Questões de Concursos Inglês

T E X T

Can you learn in your sleep?

Sleep is known to be crucial for learning and memory formation. What's more, scientists have even managed to pick out specific memories and consolidate them during sleep. However, the exact mechanisms behind this were unknown — until now.

Those among us who grew up with the popular cartoon "Dexter's Laboratory" might remember the famous episode wherein Dexter's trying to learn French overnight. He creates a device that helps him to learn in his sleep by playing French phrases to him. Of course, since the show is a comedy, Dexter's record gets stuck on the phrase "Omelette du fromage" and the next day he's incapable of saying anything else. This is, of course, a problem that puts him through a series of hilarious situations.

The idea that we can learn in our sleep has captivated the minds of artists and scientists alike; the possibility that one day we could all drastically improve our productivity by learning in our sleep is very appealing. But could such a scenario ever become a reality?

New research seems to suggest so, and scientists in general are moving closer to understanding precisely what goes on in the brain when we sleep and how the restful state affects learning and memory formation.

For instance, previous studies have shown that non-rapid eye movement (non-REM) sleep — or dreamless sleep — is crucial for consolidating memories. It has also been shown that sleep spindles, or sudden spikes in oscillatory brain activity that canbe seen on an electroencephalogram (EEG) during the second stage of non-REM sleep, are key for this memory consolidation. Scientists were also able to specifically target certain memories and reactivate, or strengthen, them by using auditory cues.

However, the mechanism behind such achievements remained mysterious until now. Researchers were also unaware if such mechanisms would help with memorizing new information.

Therefore, a team of researchers set out to investigate. Scott Cairney, from the University of York in the United Kingdom, co-led the research with Bernhard Staresina, who works at the University of Birmingham, also in the U.K. Their findings were published in the journal Current Biology.

Cairney explains the motivation for the research, saying, "We are quite certain that memories are reactivated in the brain during sleep, but we don't know the neural processes that underpin this phenomenon." "Sleep spindles," he continues, "have been linked to the benefits of sleep for memory in previous research, so we wanted to investigate whether these brain waves mediate reactivation. If they support memory reactivation, we further reasoned that it could be possible to decipher memory signals at the time that these spindles took place."

To test their hypotheses, Cairney and his colleagues asked 46 participants "to learn associations between words and pictures of objects or scenes before a nap." Afterward, some of the participants took a 90-minute nap, whereas others stayed awake. To those who napped, "Half of the words were [...] replayed during the nap to trigger the reactivation of the newly learned picture memories," explains Cairney.

"When the participants woke after a good period of sleep," he says, "we presented them again with the words and asked them to recall the object and scene pictures. We found that their memory was better for the pictures that were connected to the words that were presented in sleep, compared to those words that weren't," Cairney reports.

Using an EEG machine, the researchers were also able to see that playing the associated words to reactivate memories triggered sleep spindles in the participants' brains. More specifically, the EEG sleep spindle patterns "told" the researchers whether the participants were processing memories related to objects or memories related to scenes.

"Our data suggest that spindles facilitate processing of relevant memory features during sleep and that this process boosts memory consolidation," says Staresina. "While it has been shown previously," he continues, "that targeted memory reactivation can boost memory consolidation during sleep, we now show that sleep spindles might represent the key underlying mechanism."

Cairney adds, "When you are awake you learn new things, but when you are asleep you refine them, making it easier to retrieve them and apply them correctly when you need them the most. This is important for how we learn but also for how we might help retain healthy brain functions."

Staresina suggests that this newly gained knowledge could lead to effective strategies for boosting memory while sleeping.

So, though learning things from scratch à la "Dexter's Lab" may take a while to become a reality, we can safely say that our brains continue to learn while we sleep, and that researchers just got a lot closer to understanding why this happens.

From: https://www.medicalnewstoday.com/articles/Mar/2018

T E X T

Can you learn in your sleep?

Sleep is known to be crucial for learning and memory formation. What's more, scientists have even managed to pick out specific memories and consolidate them during sleep. However, the exact mechanisms behind this were unknown — until now.

