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Javier E

Crowd-Sourcing Brain Research Leads to Breakthrough - NYTimes.com - 0 views

  • these guys finally did what needed to be done to take a real stab at merging imaging and genomics
  • Brain imaging studies are expensive and, as a result, far too small to reliably tease out the effects of common gene variations. These effects tend to be tiny, for one thing, and difficult to distinguish from the background “noise” of other influences. And brain imaging is notoriously noisy: not only does overall brain size vary from person to person, for instance, but so do the sizes of specialized brain regions like the hippocampus, which is critical for memory formation.
  • persuaded research centers around the world to pool their resources and create one large database. It included genetic and extensive brain imaging results from about 21,000 people. The team then analyzed the collective data to see whether any genes were linked to brain structure.
Javier E

History News Network | History Gets Into Bed with Psychology, and It's a Happy Match - 0 views

  • The fact that many of our self-protective delusions are built into the way the brain works is no justification for not trying to override them. Knowing how dissonance works helps us identify our own inclinations to perpetuate errors -- and protect ourselves from those who can’t. Or won’t.Related LinksWhat Historians Can Learn from the Social Sciences and Sciences /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */ var disqus_shortname = 'hnndev'; // required: replace example with your forum shortname /* * * DON'T EDIT BELOW THIS LINE * * */ (function() { var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true; dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js'; (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq); })(); Please enable JavaScript to view the comments powered by Disqus. News Breaking News Historians DC Breaking News Historians DC ‘Scottsboro Boys’ pardoned in Alabama ‘November 22, 1963’ U-Boat discovered off the coast of Indonesia Vatican publicly unveils bone fragments said to belong to St. Peter Pictured: the 'real site' of the Hanging Gardens of Babylon Historian: Taiwan can use WWII legacy to improve standing with China 'I Take Long Walks': The Emotional Lives of Holocaust Scholars Chinese historian: Xi Jinping a master of "neo-authoritarianism" History Comes to Life With Tweets From Past Celtic Paths, Illuminated by a Sundial try{for(var lastpass_iter=0; lastpass_iter < document.forms.length; lastpass_iter++){ var lastpass_f = document.forms[lastpass_iter]; if(typeof(lastpass_f.lpsubmitorig2)=="undefined"){ lastpass_f.lpsubmitorig2 = lastpass_f.submit; lastpass_f.submit = function(){ var form=this; var customEvent = document.createEvent("Event"); customEvent.initEvent("lpCustomEvent", true, true); var d = document.getElementById("hiddenlpsubmitdiv"); for(var i = 0; i < document.forms.length; i++){ if(document.forms[i]==form){ d.innerText=i; } } d.dispatchEvent(customEvent); form.lpsubmitorig2(); } } }}catch(e){}
  • at last, history has gotten into bed with psychological science, and it’s a happy match. History gives us the data of, in Barbara Tuchman’s splendid words, our march of folly -- repeated examples of human beings unable and unwilling to learn from mistakes, let alone to admit them. Cognitive science shows us why
  • Our brains, which have allowed us to travel into outer space, have a whole bunch of design flaws, which is why we have so much breathtaking bumbling here on Earth.
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  • Of the many built-in biases in human thought, three have perhaps the greatest consequences for our own history and that of nations: the belief that we see things as they really are, rather than as we wish them to be; the belief that we are better, kinder, smarter, and more ethical than average; and the confirmation bias, which sees to it that we notice, remember, and accept information that confirms our beliefs -- and overlook, forget, and discount information that disconfirms our beliefs.
  • The great motivational theory that accommodates all of these biases is cognitive dissonance, developed by Leon Festinger in 1957 and further refined and transformed into a theory of self-justification by his student (and later my coauthor and friend) Elliot Aronson. The need to reduce dissonance is the key mechanism that underlies the reluctance to be wrong, to change our minds, to admit serious mistakes, and to be unwilling to accept unwelcome information
  • The greater the dissonance between who we are and the mistake we made or the cruelty we committed, the greater the need to justify the mistake, the crime, the villainy, instead of admitting and rectifying it
carolinewren

Shady Science: How the Brain Remembers Colors - 0 views

  • When you bring home the wrong color of paint from the hardware store, it may not be your foggy memory at fault
  • Flombaum and his colleagues conducted four experiments on four different groups of people.
  • while the human brain can distinguish between millions of colors, it has difficulty remembering specific shades.
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  • The exercise was designed to find the perceived boundaries between colors, the researchers said
  • scientists showed different people the same colors, but this time they asked them to find the "best example" of a particular color.
  • researchers showed participants colored squares, and asked them to select the best match on the color wheel. In a fourth experiment, another group of participants completed the same task, but there was a delay of 90 milliseconds between when each color square was displayed and when they were asked to select the best match on the color wheel.
  • This tendency to lump colors together could explain why it's so hard to match the color of house paint based on memory alone, the researchers said
  • categories are indeed important in how people identify and remember colors.
  • participants who were asked to name the colors reliably saw five hues: blue, yellow, pink, purple and green
  • "Where that fuzzy naming happened, those are the boundaries"
dpittenger

