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Javier E

Training the Emotional Brain : An Interview with Richard J. Davidson : Sam Harris - 0 views

  • From quite early on in my career, there were two critical observations that came to form the core of my subsequent life’s work.  The first observation is that the most salient characteristic of emotion in people is the fact that each person responds differently to life’s slings and arrows.  Each of us is unique in our emotional make-up and this individuality determines why some people are resilient and others vulnerable, why some have high levels of well-being despite objective adversity while others decompensate rapidly in the response to the slightest setback.
  • the great fortune I had early in my career to be around some remarkable people.  They were remarkable not because of their academic or professional achievements, but rather because of their demeanor, really because of their emotional style.  These were extremely kind and generous people.  They were very attentive, and when I was in their presence I felt as if I was the sole and complete focus of all of their attention.  They were people that I found myself wishing to be around more.  And I learned that one thing all of these people had in common was a regular practice of meditation.  And I asked them if they were like that all of their lives and they assured me they were not, but rather that these qualities had been nurtured and cultivated by their meditative practices.
  • It wasn’t until many years later that I encountered neuroplasticity and recognized that the mechanisms of neuroplasticity were an organizing framework for understanding how emotional styles could be transformed.  While they were quite stable over time in most adults, they could still be changed through systematic practice of specific mental exercises.  In a very real and concrete sense, we could change our brains by transforming our minds.  And there was no realm more important for that to occur than emotion.  For it is so that our emotional styles play an incredibly important role in determining who will be vulnerable to psychopathology
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  • I describe 6 emotional styles that are rooted in basic neuroscientific research.  The 6 styles are: 1. Resilience: How rapidly or slowly do you recover from adversity? 2. Outlook: How long does positive emotion persist following a joyful event? 3. Social Intuition: How accurate are you in detecting the non-verbal social cues of others? 4. Context: Do you regulate your emotion in a context-sensitive fashion? 5. Self-Awareness: How aware are you of your own bodily signals that constitute emotion? 6. Attention: How focused or scattered in your attention?
  • each of these styles has arisen inductively from the large corpus of research my colleagues and I have conducted using rigorous neuroscientific methods over the past 30 years.
  • they can explain the constituents of commonly found personality types. 
grayton downing

Snakes on a Visual Plane | The Scientist Magazine® - 0 views

  • primates have a remarkable ability to detect snakes, even in a chaotic visual environment.
  • first evidence of snake-selective neurons in the primate brain that I’m aware of,
  • recorded pulvinar neuronal activity via electrodes implanted into the brains of two adult macaques—one male, one female—as they were shown images of monkey faces, monkey hands, geometric shapes, and snakes. The brains of both monkeys—which were raised at a national monkey farm in Amami Island, Japan, and had no known encounters with snakes before the experiment—showed preferential activity of neurons in the medial and dorsolateral pulvinar to images of snakes, as compared with the other stimuli. Further, snakes elicited the fastest and strongest responses from these neurons.
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  • neurobiological evidence of pulvinar neuron responses to a potential predation threat is convincing, Dobson noted more work is needed to support a role for snakes in primate evolution.
  • “fear module” in the primate brain—a construct that enables “quick responses to stimuli that signal danger, such as predators and threatening faces”
  • “Since they [the authors] haven’t—to my knowledge—tested the same stimuli on various other parts of the visual system, they don’t have evidence that these putatively selective cells are a specialization of the ‘fear module’ at all,”
Ellie McGinnis

The Lasting Impacts of Poverty on the Brain - Emily Badger - The Atlantic Cities - 2 views

  • Poverty shapes people in some hard-wired ways that we're only now beginning to understand.
  • Live in poverty as a child, and it affects you as an adult, too
  • Those who grew up poor later had impaired brain function as adults—a disadvantage researchers could literally see in the activity of the amygdala and prefrontal cortex on an fMRI scan.
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  • Children who were poor at age 9 had greater activity in the amygdala and less activity in the prefrontal cortex at age 24 during an experiment when they were asked to manage their emotions while looking at a series of negative photos.
  • This is significant because the two regions of the brain play a critical role in how we detect threats and manage stress and emotions.
  • Poor children, in effect, had more problems regulating their emotions as adults
  • That theory, they write, is consistent with the idea that "early experiences of poverty become embedded within the organism, setting individuals on lifelong trajectories."
Javier E

