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5 unusual, evidence-based ways to get better at a new language
It's hard not to conclude that if you act like a child, maybe you'll learn as effectively as a child, too…
The last time I tried to learn a foreign language, I was living in an Italian suburb of Sydney. My hour a week at a local Italian class was inevitably followed by a bowl of pasta and a few glasses of wine.
As an approach to language-learning goes, it was certainly more pleasurable than my German lessons at school. Despite the wine, it was also surprisingly effective. In fact, getting better at a new language doesn't have to mean hard hours on lists of vocab and the rules of grammar. It turns out that what you don't focus on matters, too. And a glass of wine may even help …
Listen to the language, even if you don't have a clue what's being said – and you're not even paying close attention
One challenging aspect to learning a new language is that it may contain distinct speech sounds that, as a non-speaker, you can't even tell apart. This isn't a problem for young children – they only need to spend time around the new language to learn to hear the different sounds, simply through passive exposure. It's long been thought adults can't do this, but a study published in 2019 brings a more optimistic message and has implications for the best approach to adult language learning.
The researchers asked native Finnish-speakers to listen to Mandarin speech sounds while engaged in other tasks, and to do this for two hours a day on four consecutive days. Critically, even when they were instructed to ignore the sounds and focus on a silent movie, recordings of their brain waves (via EEG) suggested they were getting better at differentiating between the different Mandarin speech sounds. "For the first time, these results demonstrated that mere passive exposure to sounds can induce plastic changes related to change detection in the adult human brain, which was previously thought to happen only in infancy during the sensitive period," the researchers wrote.
The researchers added that this suggests passive training may help real-life language learning. They recommend listening to a language you want to learn while you're doing something else (as long as it's not too cognitively demanding) – while working out at the gym, or while cooking, perhaps.
A passive approach to learning could also be especially beneficial to older adults in the context of remembering new vocab. A 2013 study led by Lynn Hasher at the University of Toronto showed that older adults have a greater tendency than younger adults to process distracting information. While this isn't usually helpful, it does make them more likely to remember background information. This suggests that after a session of deliberately learning new vocab, hearing those words played in the background could help with learning.
Don't try too hard with the grammar
Not only can children easily perceive the difference between a vast range of speech sounds, but they learn the grammar of a language more easily than adults too. It used to be thought that this advantage ends at about the age of seven. However, again the picture has become more optimistic of late. For instance, in 2018, a team involving Steven Pinker at Harvard University concluded that in fact, the advantage lasts about a decade longer. Once we reach adulthood though, it does become harder to get to grips with grammar and also the structural components of words in another language.
Part of the problem could be that adults' more highly developed cognitive skills work against them. Consider a 2014 study by Amy Finn at MIT and colleagues that found the harder adults worked at the structure and use of units of an artificial language – such as root words, suffixes and prefixes – the worse they did. To learn this language "morphology", "at least in this artificial language we created, it's actually worse when you try," Finn comments.
These findings supported a theory, put forward in 1990 by the linguist Elissa Newport, that adults struggle with this aspect of language-learning because they try to analyse too much information at once. So what can you do? If you're listening to another language, don't over-analyse it, Finn suggests. There was a condition in her study in which some of the participants had to complete an undemanding puzzle or do some colouring while they listened to the artificial language – and it's telling that it was this group who performed best at acquiring the new grammar. It's hard not to conclude that if you act like a child, maybe you'll learn as effectively as a child, too…
Choose the right time of day – or night – to learn
Outside more formal educational settings, a lot of language classes tend to take place in the evenings, but it's worth considering experimental findings that suggest this isn't an optimum time for everyone, especially older people and teenagers.
For example, in a 2014 study, Lynn Hasher and her team found that older adults (aged 60-82) were better able to focus, and tended to do better at memory tests, between 8.30am and 10.30am, compared with 1pm and 5pm. Scans of their brains suggested this was because by the afternoon, their "default mode network" was more active – a neural state indicative of daydreaming. Among young adults, however, other neural networks more associated with focused attention remained active into the afternoon.