Pharmaceutical pricing: Crippling | The Economist - 0 views

  • insurers low-balled their prices in the early days of the Affordable Care Act in order to gain market share. But there is another reason: higher&nbsp;drug prices.&nbsp;Prescription drug spending increased 13.1% in 2015
  • ASCO dryly remarked that she could find no economic theory to explain how companies price their drugs.&nbsp;
  • First, pharmaceutical companies can advertise directly to patients in America, which helps ensure demand. Second, price increases have been largely invisible to both patients and their doctors, in part because health-insurance plans often shield buyers from the true costs of their drugs. Third, Medicare, the public-health programme for those aged 65 and older,&nbsp;is the country’s largest drug customer, yet it is not allowed to negotiate prices with drug companies—with predictable results.&nbsp; The new drugs war
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  • Companies that are forced to pay higher health-insurance premiums for their workers are less inclined to raise salaries, says Steve Miller, the chief medical officer of Express Scripts, a company that manages drug benefits for insurers.
Keiko E

Is This the Future of Punctuation!? - WSJ.com - 1 views

  • Punctuation arouses strong feelings. You have probably come across the pen-wielding vigilantes who skulk around defacing movie posters and amending handwritten signs that advertise "Rest Room's" or "Puppy's For Sale." People fuss about punctuation not only because it clarifies meaning but also because its neglect appears to reflect wider social decline. And while the big social battles seem intractable, smaller battles over the use of the apostrophe feel like they can be won. Enlarge ImageClose Yet the status of this and other cherished marks has long been precarious. The story of punctuation is one of comings and goings.
  • How might punctuation now evolve? The dystopian view is that it will vanish. I find this conceivable, though not likely. But we can see harbingers of such change: editorial austerity with commas, the newsroom preference for the period over all other marks, and the taste for visual crispness. Though it is not unusual to hear calls for new punctuation, the marks proposed tend to cannibalize existing ones. In this vein, you may have encountered the interrobang , which signals excited disbelief. Such marks are symptoms of an increasing tendency to punctuate for rhetorical rather than grammatical effect. Instead of presenting syntactical and logical relationships, punctuation reproduces the patterns of speech.
  • Defenders of the apostrophe insist that it minimizes ambiguity, but there are few situations in which its omission can lead to real misunderstanding.
Javier E

The 3-Word Tweet That Cost a Politician Her Job - The Atlantic - 2 views

  • To the uninitiated, the Twitter message looks utterly banal and harmless: an image of a white van parked in a driveway under a flag-draped window, with pretty much the most straightforward description imaginable: "Image from #Rochester."
  • The subtext of this story is social class.
  • "Best explanation for my fellow Americans—a Congresswoman from Massachusetts sending a picture from South Carolina of a pickup truck with a shotgun rack sitting in front of a mobile home draped in the confederate (Stars and Bars) flag," one commenter offered. "Maybe add a car up on cinder blocks sitting in the yard."
kushnerha

The Words That Killed Medieval Jews - The New York Times - 0 views

  • DO harsh words lead to violent acts? At a moment when hate speech seems to be proliferating, it’s a question worth asking.
  • worry that heated anti-Muslim political rhetoric would spark an increase in attacks against Muslims.
  • Some claim that last month’s mass shooting in Colorado Springs was provoked by Carly Fiorina’s assertion that Planned Parenthood was “harvesting baby parts”; Mrs. Fiorina countered that language could not be held responsible for the deeds of a “deranged” man.
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  • beating of a homeless Hispanic man in Boston, allegedly inspired by Donald J. Trump’s anti-immigration rhetoric, and by the shooting deaths of police officers in California, Texas and Illinois, which some have attributed to anti-police sentiment expressed at Black Lives Matter protests.
  • history does show that a heightening of rhetoric against a certain group can incite violence against that group, even when no violence is called for. When a group is labeled hostile and brutal, its members are more likely to be treated with hostility and brutality. Visual images are particularly powerful, spurring actions that may well be unintended by the images’ creators.
  • Official Christian theology and policy toward Jews remained largely unchanged in the Middle Ages. Over roughly 1,000 years, Christianity condemned the major tenets of Judaism and held “the Jews” responsible for the death of Jesus. But the terms in which these ideas were expressed changed radically.
  • Before about 1100, Christian devotions focused on Christ’s divine nature and triumph over death. Images of the crucifixion showed Jesus alive and healthy on the cross. For this reason, his killers were not major focuses in Christian thought. No anti-Jewish polemics were composed during these centuries
  • In an effort to spur compassion among Christian worshipers, preachers and artists began to dwell in vivid detail on Christ’s pain. Christ morphed from triumphant divine judge to suffering human savior. A parallel tactic, designed to foster a sense of Christian unity, was to emphasize the cruelty of his supposed tormentors, the Jews.
  • The “Goad of Love,” a retelling of the crucifixion that is considered the first anti-Jewish Passion treatise, was written around 1155-80. It describes Jews as consumed with sadism and blood lust. They were seen as enemies not only of Christ, but also of living Christians; it was at this time that Jews began to be accused of ritually sacrificing Christian children.
  • Ferocious anti-Jewish rhetoric began to permeate sermons, plays and polemical texts. Jews were labeled demonic and greedy. In one diatribe, the head of the most influential monastery in Christendom thundered at the Jews: “Why are you not called brute animals? Why not beasts?” Images began to portray Jews as hooknosed caricatures of evil.
  • the First Crusade had called only for an “armed pilgrimage” to retake Jerusalem from Muslims, the first victims of the Crusade were not the Turkish rulers of Jerusalem but Jewish residents of the German Rhineland. Contemporary accounts record the crusaders asking why, if they were traveling to a distant land to “kill and to subjugate all those kingdoms that do not believe in the Crucified,” they should not also attack “the Jews, who killed and crucified him?”
  • At no point did Christian authorities promote or consent to the violence. Christian theology, which applied the Psalm verse “Slay them not” to Jews, and insisted that Jews were not to be killed for their religion, had not changed. Clerics were at a loss to explain the attacks. A churchman from a nearby town attributed the massacres to “some error of mind.”
  • But not all the Rhineland killers were crazy. The crusaders set out in the Easter season. Both crusade and Easter preaching stirred up rage about the crucifixion and fear of hostile and threatening enemies.
  • Sometimes the perpetrators were zealous holy warriors, sometimes they were opportunistic business rivals, sometimes they were parents grieving for children lost to accident or crime, or fearful of the ravages of a new disease.
  • Some may well have been insane. But sane or deranged, they did not pick their victims in a vacuum. It was repeated and dehumanizing excoriation that led those medieval Christians to attack people who had long been their neighbors.
katedriscoll

