言葉の遅れを示す危険信号:言語療法を誰に紹介すべきか?
Daisy Shepherd1,2, Olivia van Reyk3, Adam P Vogel4,5
1Neurodevelopment, Murdoch Childrens Research Institute, Parkville, Victoria, Australia.
Archives of disease in childhood
|February 25, 2026
まとめ
この研究により、幼児期には音の誤りが一般的であり、その獲得は20年以上にわたって遅くなっていることが明らかになりました。新しいデータは、持続的な言語障害を特定し、タイムリーな言語療法への紹介を支援します。
科学分野:
- 小児聴覚および言語聴覚療法。発達心理学および子供の言語獲得。
背景:
- 音声障害は小児科医にとって頻繁な懸念事項ですが、持続的な音声障害を特定しセラピーを紹介するための現在の証拠は限られています。発達上の音声誤りと障害を示す誤りを正確に区別することを妨げる、最近の英語の音声基準値データの不足があります。
研究 の 目的:
- 子供の音声獲得に関する現代的な基準値データを作成すること。臨床医が典型的な発達上の音声誤りと障害のある音声パターンを区別するのを支援すること。過去20年間の音声発達の変化を調査すること。
主な方法:
- ニューサウスウェールズ州とビクトリア州の24の施設から2歳0ヶ月から12歳11ヶ月の子供1179人を募集しました。単語全体の正確さを含む、音声獲得と正確さの記録を行いました。音の誤りのパターンを、発達上のものか障害のあるものかに分類しました。
主要な成果:
- 音声パフォーマンスは6歳まで有意なばらつきを示しましたが、7歳までに子供の90%がすべての音を正しく発音しました。一般的な誤りには、音の転置、母音の誤り、後舌化が含まれていました。過去の基準値によると、音の獲得と誤りの解決の速度は遅いことが示されています。単語の正確さと誤りのパターンには、8歳から12歳の間でほとんど差が見られませんでした。
結論:
- 幼児期の音声誤りの高い有病率とばらつきは、頻繁な親の懸念とセラピーの求めを説明しています。現代のデータは、20年前と比較して音声の習得に遅れがある可能性を示唆しています。持続的な音声障害のリスクがある子供の紹介をガイドするために、年齢基準のカットポイントと「危険信号」の誤りを含む評価ツールが提供されています。
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