Skip to main content

Home/ TOK Friends/ Group items tagged adults

Rss Feed Group items tagged

Emily Horwitz

UK, Japan scientists win Nobel for stem cell breakthroughs | Reuters - 0 views

  • Scientists from Britain and Japan shared a Nobel Prize on Monday for the discovery that adult cells can be transformed back into embryo-like stem cells that may one day regrow tissue in damaged brains, hearts or other organs.
  • discovered ways to create tissue that would act like embryonic cells, without the need to harvest embryos.
  • "These groundbreaking discoveries have completely changed our view of the development and specialization of cells," the Nobel Assembly at Stockholm's Karolinska Institute said.
  • ...6 more annotations...
  • big hope for stem cells is that they can be used to replace damaged tissue in everything from spinal cord injuries to Parkinson's disease.
  • Scientists once thought it was impossible to turn adult tissue back into stem cells, which meant that new stem cells could only be created by harvesting embryos - a practice that raised ethical qualms in some countries and also means that implanted cells might be rejected by the body.
  • The new stem cells are known as "induced pluripotency stem cells", or iPS cells.
  • "We would like to be able to find a way of obtaining spare heart or brain cells from skin or blood cells. The important point is that the replacement cells need to be from the same individual, to avoid problems of rejection and hence of the need for immunosuppression."
  • Thomas Perlmann, Nobel Committee member and professor of Molecular Development Biology at the Karolinska Institute said: "Thanks to these two scientists, we know now that development is not strictly a one-way street."
  • "You can't take out a large part of the heart or the brain or so to study this, but now you can take a cell from for example the skin of the patient, reprogram it, return it to a pluripotent state, and then grow it in a laboratory," he said.
Emily Horwitz

More Young People Are Moving Away From Religion, But Why? : NPR - 0 views

  • One-fifth of Americans are religiously unaffiliated — higher than at any time in recent U.S. history — and those younger than 30 especially seem to be drifting from organized religion. A third of young Americans say they don't belong to any religion.
  • raised Jewish and considers herself Jewish with an "agnostic bent." She loves going to synagogue.
  • I realize maybe there's a disconnect there — why are you doing it if you don't necessarily have a belief in God? But I think there's a cultural aspect, there's a spiritual aspect, I suppose. I find the practice of sitting and being quiet and being alone with your thoughts to be helpful, but I don't think I need to answer that question [about God] in order to participate in the traditions I was brought up with."
  • ...8 more annotations...
  • Yusuf Ahmad, 33, raised Muslim, is now an atheist.
  • The thing for me — a large part of the reason I moved away from Catholicism was because without accepting a lot of these core beliefs, I just didn't think that I could still be part of that community.
  • I remember growing up, in like fifth [or] sixth grade I'd hear these stories and be like, 'That's crazy! Why would this guy do this? Just because he heard a voice in his head, he went to sacrifice his son and it turned into a goat?' There's no way that this happened. I wasn't buying it.
  • I don't [believe in God] but I really want to. That's the problem with questions like these is you don't have anything that clearly states, 'Yes, this is fact,' so I'm constantly struggling.
  • "It's a little troublesome now when people ask me. I tell them and they go, 'Oh, you're a Christian,' and I try to skirt the issue now. They go, 'What does that mean?' and it's like, "It's Latin for 'I made a mistake when I was 18.'
  • I remember a theology test in eighth grade where there was a question about homosexuality, and the right answer was that if you are homosexual, then that is not a sin because that's how God made you, but acting upon it would be a sin. That's what I put down as the answer, but I vividly remember thinking to myself that that was not the right answer."
  • We didn't have a lot of money, the household wasn't very stable a lot of the time, so when something bad would happen, say a prayer, go to church. When my mom got cancer the first time, it was something that was useful at the time for me as a coping mechanism.
  • So at some point you start to say, 'Why does all this stuff happen to people?' And if I pray and nothing good happens, is that supposed to be I'm being tried? I find that almost kind of cruel in some ways. It's like burning ants with a magnifying glass. Eventually that gets just too hard to believe anymore."
  •  
    An interesting interview with young adults of many different faiths about why they have lost their beliefs in God. Interestingly enough, not a lot of these were about science, as I had initially expected upon clicking on the link to the article.
oliviaodon