Functional magnetic resonance imaging | Journal of Neurology, Neurosurgery & Psychiatry - 0 views

shared by katedriscoll on 03 Nov 20 - No Cached
  • A variety of methods have been developed over the past few decades to allow mapping of the functioning human brain. Two basic classes of mapping technique have evolved: those that map (or localise) the underlying electrical activity of the brain; and those that map local physiological or metabolic consequences of altered brain electrical activity. Among the former are the non-invasive neural electromagnetic techniques of electroencephalography (EEG) and magnetoencephalography (MEG). These methods allow exquisite temporal resolution of neural processes (typically over a 10–100 ms time scale), but suffer from poor spatial resolution (between 1 and several centimetres). Functional MRI (fMRI) methods are in the second category. They can be made sensitive to the changes in regional blood perfusion, blood volume (for example, using injected magnetic resonance contrast agents), or blood oxygenation that accompany neuronal activity. Blood oxygenation level dependent (BOLD) fMRI, which is sensitive primarily to the last of these variables, allows an image spatial resolution that is of the order of a few millimetres, with a temporal resolution of a few seconds (limited by the haemodynamic response itself). An accessible and more detailed introduction to the technique than is possible in this brief review is found in a recent book.1
  • Methods such as positron emission tomography (PET) provide an absolute measure of tissue metabolism. In contrast, BOLD fMRI can at present be used only for determining relative signal intensity changes associated with different cognitive states during a single imaging session. The most time efficient approach for comparing brain responses in different states during the imaging experiment is the “block” design19 (fig 3). This design uses relatively long alternating periods (for example, 30 seconds), during each of which a discrete cognitive state is maintained. In the simplest form, there may only be two such states, which are alternated throughout the experiment in order to ensure that variations arising from fluctuations in scanner sensitivity, patient movement, or changes in attention have a similar impact on the signal responses associated with both states.
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    In TOK we talked about an experiment that used fMRI, so I thought this article was very interesting in understanding fMRI in a more broader context.
caelengrubb

Why Do People Believe in Conspiracy Theories? | Psychology Today - 0 views

  • The researchers found that reasons for believing in conspiracy theories can be grouped into three categories: The desire for understanding and certainty The desire for control and security The desire to maintain a positive self-image
  • Seeking explanations for events is a natural human desire
  • We all harbor false beliefs, that is, things we believe to be true but in fact are not.
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  • After all, you were simply misinformed, and you’re not emotionally invested in it.
  • Conspiracy theories are also false beliefs, by definition. But people who believe in them have a vested interest in maintaining them
  • People need to feel they’re in control of their lives
  • conspiracy theories can give their believers a sense of control and security. This is especially true when the alternative account feels threatening.
  • Research shows that people who feel socially marginalized are more likely to believe in conspiracy theories. We all have a desire to maintain a positive self-image, which usually comes from the roles we play in life—our jobs and our relationships with family and friends
  • Most people who believe global warming is real or that vaccines are safe don’t do so because they understand the science. Rather, they trust the experts
  • we have a good understanding of what motivates people to believe in conspiracy theories. That is, they do so because of three basic needs we all have: to understand the world around us, to feel secure and in control, and to maintain a positive self-image.
Javier E

