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Javier E

Male Stock Analysts With 'Dominant' Faces Get More Information-and Have Better Forecast... - 0 views

  • “People form impressions after extremely brief exposure to faces—within a hundred milliseconds,” says Alexander Todorov, a behavioral-science professor at the University of Chicago Booth School of Business. “They take actions based on those impressions,”
  • . Under most circumstances, such quick impressions aren’t accurate and shouldn’t be trusted, he says.
  • Prof. Teoh and her fellow researchers analyzed the facial traits of nearly 800 U.S. sell-side stock financial analysts working between January 1990 and December 2017 who also had a LinkedIn profile photo as of 2018. They pulled their sample of analysts from Thomson Reuters and the firms they covered from the merged Center for Research in Security Prices and Compustat, a database of financial, statistical and market information
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  • The researchers used facial-recognition software to map out specific points on a person’s face, then applied machine-learning algorithms to the facial points to obtain empirical measures for three key face impressions—trustworthiness, dominance and attractiveness.  
  • They examined the association of these impressions with the accuracy of analysts’ quarterly forecasts, drawn from the Institutional Brokers Estimate System
  • Analyst accuracy was determined by comparing each analyst’s prediction error—the difference between their prediction and the actual earnings—with that of all analysts for that same company and quarter.
  • For an average stock valued at $100, Prof. Teoh says, analysts ranked as looking most trustworthy were 25 cents more accurate in earnings-per-share forecasts than the analysts who were ranked as looking least trustworthy
  • Similarly, most-dominant-looking analysts were 52 cents more accurate in their EPS forecast than least-dominant-looking analysts.
  • The relation between a dominant face and accuracy, meanwhile, was significant before and after the regulation was enacted, the analysts say. This suggests that dominant-looking male analysts are always able to obtain information,
  • While forecasts of female analysts regardless of facial characteristics were on average more accurate than those of their male counterparts, the forecasts of women who were seen as more-dominant-looking were significantly less accurate than their male counterparts.  
  • Says Prof. Todorov: “Women who look dominant are more likely to be viewed negatively because it goes against the cultural stereotype.
Javier E

Why Our Memory Fails Us - NYTimes.com - 1 views

  • how we all usually respond when our memory is challenged. We have an abstract understanding that people can remember the same event differently.
  • But when our own memories are challenged, we may neglect all this and instead respond emotionally, acting as though we must be right and everyone else must be wrong.
  • It’s no accident that Oprah Winfrey’s latest best seller is called “What I Know For Sure,” rather than “Some Things That Might Be True.”
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  • Our lack of appreciation for the fallibility of our own memories can lead to much bigger problems than a misattributed quote.
  • Memory failures that resemble Dr. Tyson’s mash-up of distinct experiences have led to false convictions, and even death sentences. Whose memories we believe and whose we disbelieve influence how we interpret controversial public events, as demonstrated most recently by the events in Ferguson, Mo.
  • , for false memories, higher confidence was associated with lower accuracy.
  • In general, if you have seen something before, your confidence that you have seen it and your accuracy in recalling it are linked: The more confident you are in your memory, the more likely you are to be right
  • . This fall the panel (which one of us, Daniel Simons, served on) released a comprehensive report that recommended procedures to minimize the chances of false memory and mistaken identification, including videotaping police lineups and improving jury instructions.
  • When we recall our own memories, we are not extracting a perfect record of our experiences and playing it back verbatim. Most people believe that memory works this way, but it doesn’t. Instead, we are effectively whispering a message from our past to our present, reconstructing it on the fly each time. We get a lot of details right, but when our memories change, we only “hear” the most recent version of the message, and we may assume that what we believe now is what we always believed.
  • Studies find that even our “flashbulb memories” of emotionally charged events can be distorted and inaccurate, but we cling to them with the greatest of confidence.
  • With each retrieval our memories can morph, and so can our confidence in them. This is why the National Academy of Sciences report strongly advised courts to rely on initial statements rather than courtroom proclamations:
  • In fact, the mere act of describing a person’s appearance can change how likely you are to pick him out of a lineup later. This finding, known as “verbal overshadowing,” had been controversial, but was recently verified in a collective effort by more than 30 separate research labs.
  • The science of memory distortion has become rigorous and reliable enough to help guide public policy. It should also guide our personal attitudes and actions.
  • It is just as misguided to conclude that someone who misremembers must be lying as it is to defend a false memory in the face of contradictory evidence. We should be more understanding of mistakes by others, and credit them when they admit they were wrong. We are all fabulists, and we must all get used to it.
  • Subliminal is a good book on this subject, as is Thinking, Fast and Slow. It is not merely that our memory is a game of telephone in which we garble the memory as we retrieve and re-store it. It appears to be a very useful part of existence, which has stayed with us or gotten stronger with evolution. There seems to be utility in forgetting, misremembering, and having memories coalesce with those of others in our social groups.
sanderk

