to Prenatal Exposure of Higher Levels of Testosterone

Creativity is an upside to ADHD“For the same reason that ADHD might create problems, like distraction, it can also allow an openness to new ideas.”

Cold War, (relatively) warm feelings – from the a epigone.

Do genes make people evil?“[T]wo recent findings provide strong evidence that evil behavior—mass murder, armed robbery, and perhaps even newspaper theft—might be caused by the right set of genes interacting with the wrong environment.” [subscription req.]

Natural homophobes? Evolutionary psychology and antigay attitudes

Thrill-seeking females work hard for their next fix“[W]omen become addicted to cocaine more easily than men and find it harder to give up.”

Anthropologists Link Human Uniqueness to Hunter-Gatherer Group Structure

Epidemiology: Study of a lifetime“In 1946, scientists started tracking thousands of British children born during one cold March week. On their 65th birthday, the study members find themselves more scientifically valuable than ever before.”

Aging rates, gender gap in mortality similar across all primates

psychobabble

wtf is this guy talking about?:

“Why genes are leftwing”

“When the map of the human genome was presented to the world in 2001, psychiatrists had high hopes for it. Itemising all our genes would surely provide molecular evidence that the main cause of mental illness was genetic – something psychiatrists had long believed. Drug companies were wetting their lips at the prospect of massive profits from unique potions for every idiosyncrasy.

“But a decade later, unnoticed by the media, the human genome project has not delivered what the psychiatrists hoped: we now know that genes play little part in why one sibling, social class or ethnic group is more likely to suffer mental health problems than another….

“…Genes hardly explained at all why some children have ADHD and not others.

“That was illustrated recently in a heavily publicised study by Anita Thapar, of Cardiff University. Although she claimed to have proved that ADHD is a “genetic disease”, if anything, she proved the opposite. Only 16% of the children with ADHD in her study had the pattern of genes that she claimed causes the illness. Taken at face value, her study proved that non-genetic factors cause it in 8 out of 10 children….”

james is (was?) a clinical child psychologist so he oughta know that adhd is NOT one thing. so, why would he presume that, if there is something genetic to these conditionsss, that it would be just ONE gene or ONE pattern of genes involved??

just because there’s not one single gene or one pattern of genes causing adhd doesn’t mean genes are not involved. and, just ’cause genes are involved does not mean that the environment is not!

nature AND nuture, already! duh.

lame, mr. james. very lame. (guess we wouldn’t want book sales to drop, would we?)

not hbd chick

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