Ad About Women's Self-Image Creates a Sensation - NYTimes.com - 0 views

  • An online video, presented in three- and six-minute versions, shows a forensic sketch artist who is asked to draw a series of women based only on their descriptions. Seated at a drafting table with his back to his subject, the artist, Gil Zamora, asks the women a series of questions about their features. “Tell me about your chin,” he says in the soft voice reminiscent of a therapist’s. Crow’s feet, big jaws, protruding chins and dark circles are just some of the many physical features that women criticized about themselves. After he finishes a drawing of a woman, he then draws another sketch of the same woman, only this time it is based on how someone else describes her. The sketches are then hung side by side and the women are asked to compare them. In every instance, the second sketch is more flattering than the first.
  • The video, shot in a loft in San Francisco, has become a sensation online. The three-minute version has been viewed more than 7.5 million times on the Dove YouTube channel, and the version that is twice as long has been viewed more than 936,000 times.
  • Dove executives said the campaign resulted from company research that showed only 4 percent of women consider themselves beautiful.
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  • “As women we are so hard on ourselves physically and emotionally,” Ms. Olive said. “It gets you to stop and think about how we think of ourselves.”
  • Ms. Brice took issue with the tag line for the ad, “You’re More Beautiful Than You Think.” “I think it makes people much more susceptible to absorbing the subconscious messages,” Ms. Brice said, “that at the heart of it all is that beauty is still what defines women. It is a little hypocritical.”
  • “What if I did look like that woman on the left?” she said, referring to the less flattering sketches of the women. “There are people that look like that.”
kushnerha

New Ways Into the Brain's 'Music Room' - The New York Times - 5 views

  • Every culture ever studied has been found to make music, and among the oldest artistic objects known are slender flutes carved from mammoth bone some 43,000 years ago — 24,000 years before the cave paintings of Lascaux.
  • And though the survival value that music held for our ancestors may not be as immediately obvious as the power to recognize words, Dr. Rauschecker added, “music works as a group cohesive. Music-making with other people in your tribe is a very ancient, human thing to do.”
  • devised a radical new approach to brain imaging that reveals what past studies had missed. By mathematically analyzing scans of the auditory cortex and grouping clusters of brain cells with similar activation patterns, the scientists have identified neural pathways that react almost exclusively to the sound of music — any music. It may be Bach, bluegrass, hip-hop, big band, sitar or Julie Andrews. A listener may relish the sampled genre or revile it. No matter. When a musical passage is played, a distinct set of neurons tucked inside a furrow of a listener’s auditory cortex will fire in response.Other sounds, by contrast — a dog barking, a car skidding, a toilet flushing — leave the musical circuits unmoved.
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  • “Why do we have music?” Dr. Kanwisher said in an interview. “Why do we enjoy it so much and want to dance when we hear it? How early in development can we see this sensitivity to music, and is it tunable with experience? These are the really cool first-order questions we can begin to address.”
  • Dr. McDermott said the new method could be used to computationally dissect any scans from a functional magnetic resonance imaging device, or F.M.R.I. — the trendy workhorse of contemporary neuroscience — and so may end up divulging other hidden gems of cortical specialization. As proof of principle, the researchers showed that their analytical protocol had detected a second neural pathway in the brain for which scientists already had evidence — this one tuned to the sounds of human speech.
  • Importantly, the M.I.T. team demonstrated that the speech and music circuits are in different parts of the brain’s sprawling auditory cortex, where all sound signals are interpreted, and that each is largely deaf to the other’s sonic cues, although there is some overlap when it comes to responding to songs with lyrics.
  • In fact, Dr. Rauschecker said, music sensitivity may be more fundamental to the human brain than is speech perception. “There are theories that music is older than speech or language,” he said. “Some even argue that speech evolved from music.”
  • , many researchers had long assumed that the human brain must be equipped with some sort of music room, a distinctive piece of cortical architecture dedicated to detecting and interpreting the dulcet signals of song. Yet for years, scientists failed to find any clear evidence of a music-specific domain through conventional brain-scanning technology
  • when previous neuroscientists failed to find any anatomically distinct music center in the brain, they came up with any number of rationales to explain the results.“The story was, oh, what’s special about music perception is how it recruits areas from all over the brain, how it draws on the motor system, speech circuitry, social understanding, and brings it all together,” she said. Some researchers dismissed music as “auditory cheesecake,” a pastime that co-opted other essential communicative urges. “This paper says, no, when you peer below the cruder level seen with some methodologies, you find very specific circuitry that responds to music over speech.”
  • The researchers wondered if the auditory system might be similarly organized to make sense of the soundscape through a categorical screen. If so, what would the salient categories be? What are the aural equivalents of a human face or a human leg — sounds or sound elements so essential the brain assigns a bit of gray matter to the task of detecting them?
  • Focusing on the brain’s auditory region — located, appropriately enough, in the temporal lobes right above the ears — the scientists analyzed voxels, or three-dimensional pixels, of the images mathematically to detect similar patterns of neuronal excitement or quietude.“The strength of our method is that it’s hypothesis-neutral,” Dr. McDermott said. “We just present a bunch of sounds and let the data do the talking.”
  • Matching sound clips to activation patterns, the researchers determined that four of the patterns were linked to general physical properties of sound, like pitch and frequency. The fifth traced the brain’s perception of speech, and for the sixth the data turned operatic, disclosing a neuronal hot spot in the major crevice, or sulcus, of the auditory cortex that attended to every music clip the researchers had played.
  • “The sound of a solo drummer, whistling, pop songs, rap, almost everything that has a musical quality to it, melodic or rhythmic, would activate it,” Dr. Norman-Haignere said. “That’s one reason the result surprised us. The signals of speech are so much more homogeneous.”
  • The researchers have yet to determine exactly which acoustic features of music stimulate its dedicated pathway. The relative constancy of a musical note’s pitch? Its harmonic overlays? Even saying what music is can be tricky.
julia rhodes