Evening learning probably isn't ideal for teenagers either. In a study published in 2012, Johannes Holz at the University of Freiberg, and colleagues, found that 16- and 17-year-old girls performed better on tests of factual memory if they'd learned the material at 3pm than at 9pm.
However, another study, published in Psychological Science in 2016, suggests that evening learning can be beneficial – especially if you follow it with a decent night's sleep, and a follow-up session the next morning.
French-speaking participants were split into two groups: one learned the French translations of 16 Swahili words in the morning, returning for a second booster session that evening; the others learned the translations in the evening with a booster session the following morning.
The group that learned the vocab in the evening, slept and then studied again the next morning out-performed the other group on all kinds of memory tests. The overnight group showed virtually no forgetting after one week (unlike the same-day learners, who'd forgotten, on average, 4-5 of the translations), and by the second session, they'd forgotten less than the same-day learners and were quicker to re-learn anything that they hadn't remembered.
The researchers suspect that sleep soon after learning allowed for a greater consolidation of these memories than for the other group. The results suggest that scheduling two study periods, one for close to bed-time, the other soon for after waking, is an effective way to learn.
Take long breaks
The idea of taking as long a break as possible between learning some vocab and revisiting it sounds counter-intuitive. However, it's worth considering a phenomenon called the "spacing effect" when planning your study schedule.
According to research published in 2007 by Doug Rohrer and Hal Pashler, you should aim to time the intervals between learning something and revising it based on when you'll really need to recall it (for an exam, say, or a holiday) following a 10 per cent rule – i.e. you should space your revision periods at intervals of roughly 10 per cent of the total time you'd really like to retain those memories. If you've got a test coming up in a month, say, then you should revise what you learn today in about two or three days' time. But if you want to remember something over the longer term, so that your performance peaks in a year's time, then it's sensible to revisit that information once a month. Why this rule should work isn't clear, but it's possible that having long gaps between learning, revision and retrieval tells your brain that this is knowledge you'll be coming back to, so it's worth holding for the long term.
The 10 per cent rule is only a rough guide, though. More recent research suggests the spacing effect works best when it is adapted to each individual's progress. In a study published in 2014 in Psychological Science, Pashler and his team devised individual spacing plans for middle school pupils learning Spanish, based on the material's difficulty level and how well the students did on early tests. They found that these individualised plans boosted test performance at the end of a semester by 16.5 per cent, and led to 10 per cent better scores than the "one-size-fits-all" 10 per cent spaced study plan.
Other research has backed up this counter-intuitive idea that, rather than being detrimental, taking a long break from a language that you're learning might actually be beneficial. A study published in 2012 involved 19 people becoming proficient at speaking and comprehending an artificial language and then taking a three- to six-month break. Michael Ullman at Georgetown University and his team found that the group did just as well in grammar tests after this break as they had done right after first learning the language. In fact, after the break, their brain activity while processing the language looked more like the kind of activity you see when native speakers are processing their first language. Ullman thinks taking a lengthy break from an already learned second language can help the representation of the language to shift from a form of "declarative memory" to "procedural" – akin to playing an instrument or riding a bike. This was a small study involving an artificial language so more research is definitely needed, but as the researchers noted, their findings have "potentially important consequences for second language acquisition".
Have a drink…
Alcohol is not exactly known for its brain-boosting properties. It impairs all types of cognitive functioning, including working memory and the ability to ignore distractions. So you'd think it would make it harder for someone to speak in a foreign language. However, a study published in 2017 by Fritz Renner and colleagues found that it doesn't – if anything, it can be beneficial.
German volunteers learning Dutch who'd drunk enough vodka to achieve a blood alcohol level of 0.04 per cent (approximately equivalent to just under a pint of beer for a 70kg male) were rated by independent Dutch speakers as speaking the language more proficiently during a short-test (they had to argue in Dutch for or against animal testing), compared with the other participants who'd only drunk water beforehand.