How Do We Learn Languages? | Brain Blogger - 0 views

  • The use of sound is one of the most common methods of communication both in the animal kingdom and between humans.
  • human speech is a very complex process and therefore needs intensive postnatal learning to be used effectively. Furthermore, to be effective the learning phase should happen very early in life and it assumes a normally functioning hearing and brain systems.
  • Nowadays, scientists and doctors are discovering the important brain zones involved in the processing of language information. Those zones are reassembled in a number of a language networks including the Broca, the Wernicke, the middle temporal, the inferior parietal and the angular gyrus. The variety of such brain zones clearly shows that the language processing is a very complex task. On the functional level, decoding a language begins in the ear where the incoming sounds are summed in the auditory nerve as an electrical signal and delivered to the auditory cortex where neurons extract auditory objects from that signal.
  • ...6 more annotations...
  • The effectiveness of this process is so great that human brain is able to accurately identify words and whole phrases from a noisy background. This power of analysis brings to minds the great similarity between the brain and powerful supercomputers.
  • Functional imaging of the brain revealed that activated brain parts are different between native and non-native speakers. The superior temporal gyrus is an important brain region involved in language learning. For a native speaker this part is responsible for automated processing of lexical retrieval and the build of phrase structure. In native speakers this zone is much more activated than in non-native ones.
  • infants begin their lives with a very flexible brain that allows them to acquire virtually any language they are exposed to. Moreover, they can learn a language words almost equally by listening or by visual coding. This brain plasticity is the motor drive of the children capability of “cracking the speech code” of a language. With time, this ability is dramatically decreased and adults find it harder to acquire a new language.
  • clearly demonstrated that there are anatomical brain differences between fast and slow learners of foreign languages. By analyzing a group of people having a homogenous language background, scientists found that differences in specific brain regions can predict the capacity of a person to learn a second language.
  • Until the last decade few studies compared the language acquisition in adults and children. Thanks to modern imaging and electroencephalography we are now able to address this question.
  • Language acquisition is a long-term process by which information are stored in the brain unconsciously making them appropriate to oral and written usage. In contrast, language learning is a conscious process of knowledge acquisition that needs supervision and control by the person.
  •  
    Another cool article about how the brain works and language (inductive reasoning). 
proudsa

Why Future MDs Need More ZZZs | Arianna Yanes - 0 views

  • In an environment where it is expected -- and sometimes even seems trendy -- to not get enough sleep, it has been hard to remain steadfast with my habits.
  • The National Heart, Lung, and Blood Institute recommends 7-8 hours of sleep per night for adults, with some variation from person to person. Insufficient sleep is associated with numerous chronic conditions including diabetes, cardiovascular disease, obesity, and depression.
  • getting sufficient sleep is not a luxury -- it is a necessity -- and should be thought of as a 'vital sign' of good health."
  • ...6 more annotations...
  • Sleep deprivation has consequences for cognitive function, namely for attention and memory, two of the most crucial functions for any medical student.
  • If drinking alcohol before an exam is ludicrous, shouldn't an all-nighter be too?
  • The Institute of Medicine estimates that 50 to 70 million U.S. adults have a sleep or wakefulness disorder
  • If we do not find ways to make time for sleep now, we will face greater difficulty in finding balance when the hours become more demanding in our clinical years, in residency, and beyond.
  • "our ability to address and solve the problems we're facing as individuals and as a society.
  • "If sleep does not serve an absolutely vital function, then it is the biggest mistake the evolutionary process ever made."
lenaurick