Dictators in the Age of Instagram : The New Yorker - 1 views

  • “So, you want to be a dictator?”
  • Too bad you’re living in this century. “It is tougher to lead an authoritarian regime in the face of democratic ideals, free speech and globalized media.
  • Snyderwine puts forth complex mathematical formulas that show a dictator how to stay in power with cost-benefit analyses of revolutions that take into account factors like bribes and the number of active revolutionaries killed.
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  • “The Dictator’s Practical Internet Guide to Power Retention,” is a compilation of tips, gleaned from the experiences of leaders in China, Singapore, Russia, Iran, Pakistan, and other countries, that illustrate just how brutal the modern, connected world can be for a tyrant.
  • Recep Tayyip Erdoğan, recently said that “this thing called social media is a curse on societies.”
  • n Syria, President Bashar al-Assad has proved canny online. Blackouts have shut down the Internet at various moments in the past two years
  • The state news agency blamed one blackout, in May, on “a malfunctioning fibre-optic cable,” but it was not lost on many that it was timed near a vote on a U.N. resolution on Syria.
  • Does it matter if this is a kind of misinformation? What does a social-media company do when a user known to be attacking civilians is blasting out feel-good content?
  • But she explained that, generally speaking, if a user created content that promoted violence, Instagram would remove it and possibly disable the user. Schumer stressed the importance of the context of the image in making those calls—a caption might make an image threatening, for instance—but also said that “context” is generally limited to content on the site.
  • And yet, even within that complex framework, what does it mean to follow a man strongly suggested to be a war criminal, to have a virtual shrine to a dictators’ glory that can fit in our pockets?
Javier E

New Statesman - The Joy of Secularism: 11 Essays for How We Live Now - 0 views

  • Art &amp; Design Books Film Ideas Music &amp; Performance TV &amp; Radio Food &amp; Drink Blog Return to: Home | Culture | Books The Joy of Secularism: 11 Essays for How We Live Now By George Levine Reviewed by Terry Eagleton - 22 June 2011 82 comments Print version Email a friend Listen RSS Misunderstanding what it means to be secular.
  • Societies become truly secular not when they dispense with religion but when they are no longer greatly agitated by it. It is when religious faith ceases to be a vital part of the public sphere
  • Christianity is certainly other-worldly, and so is any reasonably sensitive soul who has been reading the newspapers. The Christian gospel looks to a future transformation of the appalling mess we see around us into a community of justice and friendship, a change so deep-seated and indescribable as to make Lenin look like a Lib Dem.“This [world] is our home," Levine comments. If he really feels at home in this crucifying set-up, one might humbly suggest that he shouldn't. Christians and political radicals certainly don't.
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  • he suspects that Christian faith is other-worldly in the sense of despising material things. Material reality, in his view, is what art celebrates but religion does not. This is to forget that Gerard Manley Hopkins was a Jesuit. It is also to misunderstand the doctrine of Creation
  • Adam Phillips writes suggestively of human helplessness as opposed to the sense of protectedness that religious faith supposedly brings us, without noticing that the signifier of God for the New Testament is the tortured and executed corpse of a suspected political criminal.
  • None of these writers points out that if Christianity is true, then it is all up with us. We would then have to face the deeply disagreeable truth that the only authentic life is one that springs from a self-dispossession so extreme that it is probably beyond our power.
  • Secularisation is a lot harder than people tend to imagine. The history of modernity is, among other things, the history of substitutes for God. Art, culture, nation, Geist, humanity, society: all these, along with a clutch of other hopeful aspirants, have been tried from time to time. The most successful candidate currently on offer is sport, which, short of providing funeral rites for its spectators, fulfils almost every religious function in the book.
  • The Christian paradigm of love, by contrast, is the love of strangers and enemies, not of those we find agreeable. Civilised notions such as mutual sympathy, more's the pity, won't deliver us the world we need.
  • What exactly," he enquires, "does the invocation of some supernatural being add?" A Christian might reply that it adds the obligations to give up everything one has, including one's life, if necessary, for the sake of others. And this, to say the least, is highly inconvenient.
  • If Friedrich Nietzsche was the first sincere atheist, it is because he saw that the Almighty is exceedingly good at disguising Himself as something else, and that much so-called secularisation is accordingly bogus.
  • Postmodernism is perhaps best seen as Nietzsche shorn of the metaphysical baggage. Whereas modernism is still haunted by a God-shaped absence, postmodern culture is too young to remember a time when men and women were anguished by the fading spectres of truth, reality, nature, value, meaning, foundations and the like. For postmodern theory, there never was any truth or meaning in the first place
  • Postmodernism is properly secular, but it pays an immense price for this coming of age - if coming of age it is. It means shelving all the other big questions, too, as hopelessly passé. It also involves the grave error of imagining that all faith or passionate conviction is inci­piently dogmatic. It is not only religious belief to which postmodernism is allergic, but belief as such. Advanced capitalism sees no need for the stuff. It is both politically divisive and commercially unnecessary.
Javier E