Why? Perhaps because some people feel anxious when talking in a foreign language, and this was ameliorated by the alcohol. However, as Renner cautions: "It is important to point out that participants in this study consumed a low dose of alcohol. Higher levels of alcohol consumption might not have [these] beneficial effects."
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Scientists are using bioelectronic medicine to treat inflammatory diseases, an approach that capitalizes on the ancient "hardwiring" of the nervous system.
- Bioelectronic medicine is an emerging field that focuses on manipulating the nervous system to treat diseases.
- Clinical studies show that using electronic devices to stimulate the vagus nerve is effective at treating inflammatory diseases like rheumatoid arthritis.
- Although it's not yet approved by the US Food and Drug Administration, vagus nerve stimulation may also prove effective at treating other diseases like cancer, diabetes and depression.
The nervous system’s ancient reflexes<p>You accidentally place your hand on a hot stove. Almost instantaneously, your hand withdraws.</p><p>What triggered your hand to move? The answer is <em>not</em> that you consciously decided the stove was hot and you should move your hand. Rather, it was a reflex: Skin receptors on your hand sent nerve impulses to the spinal cord, which ultimately sent back motor neurons that caused your hand to move away. This all occurred before your "conscious brain" realized what happened.</p><p>Similarly, the nervous system has reflexes that protect individual cells in the body.</p><p>"The nervous system evolved because we need to respond to stimuli in the environment," said Dr. Tracey. "Neural signals don't come from the brain down first. Instead, when something happens in the environment, our peripheral nervous system senses it and sends a signal to the central nervous system, which comprises the brain and spinal cord. And then the nervous system responds to correct the problem."</p><p>So, what if scientists could "hack" into the nervous system, manipulating the electrical activity in the nervous system to control molecular processes and produce desirable outcomes? That's the chief goal of bioelectronic medicine.</p><p>"There are billions of neurons in the body that interact with almost every cell in the body, and at each of those nerve endings, molecular signals control molecular mechanisms that can be defined and mapped, and potentially put under control," Dr. Tracey said in a <a href="https://www.youtube.com/watch?v=AJH9KsMKi5M" target="_blank">TED Talk</a>.</p><p>"Many of these mechanisms are also involved in important diseases, like cancer, Alzheimer's, diabetes, hypertension and shock. It's very plausible that finding neural signals to control those mechanisms will hold promises for devices replacing some of today's medication for those diseases."</p><p>How can scientists hack the nervous system? For years, researchers in the field of bioelectronic medicine have zeroed in on the longest cranial nerve in the body: the vagus nerve.</p>
The vagus nerve<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNTYyOTM5OC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NTIwNzk0NX0.UCy-3UNpomb3DQZMhyOw_SQG4ThwACXW_rMnc9mLAe8/img.jpg?width=1245&coordinates=0%2C0%2C0%2C0&height=700" id="09add" class="rm-shortcode" data-rm-shortcode-id="f38dbfbbfe470ad85a3b023dd5083557" data-rm-shortcode-name="rebelmouse-image" data-width="1245" data-height="700" />
Electrical signals, seen here in a synapse, travel along the vagus nerve to trigger an inflammatory response.
