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幼児の典型的な発達における年齢に伴う話し言葉のリズムの変化
Grace Gervino1, Janina Boecher2, Ho Ming Chow1
1Department of Communication Sciences and Disorders, University of Delaware, Newark, Delaware 19713, USA.
The Journal of the Acoustical Society of America
|January 13, 2026
まとめ
子供
科学分野:
- 言語聴覚療法
- 発達言語学
- 音響音声学
背景:
- 子供たちの話し言葉のリズムの発達を理解することは、典型的な言語獲得のマイルストーンを特定するために不可欠です。
- 以前の研究では、幼児期および学齢期の話し言葉のリズムの発達軌跡が完全に詳細に説明されていませんでした。
- 話し言葉のリズムにおける性別による違いを調査することは、話し言葉の発達における潜在的な違いについての洞察を提供する可能性があります。
主な方法:
- 物語タスク中に、3歳から9歳までの典型的な発達をしている子供(男性29人、女性29人)58人から話し言葉の産出の音声録音を収集しました。
- 話し言葉のエンベロープにおける周期性を中心に、話し言葉のリズムを定量化するためにエンベロープベースの音響測定を使用しました。
- 年齢と性別に関連するリズム測定値を分析するために一般線形モデルを適用しました。
結論:
- 話し言葉のリズムは、音節レベルの組織化への移行を特徴とする、幼児期および学齢期に大幅な洗練を遂げます。
- 話し言葉のリズムの発達は、性別間で同様であるように見え、共通の発達経路を示唆しています。
- これらの発見は、子供たちの典型的な話し言葉の発達と音響音声学の理解を深めるのに役立ちます。
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