Chapter 1. Biological Psychology: Scope and Outlook

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By David Z. Hambrick and Christopher Chabris The College Board—the standardized testing behemoth that develops and administers the SAT and other tests—has redesigned its flagship product again. Beginning in spring 2016, the writing section will be optional, the reading section will no longer test “obscure” vocabulary words, and the math section will put more emphasis on solving problems with real-world relevance. Overall, as the College Board explains on its website, “The redesigned SAT will more closely reflect the real work of college and career, where a flexible command of evidence—whether found in text or graphic [sic]—is more important than ever.” A number of pressures may be behind this redesign. Perhaps it’s competition from the ACT, or fear that unless the SAT is made to seem more relevant, more colleges will go the way of Wake Forest, Brandeis, and Sarah Lawrence and join the “test optional admissions movement,” which already boasts several hundred members. Or maybe it’s the wave of bad press that standardized testing, in general, has received over the past few years. Critics of standardized testing are grabbing this opportunity to take their best shot at the SAT. They make two main arguments. The first is simply that a person’s SAT score is essentially meaningless—that it says nothing about whether that person will go on to succeed in college. Leon Botstein, president of Bard College and longtime standardized testing critic, wrote in Time that the SAT “needs to be abandoned and replaced,” © 2014 The Slate Group LLC.

Keyword: Intelligence
Link ID: 19508 - Posted: 04.19.2014

James Gorman Crows and their relatives, like jays and rooks, are definitely in the gifted class when it comes to the kinds of cognitive puzzles that scientists cook up. They recognize human faces. They make tools to suit a given problem. Sometimes they seem, as humans like to say, almost human. But the last common ancestor of humans and crows lived perhaps 300 million years ago, and was almost certainly no intellectual giant. So the higher levels of crow and primate intelligence evolved on separate tracks, but somehow reached some of the same destinations. And scientists are now asking what crows can’t do, as one way to understand how they learn and how their intelligence works. One very useful tool for this research comes from an ancient Greek (or perhaps Ethiopian), the fabulist known as Aesop. One of his stories is about a thirsty crow that drops pebbles into a pitcher to raise the level of water high enough that it can get a drink. Researchers have modified this task by adding a floating morsel of food to a tube with water and seeing which creatures solve the problem of using stones to raise the water enough to get the food. It can be used for a variety of species because it’s new to all of them. “No animal has a natural predisposition to drop stones to change water levels,” said Sarah Jelbert, a Ph.D. student at Auckland University in New Zealand, who works with crows. But in the latest experiment to test the crows, Ms. Jelbert, working with Alex Taylor and Russell Gray of Auckland and Lucy Cheke and Nicola Clayton of the University of Cambridge in England, found some clear limitations to what the crows can learn. And those limitations provide some hints to how they think. © 2014 The New York Times Company

Keyword: Intelligence; Aggression
Link ID: 19476 - Posted: 04.12.2014

For years, some biomedical researchers have worried that a push for more bench-to-bedside studies has meant less support for basic research. Now, the chief of one of the National Institutes of Health’s (NIH’s) largest institutes has added her voice—and hard data—to the discussion. Story Landis describes what she calls a “sharp decrease” in basic research at her institute, a trend she finds worrisome. In a blog post last week, Landis, director of the $1.6 billion National Institute of Neurological Disorders and Stroke (NINDS), says her staff started out asking why, in the mid-2000s, NINDS funding declined for R01s, the investigator-initiated grants that are the mainstay of most labs. After examining the aims and abstracts of grants funded between 1997 and 2012, her staff found that the portion of NINDS competing grant funding that went to basic research has declined (from 87% to 71%) while applied research rose (from 13% to 29%). To dig deeper, the staffers divided the grants into four categories—basic/basic; basic/disease-focused; applied/translational; and applied/clinical. Here, the decline in basic/basic research was “striking”: It fell from 52% to 27% of new and competing grants, while basic/disease-focused has been rising (see graph). The same trend emerged when the analysts looked only at investigator-initiated grants, which are proposals based on a researcher’s own ideas, not a solicitation by NINDS for proposals in a specific area. The shift could reflect changes in science and “a natural progression of the field,” Landis writes. Or it could mean researchers “falsely believe” that NINDS is not interested in basic studies and they have a better shot at being funded if they propose disease-focused or applied studies. The tight NIH budget and new programs focused on translational research could be fostering this belief, she writes. When her staff compared applications submitted in 2008 and 2011, they found support for a shift to disease-focused proposals: There was a “striking” 21% decrease in the amount of funding requested for basic studies, even though those grants had a better chance of being funded. © 2014 American Association for the Advancement of Science.