Opinion | Why Our Memory Fails Us - The New York Times - 0 views

  • Dr. Tyson implied that President Bush was prejudiced against Islam in order to make a broader point about scientific awareness: Two-thirds of the named stars actually have Arabic names, given to them at a time when Muslims led the world in astronomy — and Mr. Bush might not have said what he did if he had known this fact.This is a powerful example of how our biases can blind us. But not in the way Dr. Tyson thought. Mr. Bush wasn’t blinded by religious bigotry. Instead, Dr. Tyson was fooled by his faith in the accuracy of his own memory.
  • When he was first asked for the source of Mr. Bush’s quotation, Dr. Tyson insisted, “I have explicit memory of those words being spoken by the president. I reacted on the spot, making note for possible later reference in my public discourse. Odd that nobody seems to be able to find the quote anywhere.” He then added, “One of our mantras in science is that the absence of evidence is not the same as evidence of absence.”
  • We recall events easily and often, at least if they are important to us, but only rarely do we find our memories contradicted by evidence, much less take the initiative to check if they are right. We then rely on confidence as a signal of accuracy — in ourselves and in others.
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  • But when our own memories are challenged, we may neglect all this and instead respond emotionally, acting as though we must be right and everyone else must be wrong
  • This fall the panel (which one of us, Daniel Simons, served on) released a comprehensive report that recommended procedures to minimize the chances of false memory and mistaken identification, including videotaping police lineups and improving jury instructions.
  • In general, if you have seen something before, your confidence that you have seen it and your accuracy in recalling it are linked: The more confident you are in your memory, the more likely you are to be right. But new research reveals important nuances about this link.
  • But when people mistakenly recalled words that were similar to those on the lists but not actually on the lists — a false memory — they also expressed high confidence.
  • When we recall our own memories, we are not extracting a perfect record of our experiences and playing it back verbatim. Most people believe that memory works this way, but it doesn’t. Instead, we are effectively whispering a message from our past to our present, reconstructing it on the fly each time.
  • In Dr. Tyson’s case, once the evidence of his error was undeniable, he didn’t dig his hole deeper or wish the controversy away. He realized that his memory had conflated his experiences of two memorable and personally significant events that both involved speeches by Mr. Bush. He probably still remembers it the way he described it in his talks — but to his credit, he recognizes that the evidence outweighs his experience, and he has publicly apologized.
  • Good scientists remain open to the possibility that they are wrong, and should question their own beliefs until the evidence is overwhelming. We would all be wise to do the same.
  • Politicians should respond as Dr. Tyson eventually did: Stop stonewalling, admit error, note that such things happen, apologize and move on
Javier E

AI could end independent UK news, Mail owner warns - 0 views

  • Artificial intelligence could destroy independent news organisations in Britain and potentially is an “existential threat to democracy”, the executive chairman of DMGT has warned.
  • “They have basically taken all our data, without permission and without even a consideration of the consequences. They are using it to train their models and to start producing content. They’re commercialising it,
  • AI had the potential to destroy independent news organisations “by ripping off all our content and then repurposing it to people … without any responsibility for the efficacy of that content”
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  • The risk was that the internet had become an echo chamber of stories produced by special interest groups and rogue states, he said.
  • The danger is that these huge platforms end up in an arms race with each other. They’re like elephants fighting and then everybody else is like mice that get stamped on without them even realising the consequences of their actions.”
  • there are huge consequences to this technology. And it’s not just the danger of ripping our industry apart, but also ripping other industries apart, all the creative industries. How many jobs are going to be lost? What’s the damage to the economy going to be if these rapacious organisations can continue to operate without any legal ramifications?
  • Rothermere revealed that DMGT had experimented with using AI to help journalists to publish stories faster, but that it then took longer “to check the accuracy of what it comes up” than it would have done to write the article.
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    Rothermere revealed that DMGT had experimented with using AI to help journalists to publish stories faster, but that it then took longer "to check the accuracy of what it comes up" than it would have done to write the article.
Javier E

Scientists See Advances in Deep Learning, a Part of Artificial Intelligence - NYTimes.com - 1 views

