生涯を通じて意味表現は言語の経時的変化を反映して更新される
1Department of Cognitive and Information Sciences, University of California, Merced, Merced, CA, USA.
Open mind : discoveries in cognitive science
|January 7, 2026
まとめ
個々人は年齢に関係なく、生涯を通じて単語の意味を継続的に更新している。意味空間は歴史的な意味ではなく、現在の言語使用を反映しており、語彙意味表現の急速な更新が示唆される。
科学分野:
- 認知心理学
- 計算言語学
- 心理言語学
背景:
- 人間の意味記憶は言語の文脈によって形成される。
- 言語使用と単語の意味は時間とともに進化する。
- 個々の意味空間は、歴史的な言語の痕跡を保持するか、動的に更新される可能性がある。
研究 の 目的:
- 個々の意味空間が言語の経時的変化または現在の使用と一致するかどうかを調査する。
- 年齢が歴史的な単語意味の保持に影響を与えるかどうかを判断する。
- 生涯にわたる意味空間の更新の速度と性質を調べる。
主な方法:
- 言語意味の変化をモデル化するために、経時的単語埋め込み(HistWords)を利用した。
- 異なる年齢層の意味空間を、歴史的および現代的なコーパスと比較した。
- 意味が変化した単語について、若い成人および高齢の成人からの単語関連性判断を収集した。
主要な成果:
- 若い成人および高齢の成人の意味空間は、どちらも最近の言語コーパスと強く相関していた。
- 高齢の成人が若い成人よりも歴史的な意味空間を保持していることを示唆する証拠はほとんどない。
- 個々の意味表現は急速に更新され、古い意味の多くは新しい意味に置き換えられる。
結論:
- 語彙意味表現は、年齢に関係なく、生涯を通じて継続的に更新される。
- 最近の言語経験が現在の単語の意味を主に形成する。
- 以前に学習された単語の意味は、現代の言語使用パターンによって大部分が置き換えられる。
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