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It is possible to examine any object—including a brain—at different levels

if we want to know how the brain gives rise to thoughts, feelings, and behaviors, we want to focus on the bigger picture of how its structure allows it to store and process information—the architecture, as it were. To understand the brain at this level, we don’t have to know everything about the individual connections among brain cells or about any other biochemical process.

top parts and the bottom parts of the brain have differ­ent functions. The top brain formulates and executes plans (which often involve deciding where to move objects or how to move the body in space), whereas the bottom brain classifies and interprets incoming information about the world. The two halves always work together;

Even the most fanatical pedant must admit that usage is the ultimate arbiter of linguistic propriety. That is to say, a word means a certain thing because significant numbers of people take it to mean a certain thing. An informal process has evolved to monitor any shift in definition. At one end of the spectrum we meet words that will, from time to time, be “mistakenly” used in a way that does not conform to the dictionary definition. A chap might write “limpid” when he means “flaccid”. This still counts as an error. At the other end, we encounter words that, after decades of squabbling, have had their meaning formally transformed. Classical scholars will tell you that, derived from a term used by the Roman military, “decimate” used to mean the killing of one in 10 of any accused group. Now, we take it to mean the same as “annihilate” (which itself used to mean “make null and void”). The really interesting, contentious words can be found in the middle section of the spectrum.

This has led me to a theory that there are two types of emailers in the world: Those who can comfortably ignore unread notifications, and those who feel the need to take action immediately.

Gloria Mark, a professor of informatics at University of California, Irvine, has explored just this sort of question. A few years ago, she ran a study in which office workers were cut off from using email for one workweek and were equipped with heart-rate monitors; on average, going cold turkey significantly reduced their stress levels.

After interviewing several people about their relationship with email, Mark has noticed that, for some people, email is an extension of autonomy—it's about having control.

The most recent figures, from the 2013-14 academic year, show that 274,000 international students in the US hailed from China - far more than from any other country.

"I want to go where I can learn whatever I want"

China has seen a rapid development of international schools in recent years, showing the country's growing demand for a Western-style education.

Facial recognition technology, already employed by some retail stores to spot and thwart shoplifters, may soon be used to identify and track the freest spenders in the aisles.

And companies like FaceFirst, in Camarillo, Calif., hope to soon complement their shoplifter-identification services with parallel programs to help retailers recognize customers eligible for special treatmen

. “Instantly, when a person in your FaceFirst database steps into one of your stores, you are sent an email, text or SMS alert that includes their picture and all biographical information of the known individual so you can take immediate and appropriate action.”

MOSCOW — TWO years ago today, three journalists and I worked nervously in a Hong Kong hotel room, waiting to see how the world would react to the revelation that the National Security Agency had been making records of nearly every phone call in the United States. In the days that followed, those journalists and others published documents revealing that democratic governments had been monitoring the private activities of ordinary citizens who had done nothing wrong.

Privately, there were moments when I worried that we might have put our privileged lives at risk for nothing — that the public would react with indifference, or practiced cynicism, to the revelations.

Since 2013, institutions across Europe have ruled similar laws and operations illegal and imposed new restrictions on future activities. The United Nations declared mass surveillance an unambiguous violation of human rights. In Latin America, the efforts of citizens in Brazil led to the Marco Civil, an Internet Bill of Rights. Recognizing the critical role of informed citizens in correcting the excesses of government, the Council of Europe called for new laws to protect whistle-blowers.

Back in 2007, after a series of mostly ineffective treatments prescribed by doctors, Ms. Enders, then 17, decided to take matters into her own hands. Convinced that the illness was somehow associated with her intestines, she pored over gastroenterological research, consumed probiotic bacterial cultures meant to aid digestion and tried out mineral supplements.

The experiments worked (although she is not sure which one did the trick), leaving her with healthy skin and a newfound interest in her intestines. “I experienced with my own body that knowledge is power,” she writes of the episode in “Gut: The Inside Story of Our Body’s Most Underrated Organ,”

growing body of research indicating that our intestines may have a far greater influence on our feelings, decisions and behavior than previously realized. The primary evidence for this, Ms. Enders writes, is the vast network of nerves attached to our guts that monitors our deepest internal experiences and sends information to the brain, including to those regions responsible for self-awareness, memory and even morality.

