シャドーイング練習: Is being bilingual good for you brain? | BBC Ideas - YouTubeで英語スピーキングを学ぶ
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It used to be thought that being bilingual was a bad thing, that it would confuse or hold people back, especially children.
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It used to be thought that being bilingual was a bad thing, that it would confuse or hold people back, especially children.
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Turns out we couldn't have been more wrong.
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Learning new languages is an exercise of the mind.
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It's the mental equivalent of going to a gym every day.
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In the bilingual brain, all our languages are active, all at the same time.
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The continual effort of suppressing a language when speaking another, along with the mental challenge that comes with regularly switching between languages, exercises our brain.
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It improves our concentration, problem solving, memory, and in turn, our creativity.
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It's now widely accepted that there are huge benefits to being bilingual.
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A key breakthrough came back in 2007 in Toronto, when Ellen Bialystok and her team made a discovery that shook the scientific community and has massive real-world implications.
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It was the first study which suggested that bilingual people, people who speak more than one language, develop dementia four to four and a half years later than those who don't.
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It was a powerful confirmation of the idea of cognitive reserve.
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Now, what is cognitive reserve?
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Cognitive reserve is the idea that people develop a reserve of thinking abilities, and this protects them against losses that can occur through aging and disease.
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As well as delaying the onset of dementia, bilingual people have been shown to recover significantly better after a stroke.
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Learning anything new helps build cognitive reserve, but there's something special about language.
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Language is particularly broad and complex.
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It affects ideas and concepts, perception, different sounds.
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The more complex a certain skill is, the more likely it is to have a positive effect on cognitive reserve.
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So when is the best time to learn a new language?
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Well, here's part of the answer.
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The brain is a complex set of neural networks.
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When you're learning a new language as a child, you're building new networks.
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But when you learn a language later in life, You have to modify the existing networks and make more connections.
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Because learning languages later in life can be more challenging, the benefits can also be greater.
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But a 2023 study at Great Ormond Street suggests this is just part of the story.
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So we invited three groups of children that were aged 8 to 10.
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And we had a group of children who were monolinguals, a group of children who had early exposure to Greek and English from birth.
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They were our early bilinguals.
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And finally, we had a group who had been exposed to English between the ages of two and five, and they were our later bilinguals.
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So what we did that no one had done before is that we asked the children to line the scanner while doing nothing and just staring at a cross.
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And during this we measured their brain activity.
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So what we found that was really exciting for us is that our early bilingual group had the strongest connectivity in the network at rest.
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And this group of regions are regions that light up when we're doing nothing and just mind-wandering.
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A little bit like if you're going to the gym every day, So muscles might look bigger at rest, while similarly your brain might be better connected at rest because you are learning a language early.
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And this is something no one had found before.
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And there's more.
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One lesser known behavioural effect of bilingualism in both children and adults is the ability to see the other people's perspective or to understand that it is possible to have different points of view.
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Recent studies have also found that people tend to react more emotionally in their first language and more rationally in a more abstract way in the second.
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And the way it is usually explained is that the first language is the one which we use to speak with family, with friends, in informal settings.
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The second language is usually learned at school, at the university, at work.
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Scientists are discovering new upsides to being bilingual all the time.
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And it's not just our brains that benefit.
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Learning new languages and speaking more than one language is very important, not only for individuals, but also for societies.
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Learning new languages can open doors to new cultural experiences, life opportunities.
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different people, different communities and different ways of seeing the world.
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And with that, we'll say a final.
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Ma assalamu.
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Say siin.
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Au revoir.
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Arrivederci.
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Goodbye.
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Dovizegna.
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Auf Wiedersehen.
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Adios.
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Adios.
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Bye.
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Thank you.
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文脈と背景
最近の研究によると、バイリンガルであることはあなたの脳にとって非常に良い影響を与えることが示されています。これまでバイリンガルは混乱を招くと考えられていましたが、実際には脳の運動のようなものであり、私たちの注意力、問題解決能力、記憶、創造性さえも向上させることがわかっています。特に言語を学ぶことで認知リザーブが形成され、認知症や脳卒中からの回復を助けることができます。このビデオでは、バイリンガル学習がもたらす利益についての最新の研究について詳しく説明しています。
日常会話のためのトップ5フレーズ
- 「バイリンガルは頭に良い影響を与える」 - Bilingualism positively affects the brain.
- 「認知リザーブ」 - Cognitive reserve protects against cognitive decline.
- 「新しい言語を学ぶことは脳のエクササイズ」 - Learning a new language is like exercising your brain.
- 「異なる視点を理解する能力が向上する」 - It enhances the ability to understand different perspectives.
- 「言語学習は新しい文化的体験を開く」 - Language learning opens doors to new cultural experiences.
ステップバイステップのシャドーイングガイド
このビデオの内容を使用してシャドースピーチ（shadow speech）を練習する際は、以下の手順を参考にしてください。
- ビデオを一度視聴する: 内容を理解し、全体の流れを掴みます。
- セクションごとに繰り返す: 各セクションを少しずつ再生し、その後すぐに繰り返します。この方法は「シャドースピーク（shadowspeak）」として知られています。
- フレーズを声に出して練習: 上記のトップ5フレーズを特に重視し、発音とイントネーションに注意を払いましょう。
- 録音して確認: 自分の声を録音し、ネイティブの発話と比較してみてください。改善点を見つけやすくなります。
- 定期的に復習: 学習した内容を定期的に復習し、記憶を強化します。このプロセスがIELTSスピーキング対策にも役立つでしょう。
これらのステップを繰り返すことで、あなたの英語スピーキング能力は確実に向上するはずです。言語学習において、バイリンガルであることの利益を最大限に引き出し、認知リザーブを高めましょう。
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。