Those among us who grew up with the popular cartoon "Dexter's Laboratory" might remember the famous episode wherein Dexter's trying to learn French overnight. He creates a device that helps him to learn in his sleep by playing French phrases to him. Of course, since the show is a comedy, Dexter's record gets stuck on the phrase "Omelette du fromage" and the next day he's incapable of saying anything else. This is, of course, a problem that puts him through a series of hilarious situations.

The idea that we can learn in our sleep has captivated the minds of artists and scientists alike; the possibility that one day we could all drastically improve our productivity by learning in our sleep is very appealing. But could such a scenario ever become a reality?

New research seems to suggest so, and scientists in general are moving closer to understanding precisely what goes on in the brain when we sleep and how the restful state affects learning and memory formation.

For instance, previous studies have shown that non-rapid eye movement (non-REM) sleep — or dreamless sleep — is crucial for consolidating memories. It has also been shown that sleep spindles, or sudden spikes in oscillatory brain activity that canbe seen on an electroencephalogram (EEG) during the second stage of non-REM sleep, are key for this memory consolidation. Scientists were also able to specifically target certain memories and reactivate, or strengthen, them by using auditory cues.

However, the mechanism behind such achievements remained mysterious until now. Researchers were also unaware if such mechanisms would help with memorizing new information.

Therefore, a team of researchers set out to investigate. Scott Cairney, from the University of York in the United Kingdom, co-led the research with Bernhard Staresina, who works at the University of Birmingham, also in the U.K. Their findings were published in the journal Current Biology.

Cairney explains the motivation for the research, saying, "We are quite certain that memories are reactivated in the brain during sleep, but we don't know the neural processes that underpin this phenomenon." "Sleep spindles," he continues, "have been linked to the benefits of sleep for memory in previous research, so we wanted to investigate whether these brain waves mediate reactivation. If they support memory reactivation, we further reasoned that it could be possible to decipher memory signals at the time that these spindles took place."

To test their hypotheses, Cairney and his colleagues asked 46 participants "to learn associations between words and pictures of objects or scenes before a nap." Afterward, some of the participants took a 90-minute nap, whereas others stayed awake. To those who napped, "Half of the words were [...] replayed during the nap to trigger the reactivation of the newly learned picture memories," explains Cairney.

"When the participants woke after a good period of sleep," he says, "we presented them again with the words and asked them to recall the object and scene pictures. We found that their memory was better for the pictures that were connected to the words that were presented in sleep, compared to those words that weren't," Cairney reports.

Using an EEG machine, the researchers were also able to see that playing the associated words to reactivate memories triggered sleep spindles in the participants' brains. More specifically, the EEG sleep spindle patterns "told" the researchers whether the participants were processing memories related to objects or memories related to scenes.

"Our data suggest that spindles facilitate processing of relevant memory features during sleep and that this process boosts memory consolidation," says Staresina. "While it has been shown previously," he continues, "that targeted memory reactivation can boost memory consolidation during sleep, we now show that sleep spindles might represent the key underlying mechanism."

Cairney adds, "When you are awake you learn new things, but when you are asleep you refine them, making it easier to retrieve them and apply them correctly when you need them the most. This is important for how we learn but also for how we might help retain healthy brain functions."

Staresina suggests that this newly gained knowledge could lead to effective strategies for boosting memory while sleeping.

So, though learning things from scratch à la "Dexter's Lab" may take a while to become a reality, we can safely say that our brains continue to learn while we sleep, and that researchers just got a lot closer to understanding why this happens.

From: https://www.medicalnewstoday.com/articles/Mar/2018

Mauritius: gender roles and statuses

Division of Labor by Gender. The economic success of industry has led to low unemployment rates. This has changed the workplace and home life as women joined the workforce. This industrialization also led to women being promoted faster. According to the Minister of Women, Family Welfare, and Child Development, a quarter of all managers are now women.

Women are the traditional homekeepers of the society. Between 1985 and 1991 the number of women working outside the home increased from 22 percent to 41 percent. With that trend continuing, hired housekeeping and child care have become relatively new and important industries.

The Relative Status of Women and Men. Historically, women have had subordinate roles in Mauritian society. However, the Constitution specifically prohibits discrimination based on sex, and women now have access to education, employment, and governmental services.