Disruptions: Internet's Sad Legacy: No More Secrets - NYTimes.com - 0 views

  • many services that claim to offer that rarest of digital commodities — privacy — don’t really deliver. Read the fine print.
  • Snapchat’s privacy page explains that private images are stored on someone’s phone — and on its own servers. “Forensically, even after they are deleted,” Snapchat says, those images can be retrieved. Whisper’s privacy page says the company owns the intellectual property, both images and text, that people post; Whisper reserves the right to sell that stuff to third parties. And Telegram, while seemingly less innocuous with its claims, nonetheless leaves out something you might want to know: someone can just take a screenshot or picture of that “private” conversation.
  • Don’t have a smartphone yet? They still know where you are and where you’ve been. The American Civil Liberties Union released a report this year that found that technologies that let governments scan license plates are being used to build databases of vehicle locations across the United States.
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  • A new book by Harvey Silverglate, a lawyer in Massachusetts, titled “Three Felonies a Day,” claims the average professional in the United States commits at least three crimes every day. How? While academics, lawyers and even government officials don’t actually know how many laws exist in today’s judicial system, it’s estimated that there are from 10,000 to 300,000 federal regulations that could be enforced criminally.
Javier E

What's Lost as Handwriting Fades - NYTimes.com - 3 views

  • Children who had not yet learned to read and write were presented with a letter or a shape on an index card and asked to reproduce it in one of three ways: trace the image on a page with a dotted outline, draw it on a blank white sheet, or type it on a computer. They were then placed in a brain scanner and shown the image again.
  • When children had drawn a letter freehand, they exhibited increased activity in three areas of the brain that are activated in adults when they read and write
  • By contrast, children who typed or traced the letter or shape showed no such effect. The activation was significantly weaker.
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  • Dr. James attributes the differences to the messiness inherent in free-form handwriting: Not only must we first plan and execute the action in a way that is not required when we have a traceable outline, but we are also likely to produce a result that is highly variable.
  • That variability may itself be a learning tool. “When a kid produces a messy letter,” Dr. James said, “that might help him learn it.”
  • printing, cursive writing, and typing on a keyboard are all associated with distinct and separate brain patterns — and each results in a distinct end product.
  • When the children composed text by hand, they not only consistently produced more words more quickly than they did on a keyboard, but expressed more ideas. And brain imaging in the oldest subjects suggested that the connection between writing and idea generation went even further. When these children were asked to come up with ideas for a composition, the ones with better handwriting exhibited greater neural activation in areas associated with working memory — and increased overall activation in the reading and writing networks.
  • In alexia, or impaired reading ability, some individuals who are unable to process print can still read cursive, and vice versa — suggesting that the two writing modes activate separate brain networks and engage more cognitive resources than would be the case with a single approach.
  • in both laboratory settings and real-world classrooms, students learn better when they take notes by hand than when they type on a keyboard. Contrary to earlier studies attributing the difference to the distracting effects of computers, the new research suggests that writing by hand allows the student to process a lecture’s contents and reframe it — a process of reflection and manipulation that can lead to better understanding and memory encoding.
  • “With handwriting, the very act of putting it down forces you to focus on what’s important,” he said. He added, after pausing to consider, “Maybe it helps you think better.”
Javier E

A Grimmer View of a Perpetually Distracted Race - NYTimes.com - 0 views

  • the new media flatter us with attention—with our own personal ring tones and media feeds. Everything is addressed to us.
  • the public sphere has hollowed out the private sphere. People no longer defend the solid, private domain that is one’s own from the onrush of images and sensation. Instead, the self becomes liquid, a series of presented images. “The harder one tries to experiment with successive tentative approaches and to laboriously patch up successive public images, the less likely seems the prospect of reaching the self-assurance and self-confidence whose promise triggered all those exertions.”
  • Contemporary life is moodiness, the immediate feeling of the moment. Experience no longer comes tinged with feeling; it comes as feeling and often, it seems, without regard to its cognitive and/or active content.”
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  • The modern person is not an individual, Conley wrote, but an “intravidual,” a person with “multiple selves competing for attention with his/her own mind, just as externally she or he is bombarded by multiple stimuli simultaneously.”
  • this social criticism does not describe &nbsp;a group being oppressed by others, but a society in which people are undermining themselves with scattershot attention.
qkirkpatrick