Credit: Adobe Stock via solvod<p>The vagus nerve ("vagus" meaning "wandering" in Latin) comprises two nerve branches that stretch from the brainstem down to the chest and abdomen, where nerve fibers connect to organs. Electrical signals constantly travel up and down the vagus nerve, facilitating communication between the brain and other parts of the body.</p><p>One aspect of this back-and-forth communication is inflammation. When the immune system detects injury or attack, it automatically triggers an inflammatory response, which helps heal injuries and fend off invaders. But when not deployed properly, inflammation can become excessive, exacerbating the original problem and potentially contributing to diseases.</p><p>In 2002, Dr. Tracey and his colleagues discovered that the nervous system plays a key role in monitoring and modifying inflammation. This occurs through a process called the <a href="https://www.nature.com/articles/nature01321" target="_blank" rel="noopener noreferrer">inflammatory reflex</a>. In simple terms, it works like this: When the nervous system detects inflammatory stimuli, it reflexively (and subconsciously) deploys electrical signals through the vagus nerve that trigger anti-inflammatory molecular processes.</p><p>In rodent experiments, Dr. Tracey and his colleagues observed that electrical signals traveling through the vagus nerve control TNF, a protein that, in excess, causes inflammation. These electrical signals travel through the vagus nerve to the spleen. There, electrical signals are converted to chemical signals, triggering a molecular process that ultimately makes TNF, which exacerbates conditions like rheumatoid arthritis.</p><p>The incredible chain reaction of the inflammatory reflex was observed by Dr. Tracey and his colleagues in greater detail through rodent experiments. When inflammatory stimuli are detected, the nervous system sends electrical signals that travel through the vagus nerve to the spleen. There, the electrical signals are converted to chemical signals, which trigger the spleen to create a white blood cell called a T cell, which then creates a neurotransmitter called acetylcholine. The acetylcholine interacts with macrophages, which are a specific type of white blood cell that creates TNF, a protein that, in excess, causes inflammation. At that point, the acetylcholine triggers the macrophages to stop overproducing TNF – or inflammation.</p><p>Experiments showed that when a specific part of the body is inflamed, specific fibers within the vagus nerve start firing. Dr. Tracey and his colleagues were able to map these relationships. More importantly, they were able to stimulate specific parts of the vagus nerve to "shut off" inflammation.</p><p>What's more, clinical trials show that vagus nerve stimulation not only "shuts off" inflammation, but also triggers the production of cells that promote healing.</p><p>"In animal experiments, we understand how this works," Dr. Tracey said. "And now we have clinical trials showing that the human response is what's predicted by the lab experiments. Many scientific thresholds have been crossed in the clinic and the lab. We're literally at the point of regulatory steps and stages, and then marketing and distribution before this idea takes off."<br></p>
The future of bioelectronic medicine<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNTYxMDYxMy9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYzNjQwOTExNH0.uBY1TnEs_kv9Dal7zmA_i9L7T0wnIuf9gGtdRXcNNxo/img.jpg?width=980" id="8b5b2" class="rm-shortcode" data-rm-shortcode-id="c005e615e5f23c2817483862354d2cc4" data-rm-shortcode-name="rebelmouse-image" data-width="2000" data-height="1125" />
Vagus nerve stimulation can already treat Crohn's disease and other inflammatory diseases. In the future, it may also be used to treat cancer, diabetes, and depression.