In March 1998 the Domestic Violence Act was passed. This gave greater protection and legal authority to combat domestic abuse. In that same year it also became a crime to abandon one's family or pregnant spouse for more than two months, not to pay food support, or to engage in sexual harassment.

Women are underrepresented in the government. The National Assembly has seventy seats, of which women hold five.

Disponível em: www.everyculture.com. Acesso em: 4 fev. 2013.

TEXT 1

These days, when our slow recovery from recession seems like a full-employment program for pessimistic pundits, it’s great to have a new book from Chris Anderson, an indefatigable cheerleader for the unlimited potential of the digital economy. Anderson, the departing editor in chief of Wired magazine, has already written two important books exploring the impact of the Web on commerce. In “The Long Tail,” he argued that companies like Amazon that faced distribution challenges arising from having large quantities of the same kind of product would thrive by “selling less of more.” Corporations didn’t have to chase blockbusters if they had a mass of small sales. In “Free: The Future of a Radical Price,” he argued that giving stuff away to attract a multitude of users might be the best way eventually to make money from loyal customers. Anderson has also helped found a Web site, Geekdad, and an aerial roboticscompany. From his vantage point, in the future more and more people can get involved in making things they really enjoy and can connect with others who share their passions and their products. These connections, he claims, are creating a new Industrial Revolution.

In a 2010 Wired article entitled “In the Next Industrial Revolution, Atoms Are the New Bits,” Anderson described how the massive changes in our relations with information have altered how we relate to things. Now that the power of information-sharing has been unleashed through technology and social networks, makers are able to collaborate on design and production in ways that facilitate the connection of producers to markets. By sharing information “bits” in a creative commons, entrepreneurs are making new things (reshaping “atoms”) more cheaply and quickly. The new manufacturing is a powerful economic force not because any one business becomes gigantic, but because technology makes it possible for tens of thousands of businesses to find their customers, to form their communities.

Anderson begins his new book, “Makers,” with the story of his grandfather Fred Hauser, who invented a sprinkler system. He licensed his invention to a company that turned ideas into things that could be built and sold. Although Hauser loved translating ideas into things, he needed a company with resources to make enough of his sprinklers to turn a profit. Inventing and making were separate. With the advent of the personal computer and of sophisticated but user-friendly design tools, that separation has become increasingly irrelevant. As a child, Anderson loved making things with his grandfather, and he still loves creating new stuff and getting it into the marketplace. “Makers” describes how today technology has liberated the inventor from a dependence on the big manufacturer. “The beauty of the Web is that it democratized the tools both of invention andproduction,” Anderson writes. “We are all designers now. It’s time to get good at it.”

(Fragment from “Makers: The New Industrial Revolution by Chris Anderson”, by Michael S. Roth. Online since 24 November 2012. URL:https://www.washingtonpost.com/opinions/makers-thenew-industrial-revolution)

INSTRUCTION: Read the following text to answer question.

Do Leveled Books Have Any Place in the Classroom?

“The little turtle can see the grass. The little turtle can see the trees. The little turtle can see the flowers”. These are the opening lines to one popular reading program’s leveled books: short, predictable texts designed for beginning readers. The patterned sentence structure – centered on the phrase “the little turtle can see" – invites students to rely on repetition and context clues to identify words they can’t sound out.

Leveled books have been a staple in early elementary reading instruction for more than two decades. But as the “science of reading” movement has spread, leveled books have come under fire. Initially, they encourage students to guess at words rather than use their phonics skills, researchers say, which can prevent children from mapping the letter-sound connections that allow them to become fluent readers.

A second problem is how they sort students into levels. Studies have shown that leveling systems are frequently inaccurate. These systems are usually created by the books’ publishers, which purport to match students with books that have a just-right alignment with their reading comprehension abilities.

In classrooms that are switching to a science of reading approach, educators are now wary of leveled books, because of the damage that they did, said Wiley Blevins, an educational consultant. In his opinion, when children are still learning the code of written language, it is required a “tight connection” between the letter-sound correspondences they’re learning and the text they’re reading, so that they have opportunities to practice. But leveled texts can’t do this job. Blevins said that the textdifficulty levels also don’t offer much practical use because they don’t tell educators what skills students still need to master – which doesn’t necessarily mean kids can’t ever pick up these books.