Why Police Lineups Will Never Be Perfect - The Atlantic - 1 views

  • Eyewitness testimony is hugely influential in criminal cases. And yet, brain research has shown again and again that human memory is unreliable: Every time a memory is recalled it becomes vulnerable to change. Confirming feedback—such as a detective telling a witness she “did great”—seems to distort memories, making them feel more accurate with each recollection. Since the start of the Innocence Project 318 cases have been overturned thanks to DNA testing. Eyewitness mistakes played a part in nearly three-quarters of them.
  • psychology researchers have been searching for ways to make eyewitness identifications more reliable. Many studies have shown, for example, the value of “double-blind” lineups, meaning that neither the cop administering the lineup nor the witness knows which of the photos, if any, is the suspect.
  • 160 page report offers many concrete suggestions for carrying out eyewitness identifications. For example, the Academy recommends using double-blind lineups and standardized witness instructions, and training law enforcement officials on the fallibility of eyewitness memory.
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  • In fact, Wells’s studies found that sequential lineups slashed the rate of false positives considerably. His first study showed a drop in incorrect accusations  43 to 17 percent. Sequential lineups also slightly increased the number of missed identifications
Javier E

Guess Who Doesn't Fit In at Work - NYTimes.com - 0 views

  • ACROSS cultures and industries, managers strongly prize “cultural fit” — the idea that the best employees are like-minded.
  • One recent survey found that more than 80 percent of employers worldwide named cultural fit as a top hiring priority.
  • When done carefully, selecting new workers this way can make organizations more productive and profitable.
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  • In the process, fit has become a catchall used to justify hiring people who are similar to decision makers and rejecting people who are not.
  • The concept of fit first gained traction in the 1980s. The original idea was that if companies hired individuals whose personalities and values — and not just their skills — meshed with an organization’s strategy, workers would feel more attached to their jobs, work harder and stay longer.
  • in many organizations, fit has gone rogue. I saw this firsthand while researching the hiring practices of the country’s top investment banks, management consultancies and law firms. I interviewed 120 decision makers and spent nine months observing
  • While résumés (and connections) influenced which applicants made it into the interview room, interviewers’ perceptions of fit strongly shaped who walked out with job offers.
  • Crucially, though, for these gatekeepers, fit was not about a match with organizational values. It was about personal fit. In these time- and team-intensive jobs, professionals at all levels of seniority reported wanting to hire people with whom they enjoyed hanging out and could foresee developing close relationships with
  • To judge fit, interviewers commonly relied on chemistry. “
  • Many used the “airport test.” As a managing director at an investment bank put it, “Would I want to be stuck in an airport in Minneapolis in a snowstorm with them?”
  • interviewers were primarily interested in new hires whose hobbies, hometowns and biographies matched their own. Bonding over rowing college crew, getting certified in scuba, sipping single-malt Scotches in the Highlands or dining at Michelin-starred restaurants was evidence of fit; sharing a love of teamwork or a passion for pleasing clients was not
  • it has become a common feature of American corporate culture. Employers routinely ask job applicants about their hobbies and what they like to do for fun, while a complementary self-help industry informs white-collar job seekers that chemistry, not qualifications, will win them an offer.
  • Selection based on personal fit can keep demographic and cultural diversity low
  • In the elite firms I studied, the types of shared experiences associated with fit typically required large investments of time and money.
  • Class-biased definitions of fit are one reason investment banks, management consulting firms and law firms are dominated by people from the highest socioeconomic backgrounds
  • Also, whether the industry is finance, high-tech or fashion, a good fit in most American corporations still tends to be stereotypically masculine.
  • Perhaps most important, it is easy to mistake rapport for skill. Just as they erroneously believe that they can accurately tell when someone is lying, people tend to be overly confident in their ability to spot talent. Unstructured interviews, which are the most popular hiring tools for American managers and the primary way they judge fit, are notoriously poor predictors of job performance.
  • Organizations that use cultural fit for competitive advantage tend to favor concrete tools like surveys and structured interviews that systematically test behaviors associated with increased performance and employee retention.
  • For managers who want to use cultural fit in a more productive way, I have several suggestions.
  • First, communicate a clear and consistent idea of what the organization’s culture is (and is not) to potential employees. Second, make sure the definition of cultural fit is closely aligned with business goals. Ideally, fit should be based on data-driven analysis of what types of values, traits and behaviors actually predict on-the-job success. Third, create formal procedures like checklists for measuring fit, so that assessment is not left up to the eyes (and extracurriculars) of the beholder.
  • But cultural fit has become a new form of discrimination that keeps demographic and cultural diversity down
summertyler

Seeing Isn't Believing | The Scientist Magazine® - 0 views

  • Much of the early research on motion perception was performed on insects,1 but similar results have been found for a huge range of species, from fishes to birds to mammals
  • Correspondingly, prey animals would find color vision of little use, but they are extremely good at seeing the motion of an approaching predator.
  • Ambiguous illusions that can be interpreted in two different ways, but not both ways at the same time, can also shed light on how we perceive the world around us
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  • But as good as animals are at detecting motion, they can also be fooled.
  • Visual movement can be thought of as a change in brightness, or luminance, over space and time
  • Why does the visual system treat this jumping dot as a single object in motion, instead of seeing one spot disappear while an unrelated spot appears nearby at the same instant? First, the brain usually treats “suspicious coincidences” as being more than coincidences: it is more likely that this is a single spot in motion rather than two separate events. Second, the visual system is tolerant of brief gaps in stimuli, filling in those gaps when necessary. This perception of apparent motion is, of course, the basis of the entire movie and TV industries, as viewers see a smooth motion picture when in reality they are simply watching a series of stationary stills.
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    The perception of illusions
Javier E