The American Psychological Association on Friday overwhelmingly approved a new ban on any involvement by psychologists in national security interrogations conducted by the United States government, even noncoercive interrogations now conducted by the Obama administration.

The ban was approved by the association’s council by a vote of 156 to 1. Seven council members abstained, while one was recused.

The ban passed on Friday says that “psychologists shall not conduct, supervise, be in the presence of, or otherwise assist any national security interrogations for any military or intelligence entities, including private contractors working on their behalf, nor advise on conditions of confinement insofar as these might facilitate such an interrogation.” The measure’s backers added language on Friday that stated that psychologists may consult with the government on broad interrogation policy, but may not get involved in any specific interrogation or consult on the specific detention conditions for detainees.

Is this a good thing, I wondered, or an epic waste of time?

Twitter devotees at The Times tell me the benefits are real. Twitter enables them to be better reporters, for one thing. By selecting a universe of tweeters to follow, they can track news sources of all kinds, including rival journalists. They can create listening posts across every topic they need to monitor.

I don’t read everything. I dip into Twitter when I have time. The analogy is a cocktail party. You can’t join every conversation, but you drift through the crowd and stop now and then.”

a number of "social X-ray specs" that are set to transform how we interact with each other. By sensing emotions that we would otherwise miss, these technologies can thwart disastrous social gaffes and help us understand each other better.

In conversation, we pantomime certain emotions that act as social lubricants. We unconsciously nod to signal that we are following the other person's train of thought, for example, or squint a bit to indicate that we are losing track. Many of these signals can be misinterpreted - sometimes because different cultures have their own specific signals.

n 2005, she enlisted Simon Baron-Cohen, also at Cambridge, to help her identify a set of more relevant emotional facial states. They settled on six: thinking, agreeing, concentrating, interested - and, of course, the confused and disagreeing expressions

11 experiments. In most, they asked participants to put away any distractions and entertain themselves with their own thoughts for 6 to 15 minutes

Over the first six studies, 58 percent of participants rated the difficulty at or above the midpoint on a scale (“somewhat”), and 42 percent rated their enjoyment below the midpoint

Participants rated the task of entertaining themselves with their own thoughts as far less enjoyable and more conducive to mind-wandering than other mellow activities such as reading magazines or doing crossword puzzles.

Ebola tests in Edinburgh for patient who recently returned from west Africa

A woman who recently returned from west Africa is being tested for Ebola at a hospital in Edinburgh.

However, there has been no confirmation that she is suffering from the

When you whack yourself with a hammer, it feels like the pain is in your thumb. But really it's in your brain.

perception of pain is shaped by brain circuits that are constantly filtering the information coming from our sensory nerves,

In 2003, Turner was unloading supplies when his unit came under attack. He was wounded by a grenade. "He took shrapnel in his leg, in his side — and he didn't even notice that he had been hit,"

as human behavior is tracked and merchandized on a massive scale, the Internet of Things creates the perfect conditions to bolster and expand the surveillance state.

In the world of the Internet of Things, your car, your heating system, your refrigerator, your fitness apps, your credit card, your television set, your window shades, your scale, your medications, your camera, your heart rate monitor, your electric toothbrush, and your washing machine—to say nothing of your phone—generate a continuous stream of data that resides largely out of reach of the individual but not of those willing to pay for it or in other ways commandeer it.

That is the point: the Internet of Things is about the “dataization” of our bodies, ourselves, and our environment. As a post on the tech website Gigaom put it, “The Internet of Things isn’t about things. It’s about cheap data.

I talked to a half-dozen of Hugh Moren’s fellow students. A highly indebted senior who was terrified of the weak job market described George Washington, where he had invested considerable time getting and doing internships, as “the world’s most expensive trade school.” Another mentioned the abundance of rich students whose parents were giving them a fancy-sounding diploma the way they might a new car. There are serious students here, he acknowledged, but: “You can go to G.W. and essentially buy a degree.”