  • Using an artificial intelligence technique inspired by theories about how the brain recognizes patterns, technology companies are reporting startling gains in fields as diverse as computer vision, speech recognition and the identification of promising new molecules for designing drugs.
  • They offer the promise of machines that converse with humans and perform tasks like driving cars and working in factories, raising the specter of automated robots that could replace human workers.
  • what is new in recent months is the growing speed and accuracy of deep-learning programs, often called artificial neural networks or just “neural nets” for their resemblance to the neural connections in the brain.
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  • With greater accuracy, for example, marketers can comb large databases of consumer behavior to get more precise information on buying habits. And improvements in facial recognition are likely to make surveillance technology cheaper and more commonplace.
  • Modern artificial neural networks are composed of an array of software components, divided into inputs, hidden layers and outputs. The arrays can be “trained” by repeated exposures to recognize patterns like images or sounds.
  • “The point about this approach is that it scales beautifully. Basically you just need to keep making it bigger and faster, and it will get better. There’s no looking back now.”
Javier E

Assessing Kurzweil: the results - Less Wrong - 0 views

  • when talking about unprecedented future events such as nanotechnology or AI, the choice of the model is also dependent on expert judgement.
  • In various books, he's made predictions about what would happen in 2009, and we're now in a position to judge their accuracy. I haven't been satisfied by the various accuracy ratings I've found online, so I decided to do my own assessments.
  • Ray Kurzweil has a model of technological intelligence development where, broadly speaking, evolution, pre-computer technological development, post-computer technological development and future AIs all fit into the same exponential increase.
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  • relying on a single assessor is unreliable, especially when some of the judgements are subjective. So I started a call for volunteers to get assessors. Meanwhile Malo Bourgon set up a separate assessment on Youtopia, harnessing the awesome power of altruists chasing after points. The results are now in, and they are fascinating. They are...
kortanekev

Beyond Drake's Equation --"Life on Other Planets is More Optimism Than Science" (Monday... - 0 views

  • the Princeton University researchers have found that the expectation that life — from bacteria to sentient beings — has or will develop on other planets as on Earth might be based more on optimism than scientific evidence.
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    The optimism fallacy -- being biased based on what one hopes to find -- is impeding the accuracy of our research into life beyond earth. This fallacy causes one to form false assumptions from data we have already collected and jump to conclusions that are most probably, fallacious. 
sissij

Watch How Casually False Claims are Published: New York Times and Nicholas Lemann Edition - 1 views

  •  wrote my favorite sentence about this whole affair, one which I often quoted in my speeches to great audience laughter: “there are only three possible explanations for the Snowden heist: 1) It was a Russian espionage operation; 2) It was a Chinese espionage operation; or 3) It was a joint Sino-Russian operation.”
  • demanding that they only publish those which expose information necessary to inform the public debate: precisely because he did not want to destroy NSA programs he believes are justifiable.
  • As is true of most leaks – from the routine to the spectacular – those publishing decisions rested solely in the hands of the media outlets and their teams of reporters, editors and lawyers.
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  • There have of course been some stories where my calculation of what is not public interest differs from that of reporters, but it is for this precise reason that publication decisions were entrusted to journalists and their editors.
  • it is so often the case that the most influential media outlets publish factually false statements using the most authoritative tones.
  • Ironically, the most controversial Snowden stories – the type his critics cite as the ones that should not have been published because they exposed sensitive national security secrets – were often the ones the NYT itself decided to publish, such as its very controversial exposé on how NSA spied on China’s Huawei.
  • Snowden didn’t decide what stayed secret. The press did.
  • journalist-driven process that determined which documents got published
  • But Snowden never said anything like that.
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    The reporting on Snowden shows that how bad our new system can be. Although it is arguable that this article can be false as well because we can never know the exact truth except the Snowden himself. Our flaws in logic and perception makes us very vulnerable to bad news. There was time in social media called the "Yellow News". During that time, the news publications weren't taking their responsibility as a guide to the general population. We surely need better news and prevent the era that we publish our news based on its "hotness" instead of accuracy. --Sissi (1/12/2017)
Javier E

Wikipedia and the Meaning of Truth - Technology Review - 0 views

  • Why the online encyclopedia's epistemology should worry those who care about traditional notions of accuracy.
  • With little notice from the outside world, the community-written encyclopedia Wikipedia has redefined the commonly accepted use of the word "truth."
kenjiendo

Impact Factor and the Future of Medical Journals - Haider Javed Warraich - The Atlantic - 0 views