Why time seems to speed up as we get older - Vox - 0 views

  • As part of a lifelong experiment on circadian rhythms, Sothern, now 69, is trying to confirm or reject a widely held belief: Many people feel that time flies by more quickly as they age.
  • So far, Sothern's results are inconclusive
  • "I'm tending now to overestimate the minute more than I used to," he tells me. But then again, he had detected a similar pattern — more overestimates — in the 1990s, only to have his estimates fall in the 2000s. "Time estimation isn't a perfect science," he says.
  • ...17 more annotations...
  • There's very little scientific evidence to suggest our perception of time changes as we age. And yet, we consistently report that the past felt longer — that time is flying by faster as we age. What's going on?
  • Scientists can look at time estimation, or our ability to estimate how long a minute passes, compared with a clock. (This is what Sothern is doing.) They can also look at time awareness, or the broad feeling that time is moving quickly or slowly. Finally there's time perspective, the sense of a past, present, and future as constructed by our memories.
  • What researchers have found out is that while time estimation and time awareness don't change much as we age, time perspective does. In other words: Our memories create the illusion time is accelerating.
  • There weren't many differences between the old and the young. "[C]hronological age showed no systematic influence on the perception of these brief intervals of time up," the authors wrote. (That said, the researchers did find that males overestimate time while females underestimate it, perhaps due to having slightly different circadian clocks and therefore slightly different metabolic rates
  • Here, too, age seemed not to matter. Older people didn't seem to be aware of time passing any faster than younger people. The only question that yielded a statistically significant difference was, "How fast did the last decade pass?" Even there, the reported differences were tiny, and the effect appeared to plateau around age 50.
  • psychologists William Friedman and Steve Janssen found scant evidence that the subjective experience of time speeds up with age. They write in their 2009 paper, "We can concluded that when adults report on their general impressions of the speed of time, age differences are very small."
  • One possibility is that participants were simply biased by the (incorrect) conventional wisdom — they reported their later years as flying by more quickly because that's what everyday lore says should happen.
  • When people reflect back on their own life, they feel like their early years went by very slowly and their later years go by more quickly. This could be the source of the belief that time goes more quickly as they age.
  •  "Most people feel that time is currently passing faster for them than it did in the past," Janssen writes me in an email. "They have forgotten how they experienced the passage of time when they were younger."
  • We use significant events as signposts to gauge the passage of time. The fewer events, the faster time seems to go by.
  • Childhood is full of big, memorable moments like learning to ride a bike or making first friends. By contrast, adult life becomes ordinary and mechanized, and ambles along by.
  • Each passing year converts some of this experience into automatic routine which we hardly notice at all, the days and weeks smooth themselves out in recollection, and the years grow hollow and collapse.
  • Each new minute represents a smaller fraction of our lives. One day as a 10 year old represents about .027 percent of the kid's life. A day for a 60 year old? .0045 percent. The kid's life is just... bigger.
  • Also, our ability to recall events declines with age. If we can't remember a time, it didn't happen.
  • "[F]inding that there is insufficient time to get things done may be reinterpreted as the feeling that time is passing quickly," they write. Deadlines always come sooner than we'd like.
  • Psychologists have long understood the phenomenon called "forward telescoping" — i.e., our tendency to underestimate how long ago very memorable events occurred. "Because we know that memories fade over time, we use the clarity of a memory as a guide to its recency," science writer Claudia Hammond writes in her book Time Warped. "So if a memory seems unclear we assumed it happened longer ago." But very clear memories are assumed to be more recent.
  • If our memories can trick us into thinking time is moving quickly, then maybe there are ways to trick our brains into thinking that time is slowing down — such as committing to breaking routines and learning new things. You're more likely to remember learning how to skydive than watching another hour of mindless television.
maxwellokolo

You're an Adult. Your Brain, Not So Much. - 0 views

  •  
    Leah H. Somerville, a Harvard neuroscientist, sometimes finds herself in front of an audience of judges. They come to hear her speak about how the brain develops. It's a subject on which many legal questions depend. How old does someone have to be to be sentenced to death?
Javier E