Credit: Adobe Stock via Maridav<p>Vagus nerve stimulation is currently awaiting approval by the US Food and Drug Administration, but so far, it's proven safe and effective in clinical trials on humans. Dr. Tracey said vagus nerve stimulation could become a common treatment for a wide range of diseases, including cancer, Alzheimer's, diabetes, hypertension, shock, depression and diabetes.</p><p>"To the extent that inflammation is the problem in the disease, then stopping inflammation or suppressing the inflammation with vagus nerve stimulation or bioelectronic approaches will be beneficial and therapeutic," he said.</p><p>Receiving vagus nerve stimulation would require having an electronic device, about the size of lima bean, surgically implanted in your neck during a 30-minute procedure. A couple of weeks later, you'd visit, say, your rheumatologist, who would activate the device and determine the right dosage. The stimulation would take a few minutes each day, and it'd likely be unnoticeable.</p><p>But the most revolutionary aspect of bioelectronic medicine, according to Dr. Tracey, is that approaches like vagus nerve stimulation wouldn't come with harmful and potentially deadly side effects, as many pharmaceutical drugs currently do.</p><p>"A device on a nerve is not going to have systemic side effects on the body like taking a steroid does," Dr. Tracey said. "It's a powerful concept that, frankly, scientists are quite accepting of—it's actually quite amazing. But the idea of adopting this into practice is going to take another 10 or 20 years, because it's hard for physicians, who've spent their lives writing prescriptions for pills or injections, that a computer chip can replace the drug."</p><p>But patients could also play a role in advancing bioelectronic medicine.</p><p>"There's a huge demand in this patient cohort for something better than they're taking now," Dr. Tracey said. "Patients don't want to take a drug with a black-box warning, costs $100,000 a year and works half the time."</p><p>Michael Dowling, president and CEO of Northwell Health, elaborated:</p><p>"Why would patients pursue a drug regimen when they could opt for a few electronic pulses? Is it possible that treatments like this, pulses through electronic devices, could replace some drugs in the coming years as preferred treatments? Tracey believes it is, and that is perhaps why the pharmaceutical industry closely follows his work."</p><p>Over the long term, bioelectronic approaches are unlikely to completely replace pharmaceutical drugs, but they could replace many, or at least be used as supplemental treatments.</p><p>Dr. Tracey is optimistic about the future of the field.</p><p>"It's going to spawn a huge new industry that will rival the pharmaceutical industry in the next 50 years," he said. "This is no longer just a startup industry. [...] It's going to be very interesting to see the explosive growth that's going to occur."</p>
Japan looks to replace China as the primary source of critical metals
- Enough rare earth minerals have been found off Japan to last centuries
- Rare earths are important materials for green technology, as well as medicine and manufacturing
- Where would we be without all of our rare-earth magnets?
What are the rare earth elements?<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8xOTA2MTM0Ni9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYzODExMjMyMn0.owchAgxSBwji5IofgwKtueKSbHNyjPfT7hTJrHpTi98/img.jpg?width=980" id="fd315" class="rm-shortcode" data-rm-shortcode-id="d8ed70e3d0b67b9cbe78414ffd02c43e" data-rm-shortcode-name="rebelmouse-image" />
(julie deshaies/Shutterstock)<p>The rare earth metals can be mostly found in the second row from the bottom in the Table of Elements. According to the <a href="http://www.rareearthtechalliance.com/What-are-Rare-Earths" target="_blank"><u>Rare Earth Technology Alliance</u></a>, due to the "unique magnetic, luminescent, and electrochemical properties, these elements help make many technologies perform with reduced weight, reduced emissions, and energy consumption; or give them greater efficiency, performance, miniaturization, speed, durability, and thermal stability."</p><p>In order of atomic number, the rare earths are:</p> <ul> <li>Scandium or Sc (21) — This is used in TVs and energy-saving lamps.</li> <li>Yttrium or Y (39) — Yttrium is important in the medical world, used in cancer drugs, rheumatoid arthritis medications, and surgical supplies. It's also used in superconductors and lasers.</li> <li>Lanthanum or La (57) — Lanthanum finds use in camera/telescope lenses, special optical glasses, and infrared absorbing glass.