Babies' memory develops while napping: study | CTV News - 0 views

  • Babies' memory develops while napping: study For babies, the best time to learn something is right before a nap of at least 30 minutes, according to a new study. (ambrozinio/shuttersto
  • babies
  • Naps during the day of at least a half hour help infants retain new behaviors learned earlier, according to researchers from the University of Sheffield
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  • ambrozinio
  • e study, which is believed to be the first of its kind, researchers worked with 216 healthy babies between six and 12 months old.
  • To test their ability to retain newly learned behaviors, they taught them how to take the mitten off a hand puppet and gave them opportunities to repeat the skill after four hours had passed, and again after 24 hours had passed.
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    Babies' memory develop while napping. Connects with lesson on memory.
Emilio Ergueta

o1ucMtH.jpg (JPEG Image, 600 × 420 pixels) - 1 views

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    Image that deceives the mind into believing one thing, while proclaiming the other.
Javier E

Noam Chomsky on Where Artificial Intelligence Went Wrong - Yarden Katz - The Atlantic - 1 views

  • Skinner's approach stressed the historical associations between a stimulus and the animal's response -- an approach easily framed as a kind of empirical statistical analysis, predicting the future as a function of the past.
  • Chomsky's conception of language, on the other hand, stressed the complexity of internal representations, encoded in the genome, and their maturation in light of the right data into a sophisticated computational system, one that cannot be usefully broken down into a set of associations.
  • Chomsky acknowledged that the statistical approach might have practical value, just as in the example of a useful search engine, and is enabled by the advent of fast computers capable of processing massive data. But as far as a science goes, Chomsky would argue it is inadequate, or more harshly, kind of shallow
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  • David Marr, a neuroscientist colleague of Chomsky's at MIT, defined a general framework for studying complex biological systems (like the brain) in his influential book Vision,
  • a complex biological system can be understood at three distinct levels. The first level ("computational level") describes the input and output to the system, which define the task the system is performing. In the case of the visual system, the input might be the image projected on our retina and the output might our brain's identification of the objects present in the image we had observed. The second level ("algorithmic level") describes the procedure by which an input is converted to an output, i.e. how the image on our retina can be processed to achieve the task described by the computational level. Finally, the third level ("implementation level") describes how our own biological hardware of cells implements the procedure described by the algorithmic level.
  • The emphasis here is on the internal structure of the system that enables it to perform a task, rather than on external association between past behavior of the system and the environment. The goal is to dig into the "black box" that drives the system and describe its inner workings, much like how a computer scientist would explain how a cleverly designed piece of software works and how it can be executed on a desktop computer.
  • As written today, the history of cognitive science is a story of the unequivocal triumph of an essentially Chomskyian approach over Skinner's behaviorist paradigm -- an achievement commonly referred to as the "cognitive revolution,"
  • While this may be a relatively accurate depiction in cognitive science and psychology, behaviorist thinking is far from dead in related disciplines. Behaviorist experimental paradigms and associationist explanations for animal behavior are used routinely by neuroscientists
  • Chomsky critiqued the field of AI for adopting an approach reminiscent of behaviorism, except in more modern, computationally sophisticated form. Chomsky argued that the field's heavy use of statistical techniques to pick regularities in masses of data is unlikely to yield the explanatory insight that science ought to offer. For Chomsky, the "new AI" -- focused on using statistical learning techniques to better mine and predict data -- is unlikely to yield general principles about the nature of intelligent beings or about cognition.
  • Behaviorist principles of associations could not explain the richness of linguistic knowledge, our endlessly creative use of it, or how quickly children acquire it with only minimal and imperfect exposure to language presented by their environment.
  • it has been argued in my view rather plausibly, though neuroscientists don't like it -- that neuroscience for the last couple hundred years has been on the wrong track.
  • Implicit in this endeavor is the assumption that with enough sophisticated statistical tools and a large enough collection of data, signals of interest can be weeded it out from the noise in large and poorly understood biological systems.
  • Brenner, a contemporary of Chomsky who also participated in the same symposium on AI, was equally skeptical about new systems approaches to understanding the brain. When describing an up-and-coming systems approach to mapping brain circuits called Connectomics, which seeks to map the wiring of all neurons in the brain (i.e. diagramming which nerve cells are connected to others), Brenner called it a "form of insanity."
  • These debates raise an old and general question in the philosophy of science: What makes a satisfying scientific theory or explanation, and how ought success be defined for science?
  • Ever since Isaiah Berlin's famous essay, it has become a favorite pastime of academics to place various thinkers and scientists on the "Hedgehog-Fox" continuum: the Hedgehog, a meticulous and specialized worker, driven by incremental progress in a clearly defined field versus the Fox, a flashier, ideas-driven thinker who jumps from question to question, ignoring field boundaries and applying his or her skills where they seem applicable.
  • Chomsky's work has had tremendous influence on a variety of fields outside his own, including computer science and philosophy, and he has not shied away from discussing and critiquing the influence of these ideas, making him a particularly interesting person to interview.
  • If you take a look at the progress of science, the sciences are kind of a continuum, but they're broken up into fields. The greatest progress is in the sciences that study the simplest systems. So take, say physics -- greatest progress there. But one of the reasons is that the physicists have an advantage that no other branch of sciences has. If something gets too complicated, they hand it to someone else.
  • If a molecule is too big, you give it to the chemists. The chemists, for them, if the molecule is too big or the system gets too big, you give it to the biologists. And if it gets too big for them, they give it to the psychologists, and finally it ends up in the hands of the literary critic, and so on.
  • An unlikely pair, systems biology and artificial intelligence both face the same fundamental task of reverse-engineering a highly complex system whose inner workings are largely a mystery
  • neuroscience developed kind of enthralled to associationism and related views of the way humans and animals work. And as a result they've been looking for things that have the properties of associationist psychology.
Javier E