Why You Will Marry the Wrong Person - The New York Times - 1 views

  • IT’S one of the things we are most afraid might happen to us. We go to great lengths to avoid it. And yet we do it all the same: We marry the wrong person.
  • Partly, it’s because we have a bewildering array of problems that emerge when we try to get close to others. We seem normal only to those who don’t know us very well. In a wiser, more self-aware society than our own, a standard question on any early dinner date would be: “And how are you crazy?
  • Marriage ends up as a hopeful, generous, infinitely kind gamble taken by two people who don’t know yet who they are or who the other might be, binding themselves to a future they cannot conceive of and have carefully avoided investigating.
  • ...18 more annotations...
  • For most of recorded history, people married for logical sorts of reasons:
  • And from such reasonable marriages, there flowed loneliness, infidelity, abuse, hardness of heart and screams heard through the nursery doors
  • The marriage of reason was not, in hindsight, reasonable at all; it was often expedient, narrow-minded, snobbish and exploitative. That is why what has replaced it — the marriage of feeling — has largely been spared the need to account for itself
  • Finally, we marry to make a nice feeling permanent. We imagine that marriage will help us to bottle the joy we felt when the thought of proposing first came to us: Perhaps we were in Venice, on the lagoon, in a motorboat
  • But though we believe ourselves to be seeking happiness in marriage, it isn’t that simple. What we really seek is familiarity
  • We are looking to recreate, within our adult relationships, the feelings we knew so well in childhood. The love most of us will have tasted early on was often confused with other, more destructive dynamics: feelings of wanting to help an adult who was out of control, of being deprived of a parent’s warmth or scared of his anger, of not feeling secure enough to communicate our wishes.
  • How logical, then, that we should as grown-ups find ourselves rejecting certain candidates for marriage not because they are wrong but because they are too right — too balanced, mature, understanding and reliable — given that in our hearts, such rightness feels foreign. We marry the wrong people because we don’t associate being loved with feeling happy.
  • We make mistakes, too, because we are so lonely. No one can be in an optimal frame of mind to choose a partner when remaining single feels unbearable. We have to be wholly at peace with the prospect of many years of solitude in order to be appropriately picky
  • What matters in the marriage of feeling is that two people are drawn to each other by an overwhelming instinct and know in their hearts that it is right
  • marriage tends decisively to move us onto another, very different and more administrative plane, which perhaps unfolds in a suburban house, with a long commute and maddening children who kill the passion from which they emerged. The only ingredient in common is the partner. And that might have been the wrong ingredient to bottle.
  • The good news is that it doesn’t matter if we find we have married the wrong person.
  • We mustn’t abandon him or her, only the founding Romantic idea upon which the Western understanding of marriage has been based the last 250 years: that a perfect being exists who can meet all our needs and satisfy our every yearning.
  • WE need to swap the Romantic view for a tragic (and at points comedic) awareness that every human will frustrate, anger, annoy, madden and disappoint us — and we will (without any malice) do the same to them.
  • But none of this is unusual or grounds for divorce. Choosing whom to commit ourselves to is merely a case of identifying which particular variety of suffering we would most like to sacrifice ourselves for.
  • pessimism relieves the excessive imaginative pressure that our romantic culture places upon marriage. The failure of one particular partner to save us from our grief and melancholy is not an argument against that person and no sign that a union deserves to fail or be upgraded.
  • The person who is best suited to us is not the person who shares our every taste (he or she doesn’t exist), but the person who can negotiate differences in taste intelligently — the person who is good at disagreement.
  • Rather than some notional idea of perfect complementarity, it is the capacity to tolerate differences with generosity that is the true marker of the “not overly wrong” person
  • We should learn to accommodate ourselves to “wrongness,” striving always to adopt a more forgiving, humorous and kindly perspective on its multiple examples in ourselves and in our partners.
Duncan H

Raising the Chance of Some Cancers With Two Drinks a Day - WSJ.com - 0 views

  • Regularly drinking, even in moderation, raises the long-term risk of many kinds of cancer. A burgeoning body of research links alcohol to cancers of the breast, liver, colon, pancreas, mouth, throat, larynx and esophagus. A large new study last week added lung cancer to the list—even for people who have never smoked cigarettes.
  • For some of these cancers, such as lung, larynx and colorectal, the cancer risk only sets in when people drink heavily—three or four drinks a day on a regular basis. But just one drink a day raises the risk for cancers of the mouth and esophagus, several studies show.
  • "It's the repeated exposure to alcohol over a long period of time that will cause damage and it has a cumulative effect."
  • ...4 more annotations...
  • One study found that men who consumed eight to 14 drinks a week had a 59% lower risk of heart failure compared with those who didn't drink.
  • But experts warn that regularly drinking more than that can cause cardiovascular damage instead, raising blood pressure, increasing the risk of hemorrhagic stroke and leading to cardiomyopathy, a dangerous enlargement of the heart.
  • Benefits of moderate drinking, defined as one drink a day for women, two for men. •Reduces the risk of coronary heart disease by 30% to 35%. Increases HDL 'good' cholesterol. •Prevents platelets from sticking together, reducing blood clots, and lowers the risk of congestive heart failure. •Cuts the risk of heart attack by 40% to 50% in healthy men. •Reduces the risk of stroke and dementia.
  • Cancer risks linked to drinking. (Risks vary with the amount of alcohol consumed.)•Raises the risk of oral and pharyngeal cancer by 20% and risk of breast cancer by 8% among people who have one or fewer drinks a day. •Raises risk of oral cancers 73%, risk of liver cancer 20% and risk of breast cancer 31% among people who have two to three drinks per day. •Associated with a fivefold increase in risk of oral, pharyngeal and esophageal cancers in people who have four or more drinks per day. •Raises the risk of colorectal cancer by 52%, pancreatic cancer by 22%, breast cancer by 46%.
  •  
    Should adults drink in moderation then? How should the risks and benefits be balanced.
Javier E