</li> <li>Cerium or Ce (58) — Cerium is found in catalytic converters, and is used for precision glass-polishing. It's also found in alloys, magnets, electrodes, and carbon-arc lighting. </li> <li>Praseodymium or Pr (59) — This is used in magnets and high-strength metals.</li> <li>Neodymium or Nd (60) — Many of the magnets around you have neodymium in them: speakers and headphones, microphones, computer storage, and magnets in your car. It's also found in high-powered industrial and military lasers. The mineral is especially important for green tech. Each <a href="https://www.reuters.com/article/us-mining-toyota/as-hybrid-cars-gobble-rare-metals-shortage-looms-idUSTRE57U02B20090831" target="_blank"><u>Prius</u></a> motor, for example, requires 2.2 lbs of neodymium, and its battery another 22-33 lbs. <a href="https://pubs.usgs.gov/sir/2011/5036/sir2011-5036.pdf" target="_blank"><u>Wind turbine batteries</u></a> require 450 lbs of neodymium per watt. </li> <li>Promethium or Pm (61) — This is used in pacemakers, watches, and research.</li> <li>Samarium or Sm (62) — This mineral is used in magnets in addition to intravenous cancer radiation treatments and nuclear reactor control rods.</li> <li>Europium or Eu (63) — Europium is used in color displays and compact fluorescent light bulbs.</li> <li>Gadolinium or Gd (64) — It's important for nuclear reactor shielding, cancer radiation treatments, as well as x-ray and bone-density diagnostic equipment.</li> <li>Terbium or Tb (65) — Terbium has similar uses to Europium, though it's also soft and thus possesses unique shaping capabilities .</li> <li>Dysprosium or Dy (66) — This is added to other rare-earth magnets to help them work at high temperatures. It's used for computer storage, in nuclear reactors, and in energy-efficient vehicles.</li> <li>Holmium or Ho (67) — Holmium is used in nuclear control rods, microwaves, and magnetic flux concentrators.</li> <li>Erbium or Er (68) — This is used in fiber-optic communication networks and lasers.</li> <li>Thulium or Tm (69) — Thulium is another laser rare earth.</li> <li>Ytterbium or Yb (70) — This mineral is used in cancer treatments, in stainless steel, and in seismic detection devices.</li> <li>Lutetium or Lu (71) — Lutetium can target certain cancers, and is used in petroleum refining and positron emission tomography.</li></ul>
Where Japan found is rare earths<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8xOTA2MTM0OC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY1MTA0NzUxNn0.N3t_iKf6lnnoJ6yVUtl8-wNZICEG2ZxyPzm9ZdE99ks/img.jpg?width=980" id="021b7" class="rm-shortcode" data-rm-shortcode-id="d9dd843fde547a0b69f8798aca18a706" data-rm-shortcode-name="rebelmouse-image" />
Minimatori Torishima Island
(Chief Master Sergeant Don Sutherland, U.S. Air Force)<p>Japan located the rare earths about 1,850 kilometers off the shore of <a href="https://en.wikipedia.org/wiki/Minami-Tori-shima" target="_blank"><u>Minamitori Island</u></a>. Engineers located the minerals in 10-meter-deep cores taken from sea floor sediment. Mapping the cores revealed and area of approximately 2,500 square kilometers containing rare earths.</p><p>Japan's engineers estimate there's 16 million tons of rare earths down there. That's <a href="https://minerals.usgs.gov/minerals/pubs/historical-statistics/ds140-raree.xlsx" target="_blank"><u>five times</u></a> the amount of the rare earth elements ever mined since 1900. According to <a href="https://www.businessinsider.com.au/rare-earth-minerals-found-in-japan-2018-4?r=US&IR=T" target="_blank"><u>Business Insider</u></a>, there's "enough yttrium to meet the global demand for 780 years, dysprosium for 730 years, europium for 620 years, and terbium for 420 years."</p><p>The bad news, of course, is that Japan has to figure out how to extract the minerals from 6-12 feet under the seabed four miles beneath the ocean surface — that's the <a href="https://www.nature.com/articles/s41598-018-23948-5" target="_blank"><u>next step</u></a> for the country's engineers. The good news is that the location sits squarely within Japan's Exclusive Economic Zone, so their rights to the lucrative discovery will be undisputed.</p>
A physicist creates an AI algorithm that predicts natural events and may prove the simulation hypothesis.
- Princeton physicist Hong Qin creates an AI algorithm that can predict planetary orbits.
- The scientist partially based his work on the hypothesis which believes reality is a simulation.
- The algorithm is being adapted to predict behavior of plasma and can be used on other natural phenomena.
Physicist Hong Qin with images of planetary orbits and computer code.
Credit: Elle Starkman
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