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      An article highlighting recent criticism for the accuracy of published Medical Journals, origins of the issue, and possible solutions for the future. 
  • Impact Factor and the Future of Medical Journals Some research publications are getting away from flawed measures of influence that make it easy to game the system.
  • This year's Nobel Prize winner in physiology, Randy Scheckman, announced his decision to boycott the three major “luxury” journals: Science, Nature, and Cell.
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  • medical journals are very rigid
  • impact factor, defined as the number of citations divided by the number of papers published in the journal, which is a measure to convey the influence of journals and the research they carry.
  • Journals employ several strategies to artificially raise the impact factor
  • caught trying to induce authors to increase the number of citations
  • cite each other’s articles
  • citations are barely a reflection of the quality of the research and that the impact factor is easily manipulated
  • shing’s growth is actually one of its g
  • overwhelmed with the avalanche of information
  • current system of peer-review, which originated in the 18th century, is now stressed
    • kenjiendo
       
      An example from our reading from U6-9
  • future of the medical journal was, he summed it up in just one word: “Digital.”
  • more innovative approache
  • PLOS One, which provides individual article metrics to anyone who accesses the article.
  • Instead of letting the reputation of the journal decide the impact of its papers, PLOS One provides information about the influence of the article on a more granular level.
  • future of medical publishing is a democratic one
  • Smart software will decide based on largely open access journals which papers will be of most interest to a particular reader.
  • Biology Direct, a journal that provides open peer review that is available for readers to read along with the article, with or without changes suggested by the reviewers.
  • Impact Factor and the Future of Medical Journals
  • Impact Factor and the Future of Medical Journals
Javier E

Getting It Right - NYTimes.com - 1 views

  • What is it to truly know something?
  • In the complacent 1950s, it was received wisdom that we know a given proposition to be true if, and only if, it is true, we believe it to be true, and we are justified in so believing.
  • This consensus was exploded in a brief 1963 note by Edmund Gettier in the journal Analysis.
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  • Suppose you have every reason to believe that you own a Bentley, since you have had it in your possession for many years, and you parked it that morning at its usual spot. However, it has just been destroyed by a bomb, so that you own no Bentley, despite your well justified belief that you do. As you sit in a cafe having your morning latte, you muse that someone in that cafe owns a Bentley (since after all you do). And it turns out you are right, but only because the other person in the cafe, the barista, owns a Bentley, which you have no reason to suspect. So you here have a well justified true belief that is not knowledge.
  • After many failed attempts to fix the justified-true-belief account with minor modifications, philosophers tried more radical departures. One promising approach suggests that knowledge is a form of action, comparable to an archer’s success when he consciously aims to hit a target.
  • An archer’s shot can be assessed in several ways. It can be accurate (successful in hitting the target). It can also be adroit (skillful or competent). An archery shot is adroit only if, as the arrow leaves the bow, it is oriented well and powerfully enough.
  • A shot’s aptness requires that its success be attained not just by luck (such as the luck of that second gust). The success must rather be a result of competence.
  • we can generalize from this example, to give an account of a fully successful attempt of any sort. Any attempt will have a distinctive aim and will thus be fully successful only if it succeeds not only adroitly but also aptly.
  • We need people to be willing to affirm things publicly. And we need them to be sincere (by and large) in doing so, by aligning public affirmation with private judgment. Finally, we need people whose assertions express what they actually know.
  • Aristotle in his “Nicomachean Ethics” developed an AAA account of attempts to lead a flourishing life in accord with fundamental human virtues (for example, justice or courage). Such an approach is called virtue ethics.
  • Since there is much truth that must be grasped if one is to flourish, some philosophers have begun to treat truth’s apt attainment as virtuous in the Aristotelian sense, and have developed a virtue epistemology
  • Virtue epistemology begins by recognizing assertions or affirmations.
  • A particularly important sort of affirmation is one aimed at attaining truth, at getting it right
  • All it takes for an affirmation to be alethic is that one of its aims be: getting it right.
  • Humans perform acts of public affirmation in the endeavor to speak the truth, acts with crucial importance to a linguistic species. We need such affirmations for activities of the greatest import for life in society: for collective deliberation and coordination, and for the sharing of information.
  • a fully successful attempt is good overall only if the agent’s goal is good enough. An attempt to murder an innocent person is not good even if it fully succeeds.
  • Virtue epistemology gives an AAA account of knowledge: to know affirmatively is to make an affirmation that is accurate (true) and adroit (which requires taking proper account of the evidence). But in addition, the affirmation must be apt; that is, its accuracy must be attributable to competence rather than luck.
  • Requiring knowledge to be apt (in addition to accurate and adroit) reconfigures epistemology as the ethics of belief.
  • as a bonus, it allows contemporary virtue epistemology to solve our Gettier problem. We now have an explanation for why you fail to know that someone in the cafe owns a Bentley, when your own Bentley has been destroyed by a bomb, but the barista happens to own one. Your belief in that case falls short of knowledge for the reason that it fails to be apt. You are right that someone in the cafe owns a Bentley, but the correctness of your belief does not manifest your cognitive or epistemic competence. You are right only because by epistemic luck the barista happens to own one.
  • When in your musings you affirm to yourself that someone in the cafe owns a Bentley, therefore, your affirmation is not an apt alethic affirmation, and hence falls short of knowledge.
Adam Clark