Many on Wall Street Say It Remains Untamed - NYTimes.com - 0 views

  • virtually all the large firms said that if there was bad behavior, it is behind them.Well, it isn’t.
  • A new report on financial professionals’ views of their industry paints a troubling picture. Rather than indicating that Wall Street has cleaned itself up, it suggests that many of the lessons of the crisis still haven’t been learned.
  • about a third of the people who said they made more than $500,000 annually contend that they “have witnessed or have firsthand knowledge of wrongdoing in the workplace.”
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  • “Nearly one in five respondents feel financial service professionals must sometimes engage in unethical or illegal activity to be successful in the current financial environment.”
  • One in 10 said they had directly felt pressure “to compromise ethical standards or violate the law.”
  • And nearly half of the high-income earners say law enforcement and regulatory authorities in their country are ineffective “in detecting, investigating and prosecuting securities violations.”
  • expanded its questionnaire to more than 1,200 traders, portfolio managers, investment bankers and hedge fund professionals both in the United States and Britain
  • Its results appear even more noteworthy today for the sheer number of individuals who continue to say the ethics of the industry remain unchanged since the crisis (a third said that, by the way)
Javier E

The Science of Why We Don't Believe Science | Mother Jones - 2 views

  • an array of new discoveries in psychology and neuroscience has further demonstrated how our preexisting beliefs, far more than any new facts, can skew our thoughts and even color what we consider our most dispassionate and logical conclusions. This tendency toward so-called "motivated reasoning" helps explain why we find groups so polarized over matters where the evidence is so unequivocal: climate change, vaccines, "death panels," the birthplace and religion of the president (PDF), and much else. It would seem that expecting people to be convinced by the facts flies in the face of, you know, the facts.
  • The theory of motivated reasoning builds on a key insight of modern neuroscience (PDF): Reasoning is actually suffused with emotion (or what researchers often call "affect"). Not only are the two inseparable, but our positive or negative feelings about people, things, and ideas arise much more rapidly than our conscious thoughts, in a matter of milliseconds—fast enough to detect with an EEG device, but long before we're aware of it. That shouldn't be surprising: Evolution required us to react very quickly to stimuli in our environment. It's a "basic human survival skill," explains political scientist Arthur Lupia of the University of Michigan. We push threatening information away; we pull friendly information close. We apply fight-or-flight reflexes not only to predators, but to data itself.
  • reasoning comes later, works slower—and even then, it doesn't take place in an emotional vacuum. Rather, our quick-fire emotions can set us on a course of thinking that's highly biased, especially on topics we care a great deal about.
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  • Consider a person who has heard about a scientific discovery that deeply challenges her belief in divine creation—a new hominid, say, that confirms our evolutionary origins. What happens next, explains political scientist Charles Taber of Stony Brook University, is a subconscious negative response to the new information—and that response, in turn, guides the type of memories and associations formed in the conscious mind. "They retrieve thoughts that are consistent with their previous beliefs," says Taber, "and that will lead them to build an argument and challenge what they're hearing."
  • In other words, when we think we're reasoning, we may instead be rationalizing. Or to use an analogy offered by University of Virginia psychologist Jonathan Haidt: We may think we're being scientists, but we're actually being lawyers
  • Our "reasoning" is a means to a predetermined end—winning our "case"—and is shot through with biases. They include "confirmation bias," in which we give greater heed to evidence and arguments that bolster our beliefs, and "disconfirmation bias," in which we expend disproportionate energy trying to debunk or refute views and arguments that we find uncongenial.
  • That's not to suggest that we aren't also motivated to perceive the world accurately—we are. Or that we never change our minds—we do. It's just that we have other important goals b
  • esides accuracy—including identity affirmation and protecting one's sense of self—and often those make us highly resistant to changing our beliefs when the facts say we should.
Javier E