Keyword: Movement Disorders
Link ID: 19440 - Posted: 04.02.2014

by Aviva Rutkin Eureka! Like Archimedes in his bath, crows know how to displace water, showing that Aesop's fable The Crow and the Pitcher isn't purely fictional. To see if New Caledonian crows could handle some of the basic principles of volume displacement, Sarah Jelbert at the University of Auckland in New Zealand and her colleagues placed scraps of meat just out of a crow's reach, floating in a series of tubes that were part-filled with water. Objects potentially useful for bringing up the water level, like stones or heavy rubber erasers, were left nearby. The crows successfully figured out that heavy and solid objects would help them get a treat faster. They also preferred to drop objects in tubes where they could access a reward more easily, picking out tubes with higher water levels and choosing tubes of water over sand-filled ones. However, the crows failed at more challenging tasks that required an understanding of the effect of tube width or the ability to infer a hidden connection between two linked tubes. The crows displayed reasoning skills equivalent to an average 5 to 7 year old human child, the researchers claim. Previously, Eurasian jays have shown some understanding of water displacement, as have chimpanzees and orang-utans, but using similar experiments could assess and compare their skill levels. "Any animal capable of picking up stones could potentially participate," write the researchers. © Copyright Reed Business Information Ltd.

Keyword: Intelligence; Aggression
Link ID: 19413 - Posted: 03.27.2014

By Dominic Basulto In last weekend’s Wall Street Journal, two leading brain researchers conjectured that as a result of rapid breakthroughs in fields such as molecular biology and neuroscience, one day “brain implants” will be just about as common as getting a bit of plastic surgery is today. In short, today’s tummy tucks are tomorrow’s brain tucks. Similar to what you’d expect from watching science fiction films such as “The Matrix,” these brain implants would enable you to learn foreign languages effortlessly, upgrade your memory capabilities, and, yes, help you to know Kung Fu. Vinton Cerf argues that today’s Internet (think Google) is already a form of cognitive implant, helping us to learn the answer to just about anything within seconds. If computing power continues to increase at the same rate as it has for the past 50 years, it is likely that a single computer will have the computing capacity of a human brain by 2023. By 2045, a single computer could have the processing capability of all human brains put together. Just think what you’d be able to use Google to do then. You wouldn’t even need to type in a search query, your brain would already know the answer. Of course, the ability to create these brain implants raises a number of philosophical, ethical and moral questions. If you’re a young student having a tough time in a boring class, why not just buy a brain module that simulates the often repetitive nature of learning? If you’re a parent of a child looking to get into a top university, why not buy a brain implant as a way to gain an advantage over children from less privileged backgrounds, especially when it’s SAT time? Instead of the digital divide, we may be talking about the cognitive divide at some point in the next two decades. Some parents would be able to afford a 99 percent percentile brain for their children, while others wouldn’t. © 1996-2014 The Washington Post

Keyword: Robotics
Link ID: 19391 - Posted: 03.21.2014

Animal rights activists have dramatically shifted their tactics over the last decade, targeting individual researchers and the businesses that support them, instead of going after their universities. That’s the biggest revelation to come out of a report released today by the Federation of American Societies for Experimental Biology (FASEB), the largest coalition of biomedical research associations in the United States. The purpose of the report—The Threat of Extremism to Medical Research: Best Practices to Mitigate Risk through Preparation and Communication—is to provide guidance to scientists and institutions around the world in dealing with animal rights extremists. That includes individuals and groups that damage laboratories, send threatening e-mails, and even desecrate the graves of researchers’ relatives. In 2004, for example, Animal Liberation Front activists broke into psychology laboratories at the University of Iowa, where they smashed equipment, spray-painted walls, and removed hundreds of animals, causing more than $400,000 in damage. In 2009, extremists set fire to the car of a University of California, Los Angeles, neuroscientist who worked on rats and monkeys. And other researchers say activists have shown up at their homes in the middle of the night, threatening their families and children. “We wanted to create an international document to get people thinking about the potential of animal extremism,” says Michael Conn, a co-chair of the committee that created the report and the senior vice president for research at the Texas Tech University Health Sciences Center in Lubbock. “These activities can happen to anybody—no one is immune.” © 2014 American Association for the Advancement of Science