False Memory's Fantastic Four - 1 views

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    "Next time you tell a story to someone, don't be upset if they don't believe you, because what you may not know, is that occasionally you can't even believe your own memories!  Yes, that's correct, even your own memories can deceive you.  The concept of false memories is well supported in scientific research.  People generally think of their memories as something like an accurate recording that documents and stores everything that happens with perfect accuracy.  In reality, human memory is very prone to inaccuracies."
caelengrubb

Why Is Memory So Good and So Bad? - Scientific American - 0 views

  • Memories of visual images (e.g., dinner plates) are stored in what is called visual memory.
  • Our minds use visual memory to perform even the simplest of computations; from remembering the face of someone we’ve just met, to remembering what time it was last we checked. Without visual memory, we wouldn’t be able to store—and later retrieve—anything we see.
  • ust as a computer’s memory capacity constrains its abilities, visual memory capacity has been correlated with a number of higher cognitive abilities, including academic success, fluid intelligence (the ability to solve novel problems), and general comprehension.
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  • For many reasons, then, it would be very useful to understand how visual memory facilitates these mental operations, as well as constrains our ability to perform them
  • Visual working memory is where visual images are temporarily stored while your mind works away at other tasks—like a whiteboard on which things are briefly written and then wiped away. We rely on visual working memory when remembering things over brief intervals, such as when copying lecture notes to a notebook.
  • Which is exactly what happened: Zhang & Luck found that participants were either very precise, or they completely guessed; that is, they either remembered the square’s color with great accuracy, or forgot it completely
  • The participants had a simple task: to recall the color of one particular square, not knowing in advance which square they would be asked to recall. The psychologists assumed that measuring how visual working memory behaves over increasing demands (i.e., the increasing durations of 1,4 or 10 seconds) would reveal something about how the system works.
  • If short-term visual memories fade away—if they are gradually wiped away from the whiteboard—then after longer intervals participants’ accuracy in remembering the colors should still be high, deviating only slightly from the square’s original color. But if these memories are wiped out all at once—if the whiteboard is left untouched until, all at once, scrubbed clean—then participants should make very precise responses (corresponding to instances when the memories are still untouched) and then, after the interval grows too long, very random guesses.
  • UC Davis psychologists Weiwei Zhang and Steven Luck have shed some light on this problem. In their experiment, participants briefly saw three colored squares flashed on a computer screen, and were asked to remember the colors of each square. Then, after 1, 4 or 10 seconds the squares re-appeared, except this time their colors were missing, so that all that was visible were black squares outlined in white.
  • But this, it turns out, is not true of all memories
  • In a recent paper, Researchers at MIT and Harvard found that, if a memory can survive long enough to make it into what is called “visual long-term memory,” then it doesn’t have to be wiped out at all.
  • Talia Konkle and colleagues showed participants a stream of three thousand images of different scenes, such as ocean waves, golf courses or amusement parks. Then, participants were shown two hundred pairs of images—an old one they had seen in the first task, and a completely new one—and asked to indicate which was the old one.
  • Participants were remarkably accurate at spotting differences between the new and old images—96 percent
  • In a recent review, researchers at Harvard and MIT argue that the critical factor is how meaningful the remembered images are—whether the content of the images you see connects to pre-existing knowledge about them
  • This prior knowledge changes how these images are processed, allowing thousands of them to be transferred from the whiteboard of short-term memory into the bank vault of long-term memory, where they are stored with remarkable detail.
  • Together, these experiments suggest why memories are not eliminated equally— indeed, some don’t seem to be eliminated at all. This might also explain why we’re so hopeless at remembering some things, and yet so awesome at remembering others.
tonycheng6

Accurate machine learning in materials science facilitated by using diverse data sources - 0 views

  • Computational modelling is also used to estimate the properties of materials. However, there is usually a trade-off between the cost of the experiments (or simulations) and the accuracy of the measurements (or estimates), which has limited the number of materials that can be tested rigorously.
  • Materials scientists commonly supplement their own ‘chemical intuition’ with predictions from machine-learning models, to decide which experiments to conduct next
  • More importantly, almost all of these studies use models built on data obtained from a single, consistent source. Such models are referred to as single-fidelity models.
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  • However, for most real-world applications, measurements of materials’ properties have varying levels of fidelity, depending on the resources available.
  • A comparison of prediction errors clearly demonstrates the benefit of the multi-fidelity approach
  • The authors’ system is not restricted to materials science, but is generalizable to any problem that can be described using graph structures, such as social networks and knowledge graphs (digital frameworks that represent knowledge as concepts connected by relationships)
  • More research is needed to understand the scenarios for which multi-fidelity learning is most beneficial, balancing prediction accuracy with the cost of acquiring data
ilanaprincilus06