How to Invent a Person Online - Curtis Wallen - The Atlantic - 2 views

  • Social networks and data brokers use algorithms and probabilities to reconstruct our identities, and then try to influence the way we think and feel and make decisions.
  • t’s not an exaggeration to say everything you do online is being followed. And the more precisely a company can tailor your online experience, the more money it can make from advertisers.
  • After Edward Snowden’s leaks about NSA surveillance, Tucker and Marthews found, the frequency of these sensitive search terms declined—suggesting that Internet users have become less likely to explore "search terms that they [believe] might get them in trouble with the U.S. government." The study also found that people have become less likely to search "embarrassing" topics
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  • In other words, people are doing their best to blend in with the crowd.
  • The challenge of achieving true anonymity, though, is that evading surveillance makes your behavior anomalous—and anomalies stick out. As the Japanese proverb says, "A nail that sticks out gets hammered down." Glenn Greenwald explained recently that simply using encryption can make you a target. For me, this was all the more motivation to disappear.
  • The U.S. Department of Defense has also figured out how influential Facebook and Twitter can be. In 2011, it announced a new “Social Media in Strategic Communication” (SMISC) program to detect and counter information the U.S. government deemed dangerous. “Since everyone is potentially an influencer on social media and is capable of spreading information,” one researcher involved in a SMISC study told The Guardian, “our work aims to identify and engage the right people at the right time on social media to help propagate information when needed.”
  • For those of us who feel confident that we have nothing to hide, the future of Internet security might not seem like a major concern. But we underestimate the many ways in which our online identities can be manipulated.
  • Private companies are also using personal information in hidden ways. They don’t simply learn our tastes and habits, offering us more of what want and less of what we don’t. As Michael Fertik wrote in a 2013 Scientific American article titled “The Rich See a Different Internet Than the Poor,” credit lenders have the ability to hide their offers from people who may need loans the most. And Google now has a patent to change its prices based on who’s buying. 
  • It is essentially impossible to achieve anonymity online. It requires a complete operational posture that extends from the digital to the physical. Downloading a secure messaging app and using Tor won’t all of a sudden make you “NSA-proof.” And doing it right is really, really hard.
  • Weighing these trade-offs in my day-to-day life led to a few behavioral changes, but I have a mostly normal relationship with the Internet—I deleted my Facebook account, I encrypt my emails whenever I can, and I use a handful of privacy minded browser extensions. But even those are steps many people are unwilling, or unable, to take.
Emily Freilich

All Can Be Lost: The Risk of Putting Our Knowledge in the Hands of Machines - Nicholas ... - 0 views