Keyword: Animal Rights
Link ID: 19355 - Posted: 03.13.2014

Penis envy. Repression. Libido. Ego. Few have left a legacy as enduring and pervasive as Sigmund Freud. Despite being dismissed long ago as pseudoscientific, Freudian concepts such as these not only permeate many aspects of popular culture, but also had an overarching influence on, and played an important role in the development of, modern psychology, leading Time magazine to name him as one of the most important thinkers of the 20th century. Before his rise to fame as the founding father of psychoanalysis, however, Freud trained and worked as a neurologist. He carried out pioneering neurobiological research, which was cited by Santiago Ramóny Cajal, the father of modern neuroscience, and helped to establish neuroscience as a discipline. The eldest of eight children, Freud was born on 6 May, 1856, in the Moravian town of Příbor, in what is now the Czech Republic. Four years later, Freud's father Jakob, a wool merchant, moved the family to Austria in search of new business opportunities. Freud subsequently entered the university there, aged just 17, to study medicine and, in the second year of his degree, became preoccupied with scientific research. His early work was a harbinger of things to come – it focused on the sexual organs of the eel. The work was, by all accounts, satisfactory, but Freud was disappointed with his results and, perhaps dismayed by the prospect of dissecting more eels, moved to Ernst Brücke's laboratory in 1877. There, he switched to studying the biology of nervous tissue, an endeavour that would last for 10 years. © 2014 Guardian News and Media Limited

Keyword: Miscellaneous
Link ID: 19350 - Posted: 03.12.2014

If you ever feel like your emotions are getting the best of you, you may want to try dimming the lights. According to researchers at the University of Toronto Scarborough, bright light can make us more emotional — for better or for worse — making us experience both positive and negative feelings more intensely. The findings seem to contradict commonly held notions that people feel happier and more optimistic on bright, sunny days and gloomier on dark, cloudy days. In fact, the idea for the study was spurred by findings that suicide rates peak in the late spring and summer, when sunshine is most abundant. “I was very surprised by this,” study author Alison Jing Xu told CBC News. Xu is an assistant professor of management at UTSC and the Rotman School of Management. “Normally I would say if brighter days generally increase people’s affect, then suicide rates should peak in winter — but actually it does not,” she said. Xu, along with the study’s co-author Aparna Labroo of Northwestern University in the U.S., conducted six experiments to explore the relationship between light and emotion. Their paper is published in the Journal of Consumer Psychology. Participants in each case were divided into two groups: Some were placed in a brightly lit room where fluorescent ceiling lights were turned on, while others were placed in a dimly lit room where the only light came from computer monitors. © CBC 2014

Keyword: Emotions; Aggression
Link ID: 19279 - Posted: 02.22.2014

By BENEDICT CAREY BETHESDA, Md. — The police arrived at the house just after breakfast, dressed in full riot gear, and set up a perimeter at the front and back. Not long after, animal rights marchers began filling the street: scores of people, young and old, yelling accusations of murder and abuse, invoking Hitler, as neighbors stepped out onto their porches and stared. It was 1997, in Decatur, Ga. The demonstrators had clashed with the police that week, at the Yerkes National Primate Research Center at nearby Emory University, but this time, they were paying a personal call — on the house of the center’s director, inside with his wife and two teenage children. “I think it affected the three of them more than it did me, honestly,” said Dr. Thomas R. Insel, shaking his head at the memory. “But the university insisted on moving all of us to a safe place for a few days, to an ‘undisclosed location.’ “I’ll say this. I learned that if you’re going to take a stand, you’re going to make some people really angry — so you’d better believe in what you’re doing, and believe it completely.” For the past 11 years, Dr. Insel, a 62-year-old brain scientist, has run an equally contentious but far more influential outfit: the National Institute of Mental Health, the world’s leading backer of behavioral health research. The job comes with risk as well as power. Patient groups and scientists continually question the agency’s priorities, and politicians occasionally snipe at its decisions. Two previous directors resigned in the wake of inflammatory statements (one on marijuana laws, one comparing urban neighborhoods to jungles), and another stepped down after repeatedly objecting to White House decisions. © 2014 The New York Times Company

