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Ed Webb

Mind - Research Upends Traditional Thinking on Study Habits - NYTimes.com - 1 views

www.nytimes.com/...07mind.html

learning cognition neuroscience education testing psychology

shared by Ed Webb on 06 Sep 10 - No Cached
  • instead of sticking to one study location, simply alternating the room where a person studies improves retention. So does studying distinct but related skills or concepts in one sitting, rather than focusing intensely on a single thing. “We have known these principles for some time, and it’s intriguing that schools don’t pick them up, or that people don’t learn them by trial and error,” said Robert A. Bjork, a psychologist at the University of California, Los Angeles. “Instead, we walk around with all sorts of unexamined beliefs about what works that are mistaken.”
  • The brain makes subtle associations between what it is studying and the background sensations it has at the time, the authors say, regardless of whether those perceptions are conscious. It colors the terms of the Versailles Treaty with the wasted fluorescent glow of the dorm study room, say; or the elements of the Marshall Plan with the jade-curtain shade of the willow tree in the backyard. Forcing the brain to make multiple associations with the same material may, in effect, give that information more neural scaffolding.
  • Cognitive scientists do not deny that honest-to-goodness cramming can lead to a better grade on a given exam. But hurriedly jam-packing a brain is akin to speed-packing a cheap suitcase, as most students quickly learn — it holds its new load for a while, then most everything falls out. “With many students, it’s not like they can’t remember the material” when they move to a more advanced class, said Henry L. Roediger III, a psychologist at Washington University in St. Louis. “It’s like they’ve never seen it before.”
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  • An hour of study tonight, an hour on the weekend, another session a week from now: such so-called spacing improves later recall, without requiring students to put in more overall study effort or pay more attention, dozens of studies have found.
  • “The idea is that forgetting is the friend of learning,” said Dr. Kornell. “When you forget something, it allows you to relearn, and do so effectively, the next time you see it.”
  • cognitive scientists see testing itself — or practice tests and quizzes — as a powerful tool of learning, rather than merely assessment. The process of retrieving an idea is not like pulling a book from a shelf; it seems to fundamentally alter the way the information is subsequently stored, making it far more accessible in the future.
  • “Testing not only measures knowledge but changes it,” he says — and, happily, in the direction of more certainty, not less.
  • “Testing has such bad connotation; people think of standardized testing or teaching to the test,” Dr. Roediger said. “Maybe we need to call it something else, but this is one of the most powerful learning tools we have.”
  • The harder it is to remember something, the harder it is to later forget. This effect, which researchers call “desirable difficulty,”
Ed Webb

M.I.T. Lets Student Bloggers Post Without Censoring - NYTimes.com - 0 views

www.nytimes.com/...02blogs.html

bloggers blogging education MIT admissions

shared by Ed Webb on 02 Oct 09 - Cached
  • M.I.T.’s bloggers, who are paid $10 an hour for up to four hours a week, offer thoughts on anything that might interest a prospective student.
  • “High school students read the blogs, and they come in and say ‘I can’t believe Haverford students get to do such interesting things with their summers,’ ” he said. “There’s no better way for students to learn about a college than from other students.”
  • “We saw very quickly that prospective students were engaging with each other and building their own community,”
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  • annual “Meet the Bloggers” session at Campus Preview Weekend.
  • “The annual blogger selection is like the admissions office’s own running of the bulls,”
  • Ms. Kim once wrote about how the resident advising system was making it impossible for her to move out of her housing — expressing enough irritation that the housing office requested that the admissions office take her post down. Officials refused, instead having the housing office post a rebuttal of her accusations; eventually, the system was changed.
Ed Webb