The perfect memory: does it even exist? | Dean Burnett | Science | The Guardian - 0 views

  • Photographic memory, eidetic memory, Hyperthymesia, Highly Superior Autobiographical Memory, perfect recall, there are a number of labels to choose from when discussing formidable memory prowess.
  • However, the idea that someone has a “flawless” memory, is able to remember everything from any aspect of their lives in great and accurate detail, is far from confirmed by available scientific evidence.
  • when you ask more personal life events that things get tricky. If someone describes the scene at their 7th birthday and what presents they got, how you are supposed to confirm if they’re remembering it correctly?
    • ilanaprincilus06
       
      More likely to remember the quantitative attributes rather than the qualitative.
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  • There’s also the problem of verifying someone’s memory in terms of accuracy. If you ask them to remember the dates of major events, then yes, you can easily determine the accuracy of that.
  • This may seem like needless pedantry; why would anyone lie about such a thing? Except it’s not that they lie, it’s that they could be remembering it wrongly and not realise they’re doing it.
  • Sadly, what research there is suggests that those people with incredible memories are just as susceptible to forming “false memories” as anyone else.
  • What good is being able to remember vast amounts of information if you can’t be sure any of it is accurate?
  • Those with incredible, innate memory prowess describe it as a mixed blessing at best. The increased demand on your thinking capacity, the constant dwelling in the past, the inability to escape painful or damaging experiences? If someone offered you all that, would you accept?
johnsonel7

The Opposite of Empathy | Psychology Today - 0 views

  • Dymond began by assessing empathy with the Thematic Apperception Test (TAT)—a set of cards depicting images of archetypal personalities and dramatic scenes created by psychologist Henry Murray and artist Christiana Morgan. Subjects scrutinized the images and told stories about the figures in the pictures. These stories were frequently drawn from the subject’s own experiences.
  • Empathy was no longer a matter of making up intricate stories but of correctly predicting another’s response. Dymond's revised definition of empathy appeared in her 1952 paper as: “the imaginative and accurate transposing of oneself into the thinking, feeling and acting of another”
  • The finding that many undergraduates had little empathic accuracy prompted psychologists to propose that empathy should be trained. In 1952, Dartmouth offered a new course, “Introduction in Human Relations,” aimed at increasing students’ sensitivity to the attitudes and feelings of others. The Harvard psychologist Gordon Allport expressed concern that the social sciences had fallen far behind the rapid developments made in the natural sciences. He viewed the failure to understand social relationships as an existential threat: the chances for the survival of humanity were poor, he mused, “unless we can improve mankind’s understanding and control of social and personal factors” [6].
Javier E

Vikings' Struggles Come to Life in History Channel's Series - NYTimes.com - 0 views

  • Propelled by the tale of the legendary Norse adventurer Ragnar Lothbrok, his family and his band of followers, the lushly produced, effects-enhanced series dazzles with evocative scenery and dynamic displays of superherolike derring-do and physical stamina.
  • Mr. Hirst immersed himself in what had been written about Viking culture — basically documentation by outside observers since theirs was an illiterate society. He found the material limited and biased.
  • “They’re always the guys who break in through the door, slash up your house and rape and pillage for no good reason, except that they enjoy the violence,” he said. “I wanted to tell the story from the Vikings’ point of view, because their history was written by Christian monks, basically, whose job it was to exaggerate their violence.”
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  • Despite History’s mantle of preserving and purveying an accurate picture of the past, hewing to the letter of historical accuracy wasn’t possible in the case of a dramatic series based on fragmented documentation, hence a large degree of dramatic license was employed.
  • “I especially had to take liberties with ‘Vikings’ because no one knows for sure what happened in the Dark Ages,” Mr. Hirst said. “Very little was written then.” The bottom line, he explained, was: “We want people to watch it. A historical account of the Vikings would reach hundreds, occasionally thousands, of people. Here we’ve got to reach millions.”
  • he was hard put to replicate authentic fabrics and woods. One of the biggest challenges he faced, he added, was improvising lighting sources for Viking homes and halls, which had no windows, making engaging photography of a strictly realistic interior setting impossible.
Emily Horwitz