Keyword: Schizophrenia; Aggression
Link ID: 19202 - Posted: 02.04.2014

By Evelyn Boychuk, Caleb is a 14-year-old who enjoys playing video games and reading any book he can get his hands on – and in his spare time, he edits neuroscience papers for a scientific journal. Frontiers for Young Minds is the first journal to bring kids into the middle of the scientific process by making them editors – and it’s free for everyone. The idea came “from the depths of my mind, in a moment when I was bored at a scientific meeting,” says Bob Knight, editor in chief of Frontiers for Young Minds and a professor of psychology and neuroscience at the University of California, Berkeley. This is one of many science outreach efforts that are trying to get youth excited about science, technology, engineering and math courses. A preview version with 15 articles was released at the Society for Neuroscience conference on Nov. 11. The official launch of the monthly journal is planned for the U.S.A. Science and Engineering Festival in Washington D.C. in April. “The kids have been great,” says Knight. “Their reviews are not filtered, they just tell you what they think.” In an e-mail, one of the young editors said, “'Hey Bob, I have to tell you, I didn’t understand anything in this article. The words are too big and it’s too confusing,'” Knight recounted. When Caleb was asked if he would edit an article for this preview, "it seemed like an interesting opportunity," he said, so he gave it a try. © CBC 2014

Keyword: Miscellaneous
Link ID: 19145 - Posted: 01.18.2014

Imagine a couple of million years ago, a curious young alien from the planet Zantar — let's call him a grad student — lands on Earth, looks around and asks, "Who's the brainiest critter on this planet? Relative to body size, who's got the biggest brain?" The answer, back then, would not have been us. (Two million years ago, apes — even walking ones — had much smaller brains.) The brainiest weren't ancestral crows or parrots or magpies or ravens or elephants or colonies of ants or bees or termites. The Earthlings with the biggest brains back then were dolphins (and certain whales). The Zantarian grad student would have wanted to meet them. A visitor from Zantar and a dolphin check each other out. But had the grad student arrived earlier, dolphins wouldn't have been the champs, because evolution is always changing life. , at Emory University in Atlanta, has been studying fossilized brains. And looking back, she sees sudden spurts of brain growth in different animals. "[T]he most dramatic increase in brain-to-body ratio in dolphins and toothed whales occurred 35 million years ago," she tells Chris Impey, the astronomer and writer, in Talking About Life. Something happened to make their medium-sized brains bigger, Lori says, then bigger still. For 20 million years certain dolphin species kept their brains growing until — just as mysteriously as it started — about 15 million years ago, they stopped. Why? Had the dolphins answered some secret dolphin question? Figured out a puzzle? Adapted to an environmental change? Gotten tired? Hit a limit? What? Dolphin says, "Enough." ©2014 NPR

Keyword: Evolution; Aggression
Link ID: 19131 - Posted: 01.15.2014

The battle over animal experimentation in Italy took a nasty turn this week when anonymous activists posted fliers showing photos, home addresses, and telephone numbers of scientists involved in animal research at the University of Milan and labeled them as "murderers." The leaflets, which appeared in the night of 6 to 7 January, triggered widespread condemnation in academic and political circles. The posters targeted physiologist Edgardo D'Angelo, parasitologist Claudio Genchi, pharmacologist Alberto Corsini, and Maura Francolini, a biologist. The texts say they are “guilty” of performing animal experiments; Corsini is said to "have tortured and killed animals for more than 30 years.” His flier ends with his phone number and the suggestion to "call this executioner and tell him what you think of him." Although the fliers didn't contain a specific call to violence, the implicit threat is unmistakable, Italian scientists say. Pro-Test Italia, an organization that seeks to defend and explain animal research, has likened the campaign to a witch hunt. “It's unacceptable that those who work for the good of science and public health are called murderers by someone who publicly incites violence against them,” says Dario Padovan, a biologist and president of Pro-Test Italia. Many politicians condemned the new tactic as well. "I wish to express my deepest sympathy and support to the researchers in Milan for the intimidation and threats they suffered," Italy's minister of education, universities and research, Maria Chiara Carrozza, tweeted yesterday. The University of Milan has filed a complaint and the city's police department has started an investigation. “We will strengthen our commitment to the defense of research as a tool to improve knowledge and care for sick people,” Gianluca Vago, the university's rector, told the newspaper Corriere della Sera. © 2014 American Association for the Advancement of Science