  • We rely on computers to fly our planes, find our cancers, design our buildings, audit our businesses. That's all well and good. But what happens when the computer fails?
  • On the evening of February 12, 2009, a Continental Connection commuter flight made its way through blustery weather between Newark, New Jersey, and Buffalo, New York.
  • The Q400 was well into its approach to the Buffalo airport, its landing gear down, its wing flaps out, when the pilot’s control yoke began to shudder noisily, a signal that the plane was losing lift and risked going into an aerodynamic stall. The autopilot disconnected, and the captain took over the controls. He reacted quickly, but he did precisely the wrong thing: he jerked back on the yoke, lifting the plane’s nose and reducing its airspeed, instead of pushing the yoke forward to gain velocity.
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  • The crash, which killed all 49 people on board as well as one person on the ground, should never have happened.
  • aptain’s response to the stall warning, the investigators reported, “should have been automatic, but his improper flight control inputs were inconsistent with his training” and instead revealed “startle and confusion.
  • Automation has become so sophisticated that on a typical passenger flight, a human pilot holds the controls for a grand total of just three minutes.
  • We humans have been handing off chores, both physical and mental, to tools since the invention of the lever, the wheel, and the counting bead.
  • And that, many aviation and automation experts have concluded, is a problem. Overuse of automation erodes pilots’ expertise and dulls their reflexes,
  • No one doubts that autopilot has contributed to improvements in flight safety over the years. It reduces pilot fatigue and provides advance warnings of problems, and it can keep a plane airborne should the crew become disabled. But the steady overall decline in plane crashes masks the recent arrival of “a spectacularly new type of accident,”
  • “We’re forgetting how to fly.”
  • The experience of airlines should give us pause. It reveals that automation, for all its benefits, can take a toll on the performance and talents of those who rely on it. The implications go well beyond safety. Because automation alters how we act, how we learn, and what we know, it has an ethical dimension. The choices we make, or fail to make, about which tasks we hand off to machines shape our lives and the place we make for ourselves in the world.
  • What pilots spend a lot of time doing is monitoring screens and keying in data. They’ve become, it’s not much of an exaggeration to say, computer operators.
  • Examples of complacency and bias have been well documented in high-risk situations—on flight decks and battlefields, in factory control rooms—but recent studies suggest that the problems can bedevil anyone working with a computer
  • That may leave the person operating the computer to play the role of a high-tech clerk—entering data, monitoring outputs, and watching for failures. Rather than opening new frontiers of thought and action, software ends up narrowing our focus.
  • A labor-saving device doesn’t just provide a substitute for some isolated component of a job or other activity. It alters the character of the entire task, including the roles, attitudes, and skills of the people taking part.
  • when we work with computers, we often fall victim to two cognitive ailments—complacency and bias—that can undercut our performance and lead to mistakes. Automation complacency occurs when a computer lulls us into a false sense of security. Confident that the machine will work flawlessly and handle any problem that crops up, we allow our attention to drift.
  • Automation bias occurs when we place too much faith in the accuracy of the information coming through our monitors. Our trust in the software becomes so strong that we ignore or discount other information sources, including our own eyes and ears
  • Automation is different now. Computers can be programmed to perform complex activities in which a succession of tightly coordinated tasks is carried out through an evaluation of many variables. Many software programs take on intellectual work—observing and sensing, analyzing and judging, even making decisions—that until recently was considered the preserve of humans.
  • Automation turns us from actors into observers. Instead of manipulating the yoke, we watch the screen. That shift may make our lives easier, but it can also inhibit the development of expertise.
  • Since the late 1970s, psychologists have been documenting a phenomenon called the “generation effect.” It was first observed in studies of vocabulary, which revealed that people remember words much better when they actively call them to mind—when they generate them—than when they simply read them.
  • When you engage actively in a task, you set off intricate mental processes that allow you to retain more knowledge. You learn more and remember more. When you repeat the same task over a long period, your brain constructs specialized neural circuits dedicated to the activit
  • What looks like instinct is hard-won skill, skill that requires exactly the kind of struggle that modern software seeks to alleviate.
  • In many businesses, managers and other professionals have come to depend on decision-support systems to analyze information and suggest courses of action. Accountants, for example, use the systems in corporate audits. The applications speed the work, but some signs suggest that as the software becomes more capable, the accountants become less so.
  • You can put limits on the scope of automation, making sure that people working with computers perform challenging tasks rather than merely observing.
  • Experts used to assume that there were limits to the ability of programmers to automate complicated tasks, particularly those involving sensory perception, pattern recognition, and conceptual knowledge
  • Who needs humans, anyway? That question, in one rhetorical form or another, comes up frequently in discussions of automation. If computers’ abilities are expanding so quickly and if people, by comparison, seem slow, clumsy, and error-prone, why not build immaculately self-contained systems that perform flawlessly without any human oversight or intervention? Why not take the human factor out of the equation?
  • The cure for imperfect automation is total automation.
  • That idea is seductive, but no machine is infallible. Sooner or later, even the most advanced technology will break down, misfire, or, in the case of a computerized system, encounter circumstances that its designers never anticipated. As automation technologies become more complex, relying on interdependencies among algorithms, databases, sensors, and mechanical parts, the potential sources of failure multiply. They also become harder to detect.
  • conundrum of computer automation.
  • Because many system designers assume that human operators are “unreliable and inefficient,” at least when compared with a computer, they strive to give the operators as small a role as possible.
  • People end up functioning as mere monitors, passive watchers of screens. That’s a job that humans, with our notoriously wandering minds, are especially bad at
  • people have trouble maintaining their attention on a stable display of information for more than half an hour. “This means,” Bainbridge observed, “that it is humanly impossible to carry out the basic function of monitoring for unlikely abnormalities.”
  • a person’s skills “deteriorate when they are not used,” even an experienced operator will eventually begin to act like an inexperienced one if restricted to just watching.
  • You can program software to shift control back to human operators at frequent but irregular intervals; knowing that they may need to take command at any moment keeps people engaged, promoting situational awareness and learning.
  • What’s most astonishing, and unsettling, about computer automation is that it’s still in its early stages.
  • most software applications don’t foster learning and engagement. In fact, they have the opposite effect. That’s because taking the steps necessary to promote the development and maintenance of expertise almost always entails a sacrifice of speed and productivity.
  • Learning requires inefficiency. Businesses, which seek to maximize productivity and profit, would rarely accept such a trade-off. Individuals, too, almost always seek efficiency and convenience.
  • Abstract concerns about the fate of human talent can’t compete with the allure of saving time and money.
  • The small island of Igloolik, off the coast of the Melville Peninsula in the Nunavut territory of northern Canada, is a bewildering place in the winter.
  • , Inuit hunters have for some 4,000 years ventured out from their homes on the island and traveled across miles of ice and tundra to search for game. The hunters’ ability to navigate vast stretches of the barren Arctic terrain, where landmarks are few, snow formations are in constant flux, and trails disappear overnight, has amazed explorers and scientists for centuries. The Inuit’s extraordinary way-finding skills are born not of technological prowess—they long eschewed maps and compasses—but of a profound understanding of winds, snowdrift patterns, animal behavior, stars, and tides.
  • The Igloolik hunters have begun to rely on computer-generated maps to get around. Adoption of GPS technology has been particularly strong among younger Inuit, and it’s not hard to understand why.
  • But as GPS devices have proliferated on Igloolik, reports of serious accidents during hunts have spread. A hunter who hasn’t developed way-finding skills can easily become lost, particularly if his GPS receiver fails.
  • The routes so meticulously plotted on satellite maps can also give hunters tunnel vision, leading them onto thin ice or into other hazards a skilled navigator would avoid.
  • An Inuit on a GPS-equipped snowmobile is not so different from a suburban commuter in a GPS-equipped SUV: as he devotes his attention to the instructions coming from the computer, he loses sight of his surroundings. He travels “blindfolded,” as Aporta puts it
  • A unique talent that has distinguished a people for centuries may evaporate in a generation.
  • Computer automation severs the ends from the means. It makes getting what we want easier, but it distances us from the work of knowing. As we transform ourselves into creatures of the screen, we face an existential question: Does our essence still lie in what we know, or are we now content to be defined by what we want?
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    Automation increases efficiency and speed of tasks, but decreases the individual's knowledge of a task and decrease's a human's ability to learn. 
grayton downing

