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原田英語の時事英語ジュニア｜英語ニュース ワークシート（高校生レベル）

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会話が続かない？楽しい会話は話が「ずれては戻る」かも　1600以上の通話を分析

Study Links Enjoyable Talks to a Pattern Known as Pink Noise

音声・ゲームはこちらから

1Conversations that people enjoy may share a hidden rhythm, in which partners drift apart in what they say and then come back together, a study from Dartmouth College in the United States suggests. The study was published on Nov. 6 in the journal Science Advances.

2The researchers noted that a talk in which two people agree on everything can become boring. So instead of looking only at how similar the partners' words were, Kathryn O'Nell, Kiara Sanchez and Emily Finn looked at how that closeness changes over the course of a talk.

3Their main data came from 1,656 video calls between strangers, who were told to keep the talk going for 25 minutes or more and then rated the experience. A language model turned each speaking turn into 768 numbers. This allowed the team to measure how similar in meaning each turn was to the previous one.

4The team was looking for pink noise, a pattern that falls between complete randomness and rigid sameness. In a conversation, it means that partners stay closely aligned for a stretch, move apart when one of them raises a new idea, and later come back together. Calls with stronger pink noise were rated as more enjoyable, and the partners also felt more connected, although both links were small.

5The team also studied 25 amateur podcasts with two hosts. The pattern grew stronger over their first 50 episodes. An AI model was asked to write 100 chats, with half meant to be enjoyable and half not. The enjoyable scripts showed more pink noise.

6The study mostly analyzed recordings of past conversations, so it shows a link but not a cause. The researchers said experiments that change the rhythm of conversations would be needed to test whether the rhythm itself makes talks more enjoyable.

Words　単語

partnersA1名（いっしょに何かをする）相手（partner の複数形）people who do something together
drift外動（少しずつ）はなれていく、ただようto move slowly away without a plan
boringA1形たいくつな、つまらないnot interesting at all
previousB1形前の、1つ前のcoming just before this one
randomness外名でたらめさ、ランダムさthe quality of having no plan or order
rigid外形かたい、変わらない、融通のきかないnot able to change or bend
aligned外形そろった、（考えなどが）合ったin the same line or matching closely
connectedB1形つながっている（と感じる）feeling close to someone
amateur外形アマチュアの、しろうとのdoing something for fun, not as a job
analyzedB1動分析した（analyze の過去形）studied something closely to understand it

単語のレベル：CEFR-J（『CEFR-J Wordlist Version 1.6』 東京外国語大学投野由紀夫研究室. （URL: https://www.cefr-j.org/download.html より 2026年8月ダウンロード））

1. Reading Quiz　本文の内容に合うものを選ぼう

  1. What did the researchers say about a talk in which two people agree on everything?

    A. It is always the best kind of talk.B. It can become boring.C. It never happens.D. It makes people feel more connected.

  2. What did the language model do?

    A. It wrote questions for the strangers.B. It chose who would talk to whom.C. It turned each speaking turn into 768 numbers.D. It recorded the video calls.

  3. Which describes pink noise in a conversation?

    A. Partners stay aligned, move apart with a new idea, and later come back together.B. Partners repeat the same idea for the whole talk.C. Partners change the topic at every turn without any order.D. Partners stop talking for long periods.

  4. What happened to the pattern in 25 amateur podcasts?

    A. It disappeared after the first episode.B. It stayed the same.C. It became weaker over time.D. It grew stronger over the first 50 episodes.

  5. Why can't the study show that pink noise causes enjoyment?

    A. Because only 25 people took partB. Because it mostly analyzed recordings of past conversationsC. Because the calls were too shortD. Because the AI model wrote all the conversations

2. True or False　正しければ T、違っていれば F

  1. (     ) The strangers were told to keep talking for 25 minutes or more.

  2. (     ) The links between pink noise and enjoyment or connection were large.

  3. (     ) The AI model's enjoyable scripts showed more pink noise than the other scripts.

  4. (     ) In the 25 podcasts, the pattern grew weaker over the first 50 episodes.

3. Fill in the Blanks　下の語から選んで空らんをうめよう（形を変えずに）

partnersrandomnesspreviousalignedboringconnected

  1. The researchers noted that a talk in which two people agree on everything can become _____.

  2. In a conversation, it means that partners stay closely _____ for a stretch, move apart when one of them raises a new idea, and later come back together.

