【なぜ人の脳の大きさは変化するのか】最強の英語インプット講座 19/05/24

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①まずは記事を英語の順番で読んで理解してみよう
②理解度チェックのクイズにチャレンジ
③覚えたい英単語をリストで確認
④もう一回じっくり読んで、しっかり理解しよう
⑤音読しよう！棒読みではなくリズムを少し意識して！

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まずは読んでみよう

Human brain size has decreased by about 13% since Homo sapiens lived 100,000 years ago. Studies by Ian Tattersall and others suggest this might be because as humans developed language and complex thinking, big brains became less necessary. Jeff Morgan Stibel believes changes in climate, leading to warmer weather, might also explain smaller brains, as they help regulate body temperature better. As societies grew more complex, people didn't need to rely solely on their own knowledge, which may have also led to smaller brains. Despite this, our use of tools and technology means our overall intelligence hasn't dropped.

理解度チェッククイズ

What is one reason suggested for the decrease in human brain size over the past 100,000 years?
A) Increased need for physical strength
B) Development of language and complex thinking
C) Poor diet
D) Lack of educational systems

How does Jeff Morgan Stibel explain the reduction in brain size?
A) Genetic mutations
B) Advances in medical technology
C) Climate changes leading to warmer weather
D) Increased use of technology

According to the summary, what impact has the evolution of societies had on brain size?
A) Societies becoming more complex meant brains needed to be larger.
B) As societies became more complex, individual knowledge was less critical, possibly contributing to smaller brains.
C) Complex societies increased brain sizes due to more interactions.
D) There is no connection between society complexity and brain size.

ピックアップ英単語を覚えよう

1. decrease - 減少する

2. suggest - 提案する、示唆する

3. developed - 発展した、進化した

4. complex - 複雑な

5. necessary - 必要な

6. climate - 気候

7. regulate - 調整する

8. temperature - 温度、気温

9. rely - 頼る

10. knowledge - 知識

11. intelligence - 知能、知力