What makes a face go round | Science News - 0 views

  • And these transcriptional enhancers don’t have to be right next to the DNA they are relevant to. Instead, they can act at a distance, sometimes hundreds of kilobases away from the gene. T
  • They ended up with more than 4,000 potential transcriptional enhancers, an eye-popping number. Many of them were located near genes that were already known for their role in craniofacial development.
  • The effects of the enhancers on gene activity might have looked subtle, but when groups of adult mice were examined for facial shape, the results were detectable
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  • It shows that the little changes provided by many, many transcriptional enhancers can help make the small tweaks that result in an individual facial shape. Of, course, this study was done in mice, but it’s very possible that these effects are present in humans (though hopefully none of them result in a long furry snout). The results could help scientists better understand what gives one person that chiseled jaw, and another that heavy brow. And the next time you look in the mirror, and see your cleft chin or your prominent cheekbones, send out many small thank yous to your many, many transcriptional enhancers.
grayton downing

Oort cloud tosses astronomers a cometary curveball | Science News - 0 views

  • a mountain-sized chunk of primordial solar system, will approach within 2 million kilometers of the sun and either fall apart or slingshot back into deep space. Astronomers aren’t sure yet how much of a spectacle ISON will be for earthbound observers, but from their vantage point the comet is already providing a brief, unprecedented glimpse into what the solar system was like in its infancy.
  • “It’s the sort of thing I’ve been waiting for my whole career,”
  • hat probably indicates large amounts of ice near the comet’s surface, where the sun can easily drive it off, he says. The finding confirmed that ISON is on its first pass through the inner solar system, not a periodic visitor like Halley’s comet.
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  • Looking ahead, astronomers found that ISON will pass within a cosmic whisker of the sun, close enough to potentially be ripped apart by the star’s intense gravity.
  • Unlike previous sungrazing comets, ISON was detected more than a year out, giving researchers at the world's major ground-based telescopes plenty of time to watch its approach to the sun.
  • . Because sunlight interacts with gas and dust to make comets light up, Meech thinks the best explanation for her team’s data is that ISON’s nucleus contained a buried layer of solid carbon monoxide, a featherweight molecule that rapidly turns to gas when exposed to sunlight.
  • Because scientists have no data on the comet’s rotation, Knight and Walsh conclude that ISON will probably survive. However, Knight acknowledges that other comets have broken up for no known reason, and he is prepared for surprises.
  • Earthbound stargazers won’t notice these details, but motivated observers may be able to spot a new object in the predawn sky
Javier E

WHICH IS THE BEST LANGUAGE TO LEARN? | More Intelligent Life - 2 views

  • For language lovers, the facts are grim: Anglophones simply aren’t learning them any more. In Britain, despite four decades in the European Union, the number of A-levels taken in French and German has fallen by half in the past 20 years, while what was a growing trend of Spanish-learning has stalled. In America, the numbers are equally sorry.
  • compelling reasons remain for learning other languages.
  • First of all, learning any foreign language helps you understand all language better—many Anglophones first encounter the words “past participle” not in an English class, but in French. Second, there is the cultural broadening. Literature is always best read in the original. Poetry and lyrics suffer particularly badly in translation. And learning another tongue helps the student grasp another way of thinking.
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  • is Chinese the language of the future?
  • So which one should you, or your children, learn? If you take a glance at advertisements in New York or A-level options in Britain, an answer seems to leap out: Mandarin.
  • The practical reasons are just as compelling. In business, if the team on the other side of the table knows your language but you don’t know theirs, they almost certainly know more about you and your company than you do about them and theirs—a bad position to negotiate from.
  • This factor is the Chinese writing system (which Japan borrowed and adapted centuries ago). The learner needs to know at least 3,000-4,000 characters to make sense of written Chinese, and thousands more to have a real feel for it. Chinese, with all its tones, is hard enough to speak. But  the mammoth feat of memory required to be literate in Mandarin is harder still. It deters most foreigners from ever mastering the system—and increasingly trips up Chinese natives.
  • If you were to learn ten languages ranked by general usefulness, Japanese would probably not make the list. And the key reason for Japanese’s limited spread will also put the brakes on Chinese.
  • A recent survey reported in the People’s Daily found 84% of respondents agreeing that skill in Chinese is declining.
  • Fewer and fewer native speakers learn to produce characters in traditional calligraphy. Instead, they write their language the same way we do—with a computer. And not only that, but they use the Roman alphabet to produce Chinese characters: type in wo and Chinese language-support software will offer a menu of characters pronounced wo; the user selects the one desired. (Or if the user types in wo shi zhongguo ren, “I am Chinese”, the software detects the meaning and picks the right characters.) With less and less need to recall the characters cold, the Chinese are forgetting them
  • As long as China keeps the character-based system—which will probably be a long time, thanks to cultural attachment and practical concerns alike—Chinese is very unlikely to become a true world language, an auxiliary language like English, the language a Brazilian chemist will publish papers in, hoping that they will be read in Finland and Canada. By all means, if China is your main interest, for business or pleasure, learn Chinese. It is fascinating, and learnable—though Moser’s online essay, “Why Chinese is so damn hard,” might discourage the faint of heart and the short of time.
  • But if I was asked what foreign language is the most useful, and given no more parameters (where? for what purpose?), my answer would be French. Whatever you think of France, the language is much less limited than many people realise.
  • French ranks only 16th on the list of languages ranked by native speakers. But ranked above it are languages like Telegu and Javanese that no one would call world languages. Hindi does not even unite India. Also in the top 15 are Arabic, Spanish and Portuguese, major languages to be sure, but regionally concentrated. If your interest is the Middle East or Islam, by all means learn Arabic. If your interest is Latin America, Spanish or Portuguese is the way to go. Or both; learning one makes the second quite easy.
  • if you want another truly global language, there are surprisingly few candidates, and for me French is unquestionably top of the list. It can enhance your enjoyment of art, history, literature and food, while giving you an important tool in business and a useful one in diplomacy. It has native speakers in every region on earth. And lest we forget its heartland itself, France attracts more tourists than any other country—76.8m in 2010, according to the World Tourism Organisation, leaving America a distant second with 59.7m
Javier E