But what are leveled texts anyway? In many of the most popular reading programs of the last decade, leveled readers were some of the main texts that children worked with. Teachers used books for instruction, grouping students by their level and assigning them reading strategies to practice in the text. They have also been used for assessment since teachers listened to students read these books aloud, keeping a running record of their errors.

Publishers claimed that the text-leveling system could match students with books that were just right for their abilities – challenging enough to help them practice new skills, but not so challenging as to be frustrating or inaccessible. This idea is based on outdated theories about how children learn. Studies show that students can read books that are above their level with teacher and peer-provided support. They also indicate that restricting students to text at lower reading levels can actually widen achievement gaps.

However, other research has found that the leveling system isn’t even that accurate. A 2014 study showed that data from leveling assessments correctly predicted students’ reading ability only about 50 percent of the time.

The big problem with these books, though, is that they don’t help students develop their decoding skills, that is, their ability to sound out words by connecting letters tospoken sounds, said Kari Kurto, the National Science of Reading Project director at The Reading League – a group that advocates for evidence-based reading policy and classroom practice. Kurto complemented by saying that many of the words in these books aren’t written with constrained sound-spelling patterns, so “there’s no other strategy that a kid can use other than guessing,” Kurto said.

With all of this being said, one question pops up: how teachers can repurpose leveled readers?

As some districts have shifted their reading instructional practice, they have moved from leveled to decodable text – books written to give students practice with the letter-sound correspondences that they are learning in phonics lessons. However, decodable books shouldn’t be the only books that students ever see because at some point they will have to move on to more complex literature, said Blevins. In his point of view, teachers shouldn’t worry about matching students with a particular level, but rather see if they can find books that include some phonics patterns children know.

But can leveled texts build background knowledge? Some educators have repurposed leveled texts in a different way, using them to help students develop content knowledge about a subject. Research shows that students’ background knowledge is a key component of their reading comprehension ability.

According to Kurto, having more books available that might tap into kids’ different interests is valuable. Still, she draws the attention to the fact that many leveled books are written with simple themes and basic vocabulary and syntax. She said, “a lot of the leveled texts are just a little fluffy. If all [students are] getting beyond decodable text is leveled text, then it’s likely that they’re not being exposed to high-quality language and language structures.”

Although the debate about this matter is extensive and opinions are diverse, one thing is worth keeping in mind: what students read in class really matters.

Source: https://www.edweek.org/teaching-learning/doleveled-books-have-any-place-in-the-classroom/2024/10 Accessed on November 13, 2024. [Adapted]

Fake news could ruin social media, but there’s still hope

by: Guðrun í Jákupsstovu

Camille Francois, director of research and analysis at Graphika, told the audience of her talk at TNW Conference:

“Disinformation campaigns, or fake news is a concept we’ve known about for years, but few people realize how varied the concept can be and how many forms it comes in. When the first instances of fake news started to surface, they were connected with bots. These flooded conversations with alternative stories in order to create noise and, in turn, silence what was actually being said”.

According to Francois, today’s disinformation campaigns are far more varied than just bots – and much harder to detect. For example, targeted harassment campaigns are carried out against journalists and human-rights activists who are critical of governments or big organizations.

“We see this kind of campaigns happening at large scale in countries like the Philippines, Turkey, Ecuador, and Venezuela. The point of these campaigns is to flood the narrative these people try to create with so much noise that their original message gets silenced, their reputation gets damaged, and their credibility undermined. I call this patriotic trolling.”

There are also examples of disinformation campaigns mobilizing people. This was evident during the US elections in 2016 when many fake events suddenly started popping up on Facebook. One Russian Facebook page “organized” an anti-Islam event, while another “organized” a pro-Islam demonstration. The two fake events gathered activists to the same street in Texas, leading to a stand-off.

Francois explains how amazed she is that, in spite of social media being the main medium for these different disinformation campaigns, actual people also still use it to protest properly.