Op-Ed Contributor - Lost in the Cloud - NYTimes.com - 0 views

www.nytimes.com/...20zittrain.html

tools cloud cloudcomputing innovation law

shared by Ed Webb on 20 Jul 09 - Cached
  • the most difficult challenge — both to grasp and to solve — of the cloud is its effect on our freedom to innovate.
  • Apple can decide who gets to write code for your phone and which of those offerings will be allowed to run. The company has used this power in ways that Bill Gates never dreamed of when he was the king of Windows: Apple is reported to have censored e-book apps that contain controversial content, eliminated games with political overtones, and blocked uses for the phone that compete with the company’s products. The market is churning through these issues. Amazon is offering a generic cloud-computing infrastructure so anyone can set up new software on a new Web site without gatekeeping by the likes of Facebook. Google’s Android platform is being used in a new generation of mobile phones with fewer restrictions on outside code. But the dynamics here are complicated. When we vest our activities and identities in one place in the cloud, it takes a lot of dissatisfaction for us to move. And many software developers who once would have been writing whatever they wanted for PCs are simply developing less adventurous, less subversive, less game-changing code under the watchful eyes of Facebook and Apple.
Ed Webb

Open-Xchange Tries To Liberate Your Contact List - Bits Blog - NYTimes.com - 0 views

bits.blogs.nytimes.com/...-to-liberate-your-contact-list

web2.0 services contacts aggregation privacy

shared by Ed Webb on 05 Aug 09 - Cached
  • the idea that separating more personal services like Facebook from business-oriented services like LinkedIn makes little sense in the Internet age.
  • All you have to do is enter your LinkedIn login information
  • “The revolution is that, all of a sudden, the Internet can be a network of intelligent agents, doing work for their users, rather than a place where big commercial interests aim to gather as many users on their platform as possible,”
Ed Webb

The powerful and mysterious brain circuitry that makes us love Google, Twitter, and tex... - 0 views

www.slate.com/...all

twitter neuroscience brain yoffe internet socialmedia addiction

shared by Ed Webb on 14 Aug 09 - Cached
  • For humans, this desire to search is not just about fulfilling our physical needs. Panksepp says that humans can get just as excited about abstract rewards as tangible ones. He says that when we get thrilled about the world of ideas, about making intellectual connections, about divining meaning, it is the seeking circuits that are firing.
  • Our internal sense of time is believed to be controlled by the dopamine system. People with hyperactivity disorder have a shortage of dopamine in their brains, which a recent study suggests may be at the root of the problem. For them even small stretches of time seem to drag.
  • When we get the object of our desire (be it a Twinkie or a sexual partner), we engage in consummatory acts that Panksepp says reduce arousal in the brain and temporarily, at least, inhibit our urge to seek.
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  • But our brains are designed to more easily be stimulated than satisfied. "The brain seems to be more stingy with mechanisms for pleasure than for desire," Berridge has said. This makes evolutionary sense. Creatures that lack motivation, that find it easy to slip into oblivious rapture, are likely to lead short (if happy) lives. So nature imbued us with an unquenchable drive to discover, to explore. Stanford University neuroscientist Brian Knutson has been putting people in MRI scanners and looking inside their brains as they play an investing game. He has consistently found that the pictures inside our skulls show that the possibility of a payoff is much more stimulating than actually getting one.
  • all our electronic communication devices—e-mail, Facebook feeds, texts, Twitter—are feeding the same drive as our searches. Since we're restless, easily bored creatures, our gadgets give us in abundance qualities the seeking/wanting system finds particularly exciting. Novelty is one. Panksepp says the dopamine system is activated by finding something unexpected or by the anticipation of something new. If the rewards come unpredictably—as e-mail, texts, updates do—we get even more carried away. No wonder we call it a "CrackBerry."
  • If humans are seeking machines, we've now created the perfect machines to allow us to seek endlessly. This perhaps should make us cautious. In Animals in Translation, Temple Grandin writes of driving two indoor cats crazy by flicking a laser pointer around the room. They wouldn't stop stalking and pouncing on this ungraspable dot of light—their dopamine system pumping. She writes that no wild cat would indulge in such useless behavior: "A cat wants to catch the mouse, not chase it in circles forever." She says "mindless chasing" makes an animal less likely to meet its real needs "because it short-circuits intelligent stalking behavior." As we chase after flickering bits of information, it's a salutary warning.
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