News from The Associated Press - 0 views

  • If you saw the film "Argo," no, you didn't miss this development, which is recounted in Mendez's book about the real-life operation. It wasn't there because director Ben Affleck and screenwriter Chris Terrio replaced it with an even more dramatic scenario, involving canceled flight reservations, suspicious Iranian officials who call the Hollywood office of the fake film crew (a call answered just in time), and finally a heart-pounding chase on the tarmac just as the plane's wheels lift off, seconds from catastrophe.
  • they've caught some flak for the liberties they took in the name of entertainment.
  • And they aren't alone - two other high-profile best-picture nominees this year, Kathryn Bigelow's "Zero Dark Thirty" and Steven Spielberg's "Lincoln," have also been criticized for different sorts of factual issues.
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  • But because these three major films are in contention, the issue has come to the forefront of this year's Oscar race, and with it a thorny cultural question: Does the audience deserve the truth, the whole truth and nothing but? Surely not, but just how much fiction is OK?
  • In response to a complaint by a Connecticut congressman, Kushner acknowledged he'd changed the details for dramatic effect, having two Connecticut congressmen vote against the amendment when, in fact, all four voted for it. (The names of those congressmen were changed, to avoid changing the vote of specific individuals.)
  • "Maybe changing the vote went too far," says Richard Walter, chairman of screenwriting at the University of California, Los Angeles. "Maybe there was another way to do it. But really, it's not terribly important. People accept that liberties will be taken. A movie is a movie. People going for a history lesson are going to the wrong place."
  • Kushner said he had "adhered to time-honored and completely legitimate standards for the creation of historical drama, which is what `Lincoln' is. I hope nobody is shocked to learn that I also made up dialogue and imagined encounters and invented characters."
  • Walter says he always tells his students: "Go for the feelings. Because the only thing that's truly real in the movies are the feelings that people feel when they watch."
  • No subject or individual's life is compelling and dramatic enough by itself, he says, that it neatly fits into a script with three acts, subplots, plot twists and a powerful villain.
  • Futterman says he was sympathetic to those concerns and would certainly have addressed them in the script, had he anticipated them.
  • "This is fraught territory," he says. "You're always going to have to change something, and you're always going to get in some sort of trouble, with somebody," he says.
  • Futterman also doesn't begrudge the "Argo" filmmakers, because he feels they use a directorial style that implies some fun is being had with the story. "All the inside joking about Hollywood - tonally, you get a sense that something is being played with," he says.
  • Reeves, who actually gave the "Lincoln" script a negative review because he thought it was too heavy on conversation and lacking action. He adds, though, that when the subject is as famous as Lincoln, one has a responsibility to be more faithful to the facts.
  • Of the three Oscar-nominated films in question, "Zero Dark Thirty" has inspired the most fervent debate. The most intense criticism, despite acclaim for the filmmaking craft involved, has been about its depictions of interrogations, with some, including a group of senators, saying the film misleads viewers for suggesting that torture provided information that helped the CIA find Osama bin Laden.
  • have been questions about the accuracy of the depiction of the main character, a CIA officer played by Jessica Chastain; the real person - or even combination of people, according to some theories - that she plays remains anonymous.
  • screenwriters have a double responsibility: to the material and to the audience.
  • The debate over "Argo" has been much less intense, though there has been some grumbling from former officials in Britain and New Zealand that their countries were portrayed incorrectly in the film as offering no help at all to the six Americans, whereas actually, as Mendez writes, they did provide some help.
  • "When I am hungry and crave a tuna fish sandwich, I don't go to a hardware store," he says. "When I seek a history lesson, I do not go to a movie theater. I loved `Argo' even though I know there was no last-minute turn-around via a phone call from President Carter, nor were there Iranian police cars chasing the plane down the tarmac as it took off. So what? These conceits simply make the movie more exciting."
  •  
    This article reaffirmed my feelings that we can't trust everything that we see or hear through the media, because it is often skewed to better captivate the target audience. As the article stated, there appears to be a fine line in catering to the attention span of the audience, and respecting the known facts of a given event that is portrayed by a movie.
Javier E