Polling's Secrecy Problem - NYTimes.com - 0 views

  • In the polling world, no survey firm releases its microdata in a timely manner. When pollsters release it at all — usually months after publication, to an archive that requires a paid subscription for access — they seldom provide the detailed methodological explanations necessary to replicate the survey results.
  • Critics have raised charges of full-scale fabrication, like that alleged in the LaCour study, about a handful of pollsters in recent years, and such a wholly fraudulent poll might well be able to evade detection.
  • But a bigger problem is that pollsters may be using questionable means to ensure that their results end up in a certain place. Any poll is required to make judgments about exactly how to weight the sample or decide who is likely to vote. But such choices can swing the results by several percentage points, and these decisions can be made with the results in mind.
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  • In particular, there is reason to think that pollsters engage in a behavior known as herding, in which they announce results that are similar to those of other recent polls
  • There is strong evidence that some firms have engaged in herding.
  • The firm has since switched to more conventional weighting techniques, bringing the wild swings in the racial composition of the electorate to an end. Its findings now resemble those of other pollsters: offering no obvious signs of herding, but also not providing the data that would rule it out.
  • the association recently began a transparency initiative intended to address some of the concerns.But few polling organizations have signed up so far, and the transparency initiative’s disclosure standards generally fall short of what is needed to allow others researchers to identify or deter dubious practices.
  • It’s hard to say what’s more telling: that the transparency standards wouldn’t be enough to preclude bad practices, or that so few pollsters seem willing to adhere to even those requirements.
qkirkpatrick

Data Breach Linked to China Exposes Millions of U.S. Workers - NYTimes.com - 0 views

  • The Obama administration on Thursday announced what appeared to be one of the largest breaches of federal employees’ data, involving at least four million current and former government workers in an intrusion that officials said apparently originated in China.
  • The compromised data was held by the Office of Personnel Management, which handles government security clearances and federal employee records. The breach was first detected in April, the office said, but it appears to have begun at least late last year.
  • There seems to be little doubt among federal officials that the attack was launched from China, but it was unclear whether the attack might have been state sponsore
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  • But because the breadth of the new attack was so much greater, the objective seems less clear.
  • The F.B.I. is “conducting an investigation to identify how and why this occurred,” S. Y. Lee, a spokesman for the Department of Homeland Security, said in a statement.
  • An annual “Strategic and Economic Dialogue” with Chinese officials is scheduled to take place this month, and cyberissues will again be in the forefront. But the administration on Thursday did not publicly identify Chinese hackers as the culprit in the latest case, just as it has not publicly identified Russians as responsible for the intrusions on the White House and State Department systems.
  •  
    Technology and how it is changing privacy.
Javier E

The Dark Side of Oxytocin, the Hormone of Love - Ethnocentrism - NYTimes.com - 0 views