Keyword: Animal Rights
Link ID: 19116 - Posted: 01.11.2014

By Christian Jarrett Christmas is over and the start of the movie awards season is only weeks away! This is my excuse for a post about cinema and the brain. Over the years I’ve been keeping note of actors who studied neuroscience and other similar factoids and now I have the chance to share them with you. So here, in no particular order, are 10 surprising links between the worlds of Hollywood and brain research: 1. Actress Mayim Bialik is a neuroscientist. Bialik currently plays the character of neuroscientist Amy Fowler in the Big Bang Theory, which is neat because Bialik herself has a PhD in neuroscience. Her PhD thesis, completed at UCLA in 2007, has the title: “Hypothalamic regulation in relation to maladaptive, obsessive-compulsive, affiliative, and satiety behaviors in Prader-Willi syndrome.” “I don’t try and rub my neuroscience brain in people’s face[s],” Bialik says, “but when we have lab scenes … I have had to say that’s not where the tectum would be, we need it down here … or I’ve actually carved the fourth ventricle into slices … ’cause you know, why not have me do it.” Among her other acting roles, Bialik also featured in the short film for Michael Jackson’s Liberian Girl and she played the child version of Bette Midler’s character in Beaches (1988). 2. Natalie Portman is a neuroscientist. Perform a Google Scholar search on her name and you won’t get very far. But under her original name of Natalie Hershlag, the Oscar-winning actress co-authored a paper in 2002 on the role of the frontal lobes in infants’ understanding of “object permanence” – recognizing that things still exist even when you can’t see them. According to the Mind Hacks blog, Ms. Portman contributed to this research while working as a research assistant at Harvard University. Her paper has now been cited in the literature over 100 times. © 2013 Condé Nast.

Keyword: Miscellaneous
Link ID: 19079 - Posted: 12.31.2013

Ian Sample, science correspondent Differences in children's exam results at secondary school owe more to genetics than teachers, schools or the family environment, according to a study published yesterday. The research drew on the exam scores of more than 11,000 16-year-olds who sat GCSEs at the end of their secondary school education. In the compulsory core subjects of English, maths and science, genetics accounted for on average 58% of the differences in scores that children achieved. Grades in the sciences, such as physics, biology and chemistry, were more heritable than those in humanities subjects, such as art and music, at 58% and 42% respectively. The findings do not mean that children's performance at school is determined by their genes, or that schools and the child's environment have no influence. The overall effect of a child's environment – including their home and school life – accounted for 36% of the variation seen in students' exam scores across all subjects, the study found. "The question we are asking is why do children differ in their GCSE scores? People immediately think it's schools. But if schools accounted for all the variance, then children in one classroom would all be the same," said Robert Plomin, an expert in behavioural genetics who led the study at King's College London. To tease out the genetic contribution to children's school grades, the researchers studied GCSE scores of identical twins (who share 100% of their genes) and non-identical twins (who share on average half of the genes that normally vary between people). Both groups share their environments to a similar extent. © 2013 Guardian News and Media Limited