Anxiety and Depression Are on an 80-Year Upswing -- Science of Us - 1 views

  • Ever since the 1930s, young people in America have reported feeling increasingly anxious and depressed. And no one knows exactly why.One of the researchers who has done the most work on this subject is Dr. Jean Twenge, a social psychologist at San Diego State University who is the author of Generation Me: Why Today’s Young Americans Are More Confident, Assertive, Entitled—and More Miserable Than Ever Before. She’s published a handful of articles on this trajectory, and the underlying story, she thinks, is a rather negative one. “I think the research tells us that modern life is not good for mental health,” she said.
  • The words “depression” and “anxiety” themselves, after all, mean very different things to someone asked about them in 1935 as compared to 1995, so surveys that invoke these concepts directly only have limited utility for longitudinal study. To get around this, Twenge prefers to rely on surveys and inventories in which respondents are asked about specific symptoms which are frequently correlated with anxiety and depression
  • Much of the richest data on this question, then, comes from the Minnesota Multiphasic Personality Inventory (MMPI), which has been administered to high school and college students since the 1930s — and which includes many questions about symptoms. Specifically, it asks — among many other things — whether respondents feel well-rested when they wake up, whether they have trouble thinking, and whether they have experienced dizzy spells, headaches, shortness of breath, a racing heart, and so on.
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  • The trendlines are obvious: Asked the same questions at about the same points in their lives, Americans are, over time, experiencing worse and worse symptoms associated with anxiety and&nbsp;depression.
  • there’s an interesting recent wrinkle to this trajectory. In a paper published in 2014 in Social Indicators Research, Twenge tracked the results of the Monitoring the Future (MtF) survey, “a nationally representative sample of U.S. 12th graders [administered] every year since 1976,” between 1982 and 2013. Like the MMPI, the MtF asks students about symptoms in a manner that should be generally resistant to cultural change: The somatic items Twenge examined asked about trouble sleeping, remembering things, thinking/concentrating, and learning, as well as shortness of breath. An interesting recent pattern emerged on these measures:
  • All the items end up significantly higher than where they started, but for many of them most of the increase happens over the first half of the time period in question. From the late 1990s or so until 2013, many of the items bounce around a bit but ultimately remain flat, or&nbsp;flat-ish.
  • drugs — Prozac and Lexapro, among others — have been prescribed to millions of people who experience these symptoms, many of whom presumably saw some improvement once the drugs kicked in, so this explanation at least makes intuitive sens
  • there are likely other factors leading to the plateau as well, said Twenge. For one thing, the “crime rate is lower [today] than it was when it peaked in the early 1990s,” and dealing with crime can lead to anxiety and depression symptoms. Other indicators of youth well-being, like teen pregnancy, were also significantly higher back then, and could have accounted for the trajectory visible on the graphs.“For whatever reason,” said Twenge, “if you look at what was going on back then, the early 1990s were not a good time, particularly for young&nbsp;people.”
  • “Obviously there’s a lot of good things about societal and technological progress,” she said, “and in a lot of ways our lives are much easier than, say, our grandparents’ or great-grandparents’ lives. But there’s a paradox here that we seem to have so much ease and relative economic prosperity compared to previous centuries, yet there’s this dissatisfaction, there’s this unhappiness, there are these mental health issues in terms of depression and anxiety.
  • She thinks the primary problem is that “modern life doesn’t give us as many opportunities to spend time with people and connect with them, at least in person, compared to, say, 80 years ago or 100 years ago. Families are smaller, the divorce rate is higher, people get married much later in life.”
  • it may simply be the case that many people who lived in less equal, more “traditional” times were forced into close companionship with a lot of other people, and that this shielded them from certain psychological problems, whatever else was going on in their lives.
  • She was virtually never alone — and that can be a bad thing, clearly, but from a mental health perspective being surrounded by people is a good thing.”
  • the shift away from this sort of life has also brought with it a shift in values, and Twenge thinks that this, too, can account for the increase in anxiety and depression. “There’s clear evidence that the focus on money, fame, and image has gone up,
  • “and there’s also clear evidence that people who focus on money, fame, and image are more likely to be depressed and anxious.”
  • “It’s so tempting to say the world is going to hell in a handbasket and everything’s bad, but there are so many good things about modern life,” she said. So maybe the key message here is that while there’s no way to go back to family farms and young marriage and parenthood — and, from an equality standpoint,we wouldn’t want to anyway — modern life needs to do a better job of connecting people to one another, and encouraging them to adopt the sorts of goals and outlooks that will make them happy.
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