A Multitasking Video Game Makes Old Brains Act Younger - NYTimes.com - 0 views

  • The research “shows you can take older people who aren’t functioning well and make them cognitively younger through this training,” said Earl K. Miller, a neuroscientist at the Massachusetts Institute of Technology, who was not affiliated with the research. “It’s a very big deal.”
  • Neuroscientists there, led by Dr. Adam Gazzaley, worked with developers to create NeuroRacer, a relatively simple video game in which players drive and try to identify specific road signs that pop up on the screen, while ignoring other signs deemed irrelevant.
  • One of the main early findings of the study reinforced just how challenging it is to multitask successfully, particularly as people age.
  • ...3 more annotations...
  • People in their 20s experienced a 26 percent drop in performance when they were asked to try to drive and identify signs at the same time (rather than just identify the signs without driving). For people in their 60s to 80s, the performance drop was 64 percent.
  • But after the older adults trained at the game, they became more proficient than untrained people in their 20s. The performance levels were sustained for six months, even without additional training. Also, the older adults performed better at memory and attention tests outside the game.
  • The researchers created a second layer of proof by monitoring the brain waves of participants using electroencephalography. What they found was that in older participants, in their 60s to 80s, there were increases in a brain wave called theta, a low-level frequency associated with attention.
grayton downing

Newborn Immune Systems Suppressed | The Scientist Magazine® - 0 views

  • sterile world of the womb, at birth babies are thrust into an environment full of bacteria, viruses, and parasites. They are very vulnerable to these infections for their first months of life—a trait that has long been blamed on their immature immune systems.
  • “This more intricate regulation of immune responses makes more sense than immaturity,” said Sing Sing Way, who led the study, “because it allows a protective response to be mounted if needed.” This may explain why newborn immune responses, though generally weak, also vary wildly between different babies and across different studies.
  • njecting 6-day-old mice with splenocytes (a type of white blood cell) from adults. Newborn mice are normally 1,000 times more suspectible to bacterial infections than adults, but despite receiving working immune cells, they became no less vulnerable.
  • ...3 more annotations...
  • Way added that there might be other reasons why newborns should carry immunosuppressive cells
  • Baby formulas contain small amounts of arginine. Sidney Morris, a biochemist from the University of Pittsburgh, said that it may be important to avoid fortifying them with extra arginine, lest it swamps the arginase activity of CD71+ cells, releases the immune system, and causes problems for the developing infants’ guts.
  • “Whether the precise mechanism of immunosuppression is the same or different in each of these circumstances remains to be determined,” he said.
Emily Freilich

What Kids Learn From Hearing Family Stories - Elaine Reese - The Atlantic - 0 views

  • A new study published in Science even shows that reading literary fiction improves adults’ ability to understand other people’s emotions.
  • The cozy image of cuddling up with your young child while poring over a book, however, doesn’t fit with reality for some parents and children. Parents from some cultures are not as comfortable reading with their children because books were not part of their everyday lives growing up.
  • highly active children, sitting down with a book is a punishment, not a reward.
  • ...7 more annotations...
  • everyday family stories,
  • often have higher self-esteem and stronger self-concepts.
  • confer many of the same benefits of reading–and even some new ones.
  • demonstrate better understanding of other people’s thoughts and emotions. These advanced narrative and emotional skills serve children well in the school years when reading complex material and learning to get along with others.
  • when parents learn to reminisce about everyday events with their preschool children in more detailed ways, their children tell richer, more complete narratives to other adults one to two years later
  • family stories are always free and completely portable.
  • “There have been great societies that did not use the wheel, but there have been no societies that did not tell stories.
Javier E