  3. This allowed the team to measure how similar in meaning each turn was to the _____ one.

  4. Calls with stronger pink noise were rated as more enjoyable, and the partners also felt more _____, although both links were small.

  5. Conversations that people enjoy may share a hidden rhythm, in which _____ drift apart in what they say and then come back together, a study from Dartmouth College in the United States suggests.

  6. The team was looking for pink noise, a pattern that falls between complete _____ and rigid sameness.

4. Word Order　語を並べかえて正しい文にしよう

  1. ( the / 6 / The / published / Advances / was / journal / in / on / study / Nov. / Science ) .

  2. ( speaking / 768 / into / A / model / turn / numbers / language / turned / each ) .

  3. ( pattern / over / episodes / their / grew / first / stronger / The / 50 ) .

5. Think and Write　英語で答えてみよう

  1. Do you think a good conversation needs some disagreement? Why or why not?（よい会話には、少し意見がちがうことも必要だと思いますか？その理由は？）

  2. Do you think conversation skills can improve with practice? Give an example.（会話の力は練習で上達すると思いますか？例をあげて答えましょう。）

Answers　解答

1. (1) B　(2) C　(3) A　(4) D　(5) B

2. (1) T　(2) F　(3) T　(4) F

3. (1) boring　(2) aligned　(3) previous　(4) connected　(5) partners　(6) randomness

4.

  1. The study was published on Nov. 6 in the journal Science Advances.
  2. A language model turned each speaking turn into 768 numbers.
  3. The pattern grew stronger over their first 50 episodes.

全文訳

1人が楽しいと感じる会話には、話す2人の言うことが少しずつはなれては、また重なるという、かくれたリズムが共通しているのかもしれないことが、アメリカのダートマス大学の研究で示されました。この研究は、11月6日に学術誌「サイエンス・アドバンシズ」に発表されました。

2研究者たちは、2人の意見が何もかも同じ会話は、たいくつになりうると指摘しています。そこでキャスリン・オネルさん、キアラ・サンチェスさん、エミリー・フィンさんは、2人の言葉がどれだけ近いかだけでなく、その近さが会話の中でどう変わっていくかに目を向けました。

3おもなデータは、知らない人どうしの1,656回のビデオ通話です。2人は25分以上話しつづけるように言われ、そのあと、その会話について評価しました。言語モデル（文章を扱うAIの技術）が、1回1回の発言を、768個の数字に変えました。これによって研究チームは、それぞれの発言が1つ前の発言と、意味がどのくらい似ているかをはかることができました。

4チームがさがしていたのは「ピンクノイズ」です。まったくのでたらめと、かたく決まって変わらない状態の、ちょうど間にある形のことです。会話でいえば、2人がしばらくぴったり合っていて、1人が新しい考えを出すとはなれ、やがてまた重なる、ということです。ピンクノイズが強い通話ほど楽しいと評価され、2人のつながりも強く感じられていました。ただし、どちらの関係も小さなものでした。

5チームは、2人で話すアマチュアのポッドキャスト25組も調べました。すると、最初の50回のあいだに、この形が強くなっていきました。AIに100本の会話を書かせ、半分は楽しい会話、残りの半分は楽しくない会話にしました。すると、楽しい会話のほうにピンクノイズが多く見られました。

6この研究はおもに過去の会話の録音を分析したものなので、関係は示せても、原因までは示せません。研究者たちは、リズムが会話を楽しくするのかを確かめるには、会話のリズムを変えてみる実験が必要だと述べています。

文法ポイント：前置詞＋関係代名詞（in which）

関係代名詞 which の前に前置詞を置き、「その中で～する…」のように名詞を説明する。本文の a hidden rhythm, in which partners drift apart ... では、in which 以下が rhythm を説明している（partners drift apart in the rhythm の in the rhythm が in which になった形）。a talk in which two people agree on everything も同じ形。

出典：Science Advances（PubMed Central の全文）、AAAS（EurekAlert!）、PsyPost ほか（記事は原田英語の時事英語ジュニアのオリジナル）｜https://www.haradaeigo.com/jijieigo-junior/news/2026-11-12-conversation-rhythm-pink-noise/