Book Review: Models Behaving Badly - WSJ.com - 1 views

  • Mr. Derman is perhaps a bit too harsh when he describes EMM—the so-called Efficient Market Model. EMM does not, as he claims, imply that prices are always correct and that price always equals value. Prices are always wrong. What EMM says is that we can never be sure if prices are too high or too low.
  • The Efficient Market Model does not suggest that any particular model of valuation—such as the Capital Asset Pricing Model—fully accounts for risk and uncertainty or that we should rely on it to predict security returns. EMM does not, as Mr. Derman says, "stubbornly assume that all uncertainty about the future is quantifiable." The basic lesson of EMM is that it is very difficult—well nigh impossible—to beat the market consistently.
  • Mr. Derman gives an eloquent description of James Clerk Maxwell's electromagnetic theory in a chapter titled "The Sublime." He writes: "The electromagnetic field is not like Maxwell's equations; it is Maxwell's equations."
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  • He sums up his key points about how to keep models from going bad by quoting excerpts from his "Financial Modeler's Manifesto" (written with Paul Wilmott), a paper he published a couple of years ago. Among its admonitions: "I will always look over my shoulder and never forget that the model is not the world"; "I will not be overly impressed with mathematics"; "I will never sacrifice reality for elegance"; "I will not give the people who use my models false comfort about their accuracy"; "I understand that my work may have enormous effects on society and the economy, many beyond my apprehension."
  • As the collapse of the subprime collateralized debt market in 2008 made clear, it is a terrible mistake to put too much faith in models purporting to value financial instruments. "In crises," Mr. Derman writes, "the behavior of people changes and normal models fail. While quantum electrodynamics is a genuine theory of all reality, financial models are only mediocre metaphors for a part of it."
  • Although financial models employ the mathematics and style of physics, they are fundamentally different from the models that science produces. Physical models can provide an accurate description of reality. Financial models, despite their mathematical sophistication, can at best provide a vast oversimplification of reality. In the universe of finance, the behavior of individuals determines value—and, as he says, "people change their minds."
  • Bringing ethics into his analysis, Mr. Derman has no patience for coddling the folly of individuals and institutions who over-rely on faulty models and then seek to escape the consequences. He laments the aftermath of the 2008 financial meltdown, when banks rebounded "to record profits and bonuses" thanks to taxpayer bailouts. If you want to benefit from the seven fat years, he writes, "you must suffer the seven lean years too, even the catastrophically lean ones. We need free markets, but we need them to be principled."
kushnerha

Why People Are Confused About What Experts Really Think - The New York Times - 2 views

  • GIVEN the complexities of the modern world, we all have to rely on expert opinion. Are G.M.O. foods safe? Is global warming real? Should children be vaccinated for measles? We don’t have the time or the training to adjudicate these questions ourselves. We defer to the professionals.
  • And to find out what the experts think, we typically rely on the news media. This creates a challenge for journalists: There are many issues on which a large majority of experts agree but a small number hold a dissenting view. Is it possible to give voice to experts on both sides — standard journalistic practice — without distorting the public’s perception of the level of disagreement?
  • This can be hard to do. Indeed, critics argue that journalists too often generate “false balance,” creating an impression of disagreement when there is, in fact, a high level of consensus. One solution, adopted by news organizations such as the BBC, is “weight of evidence” reporting, in which the presentation of conflicting views is supplemented by an indication of where the bulk of expert opinion lies.
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  • Both studies suggest that “weight of evidence” reporting is an imperfect remedy. It turns out that hearing from experts on both sides of an issue distorts our perception of consensus — even when we have all the information we need to correct that misperception.
  • In one study, all the participants were presented with a numerical summary, drawn from a panel of experts convened by the University of Chicago, of the range of expert opinion on certain economic issues.
  • One group of participants, however, was presented not only with the numerical summary of expert opinion but also with an excerpted comment from one expert on either side of an issue.
  • Then, all the participants were asked to rate their perception of the extent to which the experts agreed with one another on each issue. Even though both had a precise count of the number of experts on either side, the participants who also read the comments of the opposing experts gave ratings that did not distinguish as sharply between the high-consensus and the low-consensus issues. In other words, being exposed to the conflicting comments made it more difficult for participants to distinguish the issues most experts agreed on (such as carbon tax) from those for which there was substantial disagreement (such as minimum wage).
  • This distorting influence affected not only the participants’ perception of the degree of consensus, but also their judgments of whether there was sufficient consensus to use it to guide public policy.
  • What explains this cognitive glitch? One possibility is that when we are presented with comments from experts on either side of an issue, we produce a mental representation of the disagreement that takes the form of one person on either side, which somehow contaminates our impression of the distribution of opinions in the larger population of experts.
  • Another possibility is that we may just have difficulty discounting the weight of a plausible argument, even when we know it comes from an expert whose opinion is held by only a small fraction of his or her peers.
  • It’s also possible that the mere presence of conflict (in the form of contradictory expert comments) triggers a general sense of uncertainty in our minds, which in turn colors our perceptions of the accuracy of current expert understanding of an issue.
  • the implications are worrisome. Government action is guided in part by public opinion. Public opinion is guided in part by perceptions of what experts think. But public opinion may — and often does — deviate from expert opinion, not simply, it seems, because the public refuses to acknowledge the legitimacy of experts, but also because the public may not be able to tell where the majority of expert opinion lies.
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