定量的違いはあるが質的な違いはない:中国語を話す自閉症児の文法マーカー発達の縦断的分析
Ziyan Meng1, Li Wang2,3, Hoyee W Hirai3
1Department of Linguistics and Modern Languages, The Chinese University of Hong Kong, Hong Kong SAR, China.
まとめ
自閉症の子供たちは、典型的発達の子供たちよりも遅いペースではあるが、典型的な順序で中国語の文法マーカーを学習する。この質的な違いではなく量的な違いは、逸脱ではなく発達の遅れを示唆している。
科学分野:
- 言語学
- 発達心理学
- 神経発達障害
背景:
- 自閉症スペクトラム障害(ASD)は言語発達に著しい影響を与えるが、量的違いと質的違いの区別は不明確なままである。
- ASDにおける形態統語論は、中国語のような非西洋言語では十分に研究されていない。
研究 の 目的:
- 自閉症の子供たちの中国語文法マーカーの獲得パターンを縦断的に調査すること。
- 自閉症の子供たちの発達軌跡を、典型的発達の子供たちと比較すること。
- 文法マーカーの獲得に対する自閉症の重症度と初期の言語能力の影響を調べること。
主な方法:
- 3つの時点にわたって88人の自閉症児(26〜76ヶ月)を追跡した縦断研究で、親の報告を使用した。
- 1つの時点での評価で84人の典型的発達児(16〜30ヶ月)と比較した。
- さまざまな中国語文法マーカーの獲得順序と獲得ペースを分析した。
主要な成果:
- 自閉症の子供たちは、典型的発達の子供たちの発達を反映して、典型的な順序で中国語の文法マーカーを獲得した。
- 自閉症の子供たちの獲得ペースは、典型的発達の子供たちと比較して著しく遅かった。
- この発達パターンは、自閉症の重症度や初期の言語能力に関係なく一貫していた。
結論:
- 自閉症の子供たちは、中国語の形態統語論の発達において、質的な違いではなく量的な遅れを示している。
- この結果は、ASDにおける言語獲得の発達遅延モデルを示唆している。
- この研究は、自閉症集団における言語発達を理解する上で、縦断的研究の重要性を強調している。
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