  • As oxytocin comes into sharper focus, its social radius of action turns out to have definite limits. The love and trust it promotes are not toward the world in general, just toward a person’s in-group. Oxytocin turns out to be the hormone of the clan, not of universal brotherhood. Psychologists trying to specify its role have now concluded it is the agent of ethnocentrism.
  • In Dr. De Dreu’s experiments, the five people who might be saved were nameless, but the sacrificial victim had either a Dutch or a Muslim name. Subjects who had taken oxytocin were far more likely to sacrifice the Muhammads than the Maartens.
  • Dr. De Dreu plans to investigate whether oxytocin mediates other social behaviors that evolutionary psychologists think evolved in early human groups. Besides loyalty to one’s own group, there would also have been survival advantages in rewarding cooperation and punishing deviants. Oxytocin, if it underlies these behaviors too, would perhaps have helped ancient populations set norms of behavior.
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  • In the ancestral environment it was very important for people to detect in others whether they had a long-term commitment to the group,” Dr. De Dreu said. “Ethnocentrism is a very basic part of humans, and it’s not something we can change by education. That doesn’t mean that the negative aspects of it should be taken for granted.”
  • the effects of oxytocin described in Dr. De Dreu’s report were interesting but not necessarily dominant. The brain weighs emotional attitudes like those prompted by oxytocin against information available to the conscious mind. If there is no cognitive information in a situation in which a decision has to be made, like whether to trust a stranger about whom nothing is known, the brain will go with the emotional advice from its oxytocin system, but otherwise rational data will be weighed against the influence from oxytocin and may well override it
Keiko E

Jonah Lehrer on Yogurt, Gut Feelings and the Mind Body Problem | Head Case - WSJ.com - 0 views

  • it's not just the coiled cortex that gives rise to the mind—it's the entire body. As the neuroscientist Antonio Damasio writes, "The mind is embodied, not just embrained."
  • new study of probiotic bacteria, the microorganisms typically found in yogurt and dairy products. While most investigations of probiotics have focused on their gastrointestinal benefits—the bacteria reduce the symptoms of diarrhea and irritable bowel syndrome—this new research explored the effect of probiotics on the brain.
  • those fed probiotics had more GABA receptors in areas associated with memory and the regulation of emotions. (This change mimics the effects of popular antianxiety medications in humans.)
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  • There's nothing metaphorical about "gut feelings," for what happens in the gut really does influence what we feel. Nor is it just the gastrointestinal tract that alters our minds. Mr. Damasio has shown that neurological patients who are unable to detect changes in their own bodies, like an increased heart rate or sweaty palms, are also unable to make effective decisions
  • This research shows that the immateriality of mind is a deep illusion. Although we feel like a disembodied soul, many feelings and choices are actually shaped by the microbes in our gut and the palpitations of our heart.
carolinewren

Brain-to-brain interfaces: the science of telepathy - 0 views

  • Recent advances in brain-computer interfaces are turning the science fantasy of transmitting thoughts directly from one brain to another into reality.
  • A TMS device creates a magnetic field over the scalp, which then causes an electrical current in the brain.
  • Cell-to-cell communication occurs via a process known as synaptic transmission, where chemical signals are passed between cells resulting in electrical spikes in the receiving cell.
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  • Because cells are connected in a network, brain activity produces a synchronised pulse of electrical activity, which is called a “brain wave”.
  • Brainwaves are detected using a technique known as electroencephalography (EEG),
  • The pattern of activity is then recorded and interpreted using computer software.
  • The electrical nature of the brain allows not only for sending of signals, but also for the receiving of electrical pulses
  • Studies published in the last two years have reported direct transmission of brain activity between two animals, between two humans and even between a human and a rat.
  • The connection was reinforced by giving both rats a reward when the receiver rat performed the task correctly.
  • By combining EEG and TMS, scientists have transmitted the thought of moving a hand from one person to a separate individual, who actually moved their hand.
  • including EEG, the Internet and TMS – the team of researchers was able to transmit a thought all the way from India to France.
  • Words were first coded into binary notation
  • Now that these BBI technologies are becoming a reality, they have a huge potential to impact the way we interact with other humans. And maybe even the way we communicate with animals through direct transmission of thought.
  • Such technologies have obvious ethical and legal implications, however. So it is important to note that the success of BBIs depends upon the conscious coupling of the subjects.
aqconces

A scientific tale of two dresses - CNN.com - 0 views

shared by aqconces on 08 Mar 15 - No Cached
  • "Why do some people love cilantro and others say it tastes like soap? Why do some people have perfect pitch and others are tone deaf? It's the same with vision — our sensory apparatus is fine tuned,"
  • The cones in our retinas — the fine layer of nerve tissue that lines the back of our eyes — detect the blue, green, and red in an image. The cones and your brain mix those colors to make other colors.
  • "Ninety-nine percent of the time, we'll see the same colors," Haller says. "But the picture of this dress seems to have tints that hit the sweet spot that's confusing to a lot of people."
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  • "Your brain is constantly estimating the color of the light that's falling on the object and factoring that light out," said Wallace Thoreson, a professor of ophthalmology at the University of Nebraska Medical Center. "Each of us makes slightly different unconscious assumptions."
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