A recent study from the Organization for Economic Cooperation and Development found that, on average, American college graduates score well below college graduates from most other industrialized countries in mathematics. In literacy (“understanding, evaluating, using and engaging with written text”), scores are just average. This comes on the heels of Richard Arum and Josipa Roksa’s “Academically Adrift,” a study that found “limited or no learning” among many college students.Instead of focusing on undergraduate learning, nu

colleges have been engaged in the kind of building spree I saw at George Washington. Recreation centers with world-class workout facilities and lazy rivers rise out of construction pits even as students and parents are handed staggeringly large tuition bills. Colleges compete to hire famous professors even as undergraduates wander through academic programs that often lack rigor or coherence. Campuses vie to become the next Harvard — or at least the next George Washington — while ignoring the growing cost and suspect quality of undergraduate education.

The experiment shows that it is now possible for people to create their perfect dream, and so wake up feeling especially happy and refreshed

an iPhone app that monitors a person during sleep and plays a carefully crafted 'soundscape' when they dream. Each soundscape was carefully designed to evoke a pleasant scenario, such as a walk in the woods, or lying on a beach, and the team hoped that these sounds would influence people's dreams

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.

More 5inShare Email Print A defendant in the Atlanta Public Schools case turns herself in at the Fulton County Jail on April 2. (David Goldman/AP) Earlier this week at The Atlantic, Emily Richmond asked whether high-stakes testing caused the Atlanta schools cheating scandal. The answer, I would argue, is yes... just not in the way you might think. Tests don't cause unethical behavior. But they did cause the Atlanta cheating scandal, and they are doing damage to the teaching profession. The argument that tests do not cause unethical behavior is fairly straightforward, and has been articulated by a number of writers. Jonathan Chait quite correctly points out that unethical behavior occurs in virtually all professions -- and that it occurs particularly when there are clear incentives to succeed. Incentivizing any field increases the impetus to cheat. Suppose journalism worked the way teaching traditionally had. You get hired at a newspaper, and your advancement and pay are dictated almost entirely by your years on the job, with almost no chance of either becoming a star or of getting fired for incompetence. Then imagine journalists changed that and instituted the current system, where you can get really successful if your bosses like you or be fired if they don't. You could look around and see scandal after scandal -- phone hacking! Jayson Blair! NBC's exploding truck! Janet Cooke! Stephen Glass! -- that could plausibly be attributed to this frightening new world in which journalists had an incentive to cheat in order to get ahead. It holds true of any field. If Major League Baseball instituted tenure, and maybe used tee-ball rules where you can't keep score and everybody gets a chance to hit, it could stamp out steroid use. Students have been cheating on tests forever -- massive, systematic cheating, you could say. Why? Because they have an incentive to do well. Give teachers and administrators an incentive for their students to do well, and more of them will cheat. For Chait, then, teaching has just been made more like journalism or baseball; it has gone from an incentiveless occupation to one with incentives.

Chait refers to violations of journalistic ethics -- like the phone-hacking scandal -- and suggests they are analogous to Major-League steroid use, and that both are similar to teachers (or students) cheating on tests. But is phone hacking "cheating"

Phone hacking was, then, not an example of cheating. It was a violation of professional ethics. And those ethics are not arbitrarily imposed, but are intrinsic to the practice of journalism as a profession committed to public service and to truth.

Rosenstein belongs to a small but growing band of Silicon Valley heretics who complain about the rise of the so-called “attention economy”: an internet shaped around the demands of an advertising economy.

“It is very common,” Rosenstein says, “for humans to develop things with the best of intentions and for them to have unintended, negative consequences.”

most concerned about the psychological effects on people who, research shows, touch, swipe or tap their phone 2,617 times a day.

The smartphone has become a repository of the self, recording and dispensing the words, sounds and images that define what we think, what we experience and who we are. In a 2015 Gallup survey, more than half of iPhone owners said that they couldn’t imagine life without the device.

So what happens to our minds when we allow a single tool such dominion over our perception and cognition?

Not only do our phones shape our thoughts in deep and complicated ways, but the effects persist even when we aren’t using the devices. As the brain grows dependent on the technology, the research suggests, the intellect weakens.