Learning How to Exert Self-Control - NYTimes.com - 1 views

  • Part of what adults need to learn about self-control is in those videos of 5-year-olds. The children who succeed turn their backs on the cookie, push it away, pretend it’s something nonedible like a piece of wood, or invent a song. Instead of staring down the cookie, they transform it into something with less of a throbbing pull on them.
  • Adults can use similar methods of distraction and distancing, he says. Don’t eye the basket of bread; just take it off the table. In moments of emotional distress, imagine that you’re viewing yourself from outside, or consider what someone else would do in your place. When a waiter offers chocolate mousse, imagine that a cockroach has just crawled across it
  • “If you change how you think about it, its impact on what you feel and do changes,”
  • ...5 more annotations...
  • there are two warring parts of the brain: a hot part demanding immediate gratification (the limbic system), and a cool, goal-oriented part (the prefrontal cortex). The secret of self-control, he says, is to train the prefrontal cortex to kick in first.
  • To do this, use specific if-then plans, like “If it’s before noon, I won’t check email” or “If I feel angry, I will count backward from 10.” Done repeatedly, this buys a few seconds to at least consider your options. The point isn’t to be robotic and never eat chocolate mousse again. It’s to summon self-control when you want it, and be able to carry out long-term plans.
  • “We don’t need to be victims of our emotions,” Mr. Mischel says. “We have a prefrontal cortex that allows us to evaluate whether or not we like the emotions that are running us.
  • Self-control alone doesn’t guarantee success. People also need a “burning goal” that gives them a reason to activate these skills, he says. His students all have the sitzfleisch to get into graduate school, but the best ones also have a burning question they want to answer in their work, sometimes stemming from their own lives
  • His secret seems to come straight from the marshmallow test: distraction. “It’s to keep living in a way one wants to live and work; to distract constructively; to distract in ways that are in themselves satisfying; to do things that are intrinsically gratifying,” he says
charlottedonoho

Children used to be scared of the dark - now they fear failure | Life and style | The G... - 0 views

  • I recently asked one of my youngest daughters what she feared most. She answered without hesitation: failure. This disturbed and surprised me. I had always thought of fear of failure as an adult preoccupation, but it seems that one of the effects of the climate of the times (and the media saturation that expresses it) is the importation of adult fears to childish minds. The fear of ghosts is being replaced by the terror of underperformance.
  • In this survey, from Johns Hopkins University in Baltimore, the top five fears 30 years ago were animals, being in a dark room, high places, strangers and loud noises. In the updated survey, kids were afraid of divorce, nuclear war, cancer, pollution, and being mugged.
  • Children’s fears are a litmus test of the society we live in and they are clearly changing – becoming more concrete – as society becomes more performance-driven, insecure and saturated with threatening, upsetting facts.
jlessner

Mounting Evidence of Advantages for Children of Working Mothers - NYTimes.com - 0 views

  • Nearly three-quarters of American mothers with children at home are employed. That fact doesn’t necessarily make it any easier for mothers to drop a toddler at day care or miss school plays. The mommy wars might seem like a relic of the 1990s, but 41 percent of adults say the increase in working mothers is bad for society, while just 22 percent say it is good, according to the Pew Research Center.
  • Yet evidence is mounting that having a working mother has some economic, educational and social benefits for children of both sexes.
  • In a new study of 50,000 adults in 25 countries, daughters of working mothers completed more years of education, were more likely to be employed and in supervisory roles and earned higher incomes. Having a working mother didn’t influence the careers of sons, which researchers said was unsurprising because men were generally expected to work — but sons of working mothers did spend more time on child care and housework.
  • ...1 more annotation...
  • Here, daughters of working mothers earned 23 percent more than daughters of stay-at-home mothers, after controlling for demographic factors, and sons spent seven and a half more hours a week on child care and 25 more minutes on housework.
jlessner

