シャドーイング練習: Your brain doesn’t detect reality. It creates it. | Lisa Feldman Barrett - 動画で英語スピーキングを学ぶ

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63 文
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Sometimes people want to say, no, we definitely don't experience reality the way that it actually is.
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And some people want to say, yes, we do.
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Philosophers have been arguing about this for like as long as philosophy has existed.
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The question of does your experience match reality or are you really experiencing reality in its stark objective truth?
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And the answer is simply, not exactly.
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Reality for us is what we can sense with our sensory surfaces
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and what we can make sense of with the signals in our brain.
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The signals in our brain are as necessary for our experience of reality as the sensory signals that come from the world.
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So I'm going to use a metaphor to describe how the brain works.
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It goes something like this.
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Your brain, my brain, everybody's brain, is trapped in its own dark, silent box called your skull.
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and the brain has no knowledge of what is going on around it in the world or in the body, right?
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Because it's in this skull and it's receiving sensory signals from the sensory surfaces of your body.
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These signals are the outcomes of some changes in the world or in the body.
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But the brain doesn't know what the changes are.
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It's receiving the outcomes.
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And that is what philosophers and scientists call the reverse inference problem.
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You start with an outcome and you have to guess at the cause.
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For example, if you hear a loud bang, It could be a car backfiring, a door slamming.
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It could be a gunshot.
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Your brain doesn't know what the causes are.
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It only knows the effect.
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And so it has to guess.
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And the guess is important, right, because you would do different things if it's a gunshot versus if it's a windy day that slammed a door.
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And luckily, it has one other source of information, and that is your past experience.
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The really cool thing about this, if that wasn't cool enough, is that it's actually doing it predictively.
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Sometimes scientists talk about this as the brain running a model of the world.
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But the brain is not running a model of the world.
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The brain is running a model of its body.
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And it's doing it in this really interesting way.
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In psychology, a group of instances which are similar is called a category.
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In essence, what your brain is doing, when it's making a prediction, it's creating a category of instances from the past
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which are similar in some way to the present in order to predict what's going to happen next, what the brain has to do next and what your experience will be next.
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And so when a human brain is creating a category,
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you have to ask, what features of similarity is it using?
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Is it these sensory and motor features?
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An apple is round, an apple is hard and crunchy, or is it these abstract features,
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abstract multimodal summaries of patterns of features.
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I could take a bunch of apples and I could say, well, these are good for baking and these are not good for baking.
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And these patterns, this summary, only exists in your brain.
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Because our brains are structured to construct categories
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based on the function of things rather than what they look like or taste like or smell like,
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humans can create something called social reality
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which is where we collectively impose a function on objects that the objects don't have by virtue of their physical nature.
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So a really good example of this is money, little pieces of paper.
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We all agree that these little pieces of paper have a function of value.
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And it turns out that many things that we think of as being part of reality are actually like this.
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We can draw lines in the sand and create the borders of countries, which creates categories of people called immigrants and citizens.
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We can create governments, because we all agree that certain actions, like making little tick marks,
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has a meaning to elect someone into a position that has certain powers.
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It's a form of social reality.
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In our lab, we work on the hypothesis that many psychological categories are forms of social reality.
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We impose a meaning on a scowling face that it did not evolve to have.
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But because we all agree that it has that meaning or that function in a particular culture, then it does.
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To say that your brain resides in a dark, silent box doesn't mean that you are trapped in that box.
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Your brain has this wonderful capacity to take bits
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and pieces of past experience and create something completely new that you've never experienced before.
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We call it imagination.
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That's a double-edged sword, right?
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Because our brains are so good at imagining and creating predictions that are not yoked to our immediate surroundings,
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sometimes we have a lot of trouble staying in the present.
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You have to practice your ability to control how much you want to be constrained
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by what's going on outside that box and how much you want to be free of it.

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このレッスンの語彙とスピーキングのポイント

このC1レベルのスピーキングレッスンは、動画「Your brain doesn’t detect reality. It creates it」を教材にしています。 繰り返し出てくる語は次のとおりです：brain, reality, experience, sensory, signals。 この動画には、シャドーイング用の文が63文、単語が859語あります。 音声の長さは6:17です。 話す速さは1分あたり約137語で安定しており、シャドーイングしやすいペースです。 単語の85%は英語の頻出3,000語に含まれます。残りは練習の前に確認しておきましょう。

この動画の重要語彙

動画の中で特に難しい単語15語を、発音と意味つきで紹介します。

単語発音意味
gunshot 名詞/ˈɡʌn.ʃɑt/射撃
philosopher 名詞/fəˈlɑsəfɚ/哲学者
bake 動詞/beɪk/焼く
prediction 名詞/pɹɪˈdɪkʃən/予言, 予測
slam 動詞/ˈslæm/ばたんと閉める
windy 形容詞/ˈwɪn.di/風の吹く, 風の強い
similarity 名詞/ˌsɪm.ɪˈlæɹ.ɪ.ti/類似, 類似性
reside 動詞/ɹɪˈzaɪd/住む, 居住する
metaphor 名詞/ˈmɛt.ə.fɚ/比喩, 隠喩
surroundings 名詞/səˈɹaʊndɪŋz/周囲
tick 名詞/tɪk/だに, ごさらぎ
hypothesis 名詞/haɪˈpɒθɪsɪs/仮説
luckily 副詞/ˈlʌk.ɪ.li/幸いにも, 運良く
virtue 名詞/ˈvɝt͡ʃu/力天使
construct 動詞/ˈkɑn.stɹʌkt/建設する, 建てる

この動画の文法

話し手がよく使っている文型を、動画の実際の表現とともに紹介します。

文型動画での表現
受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てるis trapped · is called · are structured
現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係しているhas existed · you've never experienced

注意したい発音

話し手はdoesn't, don't, I'mなど、短縮形や弱形を8回使っています。聞こえたとおりの短い形で発音しましょう。

  • 「sh」と「zh」の音: gunshot /ˈɡʌn.ʃɑt/, prediction /pɹɪˈdɪkʃən/
  • 長い単語（アクセントの位置に注意）: philosopher /fəˈlɑsəfɚ/, similarity /ˌsɪm.ɪˈlæɹ.ɪ.ti/, hypothesis /haɪˈpɒθɪsɪs/

日本語話者が苦手な音：

  • /v/ — /b/ にならないように、上の歯を下唇に当てる: evolve /ɪˈvɑlv/, virtue /ˈvɝt͡ʃu/
  • /f/ — 「フ」ではなく、上の歯と下唇で出す: philosopher /fəˈlɑsəfɚ/, backfire /bækˈfaɪə(ɹ)/, inference /ˈɪn.fə.ɹəns/, metaphor /ˈmɛt.ə.fɚ/
  • 子音の連続 — 間に母音を入れない: prediction /pɹɪˈdɪkʃən/, slam /ˈslæm/, constrain /kənˈstɹeɪn/, crunchy /ˈkɹʌnt͡ʃi/, inference /ˈɪn.fə.ɹəns/

この動画での練習方法

  1. まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
  2. 通常の速度で一文ずつシャドーイングし、話し手のリズムに合うまで繰り返します。
  3. 自分の声を録音して元の音声と比べます。gunshot, philosopher, bakeなどの単語に特に注意しましょう。

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。

シャドーイングのやり方: ステップ別の完全ガイドを読む →