Keyword: Intelligence; Aggression
Link ID: 19027 - Posted: 12.12.2013

Three lawsuits filed last week that attempted to achieve “legal personhood” for four chimpanzees living in New York have been struck down. The suits, brought by the animal rights group the Nonhuman Rights Project (NhRP), targeted two chimps on private property and two in a research lab at Stony Brook University in New York. They were the first step in a nationwide campaign to grant legal rights to a variety of animals. NhRP had spent 5 years honing its legal strategy. It picked what it thought would be the most favorable jurisdictions and petitioned the judges with a writ of habeas corpus, which allows a person being held captive to have a say in court. Suffolk County Supreme Court Justice W. Gerard Asher denied the writ for the Stony Brook chimpanzees, writing in a brief decision that the animals did not qualify for habeas corpus because they were not “persons.” Both chimps are used in locomotion research at the university in work that is attempting to shed light on the origin of bipedalism in humans. Asher did not meet with NhRP lawyers; he issued his decision via a court clerk. The other judges were more accommodating. Fulton County Supreme Court Justice Joseph Sise and Niagara County Supreme Court Justice Ralph Boniello both allowed NhRP lawyers to make oral arguments in the courtroom. “As an animal lover, I appreciate your work,” said Sise, who handled the case of a chimpanzee named Tommy living in cage on his owner’s property in Gloversville, according to an NhRP press release. The group made “a very strong argument,” Sise said, according to the release, but he did not agree that habeas corpus applied to chimpanzees. Boniello, who oversaw the case of a chimp named Kiko living on his owner’s property in Niagara Falls, said he did not want to be the first “to make that leap of faith” equating chimpanzees with human beings. © 2013 American Association for the Advancement of Science.

Keyword: Animal Rights
Link ID: 19016 - Posted: 12.11.2013

This morning, an animal rights group known as the Nonhuman Rights Project (NhRP) filed a lawsuit in a New York Supreme Court in an attempt to get a judge to declare that chimpanzees are legal persons and should be freed from captivity. The suit is the first of three to be filed in three New York counties this week. They target two research chimps at Stony Brook University and two chimps on private property, and are the opening salvo in a coordinated effort to grant “legal personhood” to a variety of animals across the United States. If NhRP is successful in New York, it could be a significant step toward upending millennia of law defining animals as property and could set off a “chain reaction” that could bleed over to other jurisdictions, says Richard Cupp, a law professor at Pepperdine University in Malibu, California, and a proponent of focusing on animal welfare rather than animal rights. “But if they lose it could be a significant step backward for the movement. They’re playing with fire.” The litigation has been in the works since 2007, when animal rights attorney Steven Wise founded NhRP, an association of about 60 lawyers, scientists, and policy experts. The group argues that cognitively advanced animals like chimpanzees and dolphins are so self-aware that keeping them in captivity—whether a zoo or research laboratory—is tantamount to slavery. “It’s a terrible torture we inflict on them, and it has to stop,” Wise says. “And all of human law says the way things stop is when courts and legislatures recognize that the being imprisoned is a legal person.” NhRP spent 5 years researching the best legal strategy—and best jurisdiction—for its first cases. The upshot: a total of three lawsuits to be filed in three New York trial courts this week on behalf of four resident chimpanzees. © 2013 American Association for the Advancement of Science

Keyword: Animal Rights
Link ID: 18993 - Posted: 12.03.2013

To expedite research on brain disorders, the National Institutes of Health is shifting from a limited funding role to coordinating a Web-based resource for sharing post-mortem brain tissue. Under a NIH NeuroBioBank initiative, five brain banks will begin collaborating in a tissue sharing network for the neuroscience community. “Instead of having to seek out brain tissue needed for a study from scattered repositories, researchers will have one-stop access to the specimens they need,” explained Thomas Insel, M.D., director of NIH’s National Institute of Mental Health (NIMH), one of three NIH institutes underwriting the project. “Such efficiency has become even more important with recent breakthrough technologies, such as CLARITY and resources such as BrainSpan that involve the use of human tissue.” Historically, NIH institutes have awarded investigator-initiated grants to support disease-specific brain bank activities. The NIH NeuroBioBank instead employs contracts, which affords the agency a more interactive role. Contracts totaling about $4.7 million for the 2013 fiscal year were awarded to brain banks at the Mount Sinai School of Medicine, New York City; Harvard University in Cambridge, Mass., the University of Miami; Sepulveda Research Corporation, Los Angeles; and the University of Pittsburgh. These brain and tissue repositories seek out and accept brain donations, store the tissue, and distribute it to qualified researchers seeking to understand the causes of – and identify treatments and cures for – brain disorders, such as schizophrenia, multiple sclerosis, depression, epilepsy, Down syndrome and autism.