Our Biased Brains - NYTimes.com - 1 views

  • To better understand the roots of racial division in America, think about this:The human brain seems to be wired so that it categorizes people by race in the first one-fifth of a second after seeing a face. Brain scans show that even when people are told to sort people by gender, the brain still groups people by race.
  • Racial bias also begins astonishingly early: Even infants often show a preference for their own racial group. In one study, 3-month-old white infants were shown photos of faces of white adults and black adults; they preferred the faces of whites. For 3-month-old black infants living in Africa, it was the reverse.
  • Scholars suggest that in evolutionary times we became hard-wired to make instantaneous judgments about whether someone is in our “in group” or not — because that could be lifesaving. A child who didn’t prefer his or her own group might have been at risk of being clubbed to death.
  • ...2 more annotations...
  • “It’s a feature of evolution,” says Mahzarin Banaji, a Harvard psychology professor who co-developed tests of unconscious biases. These suggest that people turn out to have subterranean racial and gender biases that they are unaware of and even disapprove of.
  • What’s particularly dispiriting is that this unconscious bias among whites toward blacks seems just as great among preschoolers as among senior citizens.
Javier E

Americans Are Finally Eating Less - The New York Times - 0 views

  • Outside of beverages, there are few clear trends. Experts who have examined the data say the reductions do not mean that Americans are flocking to farmer’s markets and abandoning fast food. Consumption of fruits and vegetables remains low; consumption of desserts remains high. Instead, people appear to be eating a little less of everything. Although consumption in nearly every category has been “cut some,” said Mr. Popkin, “the food part of our diet is horrendous and remains horrendous.”
  • The calorie reductions are seen across nearly every demographic group, but not equally. White families have reduced their calorie consumption more than black and Hispanic families. Most starkly, families with children have cut back more than households with adults living alone, further evidence, experts say, that the public health emphasis on childhood obesity is driving the changes.
  • Perhaps the biggest caveat to the trend is that it does not appear to extend to the very heaviest Americans. Among the most overweight people, weight and waist circumference have all continued rising in recent years.
  • ...1 more annotation...
  • The recent calorie reductions appear to be good news, but they, alone, will not be enough to reverse the obesity epidemic. A paper by Kevin Hall, a researcher at the National Institutes of Health, estimated that for Americans to return to the body weights of 1978 by 2020, an average adult would need to reduce calorie consumption by 220 calories a day. The recent reductions represent just a fraction of that change.
Emilio Ergueta

Sartre & Peanuts | Issue 44 | Philosophy Now - 0 views

  • Nathan Radke claims that Charlie Brown is an existentialist.
  • Our anti-hero sits, despondent. He is alone, both physically and emotionally. He is alienated from his peers. He is fearfully awaiting a punishment for his actions. In desperation, he looks to God for comfort and hope. Instead, his angst overwhelms him, and manifests itself as physical pain. There is no comfort to be found.
  • When we are exposed to something every day we can eventually lose sight of its brilliance. Newspaper readers have been exposed to Charles Schulz’s comic strip ‘Peanuts’ for over half a century. Even now, a few years after Schulz died, many newspapers continue to carry reruns of his strips, and bookstores offer Peanuts collections
  • ...4 more annotations...
  • Charlie Brown was no comic strip missionary, blandly spreading the word of organized religion. Upon reflection, the trials and tribulations of the little round-headed kid provide deep and moving illustrations of existentialism.
  • Like the existential human in a world of silent or absent deities, Schulz’s characters exist in a world of silent or absent adult authority. In fact, the way the strip is drawn (with the child characters taking up most of each frame) actually prevents the presence of any adults.
  • Sartre did not deny the existence of God triumphantly. Instead, he considered it “... extremely embarrassing that God does not exist, for there disappears all possibility of finding values in an intelligible heaven.”. Without God, everything we do as humans is absurd, and without meaning
  • we are created by our actions. We are responsible for our actions. Therefore, we are responsible for our creation. What we are is the sum total of what we have done, nothing more and nothing less
Javier E