If we look at countries, like Turkey – where there’s a huge amount of censorship and smear campaigns directed at human right defenders and journalists – citizens around the world and in those places still use social media to denounce corruption, to organize human rights movements and this proves that we still haven’t lost the battle of who owns social media.

This is an ongoing battle, and it lets us recognize the actors who are trying to remove the option for people to use social media for good. But everyday you still have people all over the world turning to social media to support their democratic activities. This gives me hope and a desire to protect people’s ability to use social media for good, for denouncing corruption and protecting human rights.

Adapted from:<https://thenextweb.com/socialmedia/2018/05/25/>. Access 09 Oct. 2018.

Glossary

bot: (short for "robot"): um programa automático que roda na Internet; to flood: inundar; trolling: fazer postagem deliberadamente ofensiva para provocar alguém; popping up: surgir, aparecer; stand-off: impasse: smear campaigns: campanhas de difamação.

Texto para a questão

How to write, according to the bestselling novelist of all time

Everyone has a book inside them, or so the saying goes. In this day and age, those who want help coaxing the story out can receive instruction online from some of the world’s most popular authors. Lee Child and Harlan Coben, who have sold hundreds of millions of books between them, teach thriller writing; Jojo Moyes offers tips on romance yarns. And now Agatha Christie, the world’s bestselling writer of fiction, with more than 2 bn copies sold, is instructing viewers in the art of the whodunnit—even though she died in 1976.

Christie’s course is the result not of recently unearthed archival footage, but artificial intelligence. BBC Maestro, an online education platform, brought the idea to the Christie family, which still controls 36% of Agatha Christie Ltd (AMC Networks, an entertainment giant, owns the rest). They consented to bring the “Queen of Crime” back to life, to teach the mysterious flair of her style.

A team of almost 100—including Christie scholars as well as AI specialists—worked on the project. Vivien Keene, an actor, provided a stand-in for the author; Christie’s face was mapped on top. Crucially, Ms Keene’s eerily credible performance employs only Christie’s words: a tapestry of extracts from her own writings, notebooks and interviews.

In this way, the creator of Hercule Poirot and Miss Marple shares handy writing tips, such as the neatest ways to dispatch fictional victims. Firearms bring ballistic complications. Be wary of poisons, as each works in a unique way. Novice authors can “always rely on a dull blow to the head”.

Many of Christie’s writing rules concern playing fair. She practiced misdirection and laid “false clues” alongside true ones, but insisted that her plots do not cheat or hide key evidence: “I never deceive my readers.” In sections devoted to plot and setting, she explains how to plant key clues “in plain sight” and plan events with detailed “maps and diagrams”. She advises viewers to watch and listen to strangers on buses or in shops and to spice up motives for murder with a love triangle.

Some of the most engaging sections come from “An Autobiography”, published posthumously in 1977: Poirot’s origins among the Belgian refugees who reached Devon during the First World War, or fond memories of her charismatic, feckless brother Monty, who had “broken the laws of a lot of countries” and provided the inspiration for many of Christie’s “wayward young male figures”.

By relying on Christie’s own words, BBC Maestro hopes to avoid charges of creepy pedagogical deepfakery. At the same time, it is that focus on quotation which limits the course’s value as a creative-writing toolbox. The woman born Agatha Miller in 1890 speaks from her own time and place. She tells wannabe writers to use snowstorms to isolate murder scenes (as they bring down telephone wires) and cites the clue-generating value of railway timetables, ink stains and cut-up newspapers. These charming details are irrelevant to modern scribblers.

Yet anachronism is not the course’s biggest flaw: it is that it lacks vitality. Christie enjoyed a richer life than learners will glean from this prim phantom: she was a wartime nurse (hence her deep knowledge of toxins), thwarted opera singer, keen surfer and archaeological expert who joined her second husband on digs in Iraq. Furthermore, her juiciest mysteries smash crime-writing rules. The narrator does it; the detective does it; all the suspects do it. Sometimes there’s no detective: in “The Hollow” (1946) Christie regretted that Poirot appeared at all. With its working-class antihero and gothic darkness, “Endless Night” (1967) shatters every Christie cliché. This high-tech, retrofitted version of the author feels smaller and flatter than the ingenious original.

The Economist, May, 8th, 2025