Keyword: Miscellaneous
Link ID: 18992 - Posted: 12.03.2013

By Scott Barry Kaufman One of the longest standing assumptions about the nature of human intelligence has just been seriously challenged. According to the traditional “investment” theory, intelligence can be classified into two main categories: fluid and crystallized. Differences in fluid intelligence are thought to reflect novel, on-the-spot reasoning, whereas differences in crystallized intelligence are thought to reflect previously acquired knowledge and skills. According to this theory, crystallized intelligence develops through the investment of fluid intelligence in a particular body of knowledge. As far as genetics is concerned, this story has a very clear prediction: In the general population– in which people differ in their educational experiences– the heritability of crystallized intelligence is expected to be lower than the heritability of fluid intelligence. This traditional theory assumes that fluid intelligence is heavily influenced by genes and relatively fixed, whereas crystallized intelligence is more heavily dependent on acquired skills and learning opportunities. But is this story really true? In a new study, Kees-Jan Kan and colleagues analyzed the results of 23 independent twin studies conducted with representative samples, yielding a total sample of 7,852 people. They investigated how heritability coefficients vary across specific cognitive abilities. Importantly, they assessed the “Cultural load” of various cognitive abilities by taking the average percentage of test items that were adjusted when the test was adapted for use in 13 different countries. © 2013 Scientific American

Keyword: Intelligence; Aggression
Link ID: 18821 - Posted: 10.22.2013

by NPR Staff Soon you'll be able to direct the path of a cockroach with a smartphone and the swipe of your finger. Greg Gage and his colleagues at Backyard Brains have developed a device called the that lets you control the path of an insect. It may make you squirm, but Gage says the device could inspire a new generation of neuroscientists. "The sharpest kids amongst us are probably going into other fields right now. And so we're kind of in the dark ages when it comes to neuroscience," he tells NPR's Arun Rath. He wants to get kids interested in neuroscience early enough to guide them toward that career path. And a cyborg cockroach might be the inspiration. "The neurons in the insects are very, very similar to the neurons inside the human brain," Gage says. "It's a beautiful way to just really understand what's happening inside your brain by looking at these little insects." The idea was spawned by a device the Backyard Brain-iacs developed called , which is capable of amplifying real living neurons. Insert a small wire into a cockroach's antennae, and you can hear the sound of actual neurons. "Lining the inside of the cockroach are these neurons that are picking up touch or vibration sensing, chemical sensing," Gage says. "They use it like a nose or a large tongue, their antennas, and they use it to sort of navigate the world. "So when you put a small wire inside of there, you can actually pick up the information as it's being encoded and being sent to the brain." With the RoboRoach device and smartphone app, you can interact with the antennae to influence the insect's behavior. ©2013 NPR

Keyword: Robotics
Link ID: 18819 - Posted: 10.22.2013

By MICHAEL WINES NEW HOLSTEIN, Wis. — Next to their white clapboard house on a rural road here, in long rows of cages set beneath the roofs of seven open-air sheds, Virginia and Gary Bonlander are raising 5,000 minks. Or were, anyway, until two Saturdays ago, when the police roused them from bed at 5 a.m. with a rap on their door. The Bonlanders woke one recent morning to find thousands of the creatures zipping across their lawn. Outside, 2,000 minks were scampering away — up to 50 top-quality, full-length and, suddenly, free-range mink coats. “The backyard was full of mink. The driveway was full of mink,” Mrs. Bonlander recalled a few days ago. “Then, pshew” — she made a whooshing sound — “they were gone.” And not only in Wisconsin, the mink-raising capital of the United States. After something of a hiatus, the animal rights movement has resumed a decades-old guerrilla war against the fur industry with a vengeance — and hints of more to come. In New Holstein; in Grand Meadow, Minn.; in Coalville, Utah; in Keota, Iowa; and four other states, activists say, eight dark-of-night raids on mink farms have liberated at least 7,700 of the critters — more than $770,000 worth of pelts — just since late July. That is more such raids than in the preceding three years combined. Two more raids in Ontario and British Columbia freed 1,300 other minks and foxes during the same period, according to the North American Animal Liberation Press Office, which bills itself as a conduit for messages from anonymous animal rights activists. “What we’re seeing now is unprecedented,” Peter Young, a Santa Cruz, Calif., activist who was imprisoned in 2005 for his role in raids on six mink ranches, said in a telephone interview. Though still an outspoken defender of the animal rights movement and mink-ranch raids, Mr. Young says he has no contact with those who raid fur farms or commit other illegal acts and, in fact, does not know who they are. © 2013 The New York Times Company

Keyword: Animal Rights
Link ID: 18797 - Posted: 10.17.2013