The Bilingual Advantage - NYTimes.com - 0 views

  • We found that if you gave 5- and 6-year-olds language problems to solve, monolingual and bilingual children knew, pretty much, the same amount of language.
  • The bilinguals, we found, manifested a cognitive system with the ability to attend to important information and ignore the less important.
  • There’s a system in your brain, the executive control system. It’s a general manager. Its job is to keep you focused on what is relevant, while ignoring distractions. It’s what makes it possible for you to hold two different things in your mind at one time and switch between them. If you have two languages and you use them regularly, the way the brain’s networks work is that every time you speak, both languages pop up and the executive control system has to sort through everything and attend to what’s relevant in the moment. Therefore the bilinguals use that system more, and it’s that regular use that makes that system more efficient.
  • ...5 more annotations...
  • we found that normally aging bilinguals had better cognitive functioning than normally aging monolinguals. Bilingual older adults performed better than monolingual older adults on executive control tasks.
  • On average, the bilinguals showed Alzheimer’s symptoms five or six years later than those who spoke only one language. This didn’t mean that the bilinguals didn’t have Alzheimer’s. It meant that as the disease took root in their brains, they were able to continue functioning at a higher level. They could cope with the disease for longer.
  • You have to use both languages all the time. You won’t get the bilingual benefit from occasional use.
  • One would think bilingualism might help with multitasking — does it? A. Yes, multitasking is one of the things the executive control system handles.
  • One of the things we’ve seen is that on certain kinds of even nonverbal tests, bilingual people are faster. Why? Well, when we look in their brains through neuroimaging, it appears like they’re using a different kind of a network that might include language centers to solve a completely nonverbal problem. Their whole brain appears to rewire because of bilingualism.
Javier E

Roots of Memory Aren't Fully Developed Until Adulthood - NYTimes.com - 1 views

  • Although memory performance generally improved with age, the ability to trace the source of a memory — evaluated by the second test — was particularly weak in children. Adolescents and adults performed equally well, but with a significant difference.
  • The participants wore electroencephalogram caps that measured their neural activity. Only adults showed a sophisticated pattern of activity when they were retrieving source memory information
  • when children and adolescents are asked to testify, the reliability of their source memory — for example, recalling the first time a certain person was encountered, and where — should be carefully questioned.
  •  
    That's insane!! Now, when the author says " the ability to remember the origin of memories," is he referring to the actual experience when information was received and the context it was in, or just the manner that the information was received, like the WOK? I'm still not clear on that.
Javier E

The Cheapest Generation - The Atlantic - 0 views

  • today’s young people simply don’t drive like their predecessors did. In 2010, adults between the ages of 21 and 34 bought just 27 percent of all new vehicles sold in America, down from the peak of 38 percent in 1985. Miles driven are down, too. Even the proportion of teenagers with a license fell, by 28 percent, between 1998 and 2008.
  • What if Millennials’ aversion to car-buying isn’t a temporary side effect of the recession, but part of a permanent generational shift in tastes and spending habits? It’s a question that applies not only to cars, but to several other traditional categories of big spending—most notably, housing. And its answer has large implications for the future shape of the economy—and for the speed of recovery.
  • Half of a typical family’s spending today goes to transportation and housing
  • ...9 more annotations...
  • Millennials have turned against both cars and houses in dramatic and historic fashion. Just as car sales have plummeted among their age cohort, the share of young people getting their first mortgage between 2009 and 2011 is half what it was just 10 years ago
  • he Great Recession is responsible for some of the decline. But it’s highly possible that a perfect storm of economic and demographic factors—from high gas prices, to re-­urbanization, to stagnating wages, to new technologies enabling a different kind of consumption—has fundamentally changed the game for Millennials
  • The emergence of the “sharing economy”—services that use the Web to let companies and families share otherwise idle goods—is headlined by Zipcar, but it also involves companies such as Airbnb, a shared market­place for bedrooms and other accommodations for travelers; and thred­UP, a site where parents can buy and sell kids’ used clothing.
  • tech­nology is allow­ing these practices to go mainstream, and that represents a big new step for consumers. For decades, inventory manage­ment was largely the province of companies, not individuals,
  • today, peer-to-peer software and mobile technology allow us all to have access, just when we need it, to the things we used to have to buy and hold. And the most powerful application is for cars.
  • Car ownership, meanwhile, has slipped down the hierarchy of status goods for many young adults. “Zipcar conducted a survey of Millennials,
  • “And this generation said, ‘We don’t care about owning a car.’ Cars used to be what people aspired to own. Now it’s the smartphone.”
  • Smartphones compete against cars for young people’s big-ticket dollars, since the cost of a good phone and data plan can exceed $1,000 a year. But they also provide some of the same psychic benefits—opening new vistas and carrying us far from the physical space in which we reside. “You no longer need to feel connected to your friends with a car
  • mobile technology has empowered more than just car-sharing. It has empowered friendships that can be maintained from a distance. The upshot could be a continuing shift from automobiles to mobile technology, and a big reduction in spending.
« First ‹ Previous 41 - 60 of 284 Next › Last »
Showing 20 items per page