自閉症における社会機能差異の階層構造を解明 (PKU Research Reveals Hierarchical Structure of Social Functioning Differences in Autism)

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2026-05-20 北京大学(PKU)

北京大学の臧銀銀教授らの研究チームは、自閉スペクトラム症(ASC)における社会機能の違いが、個別に独立した特性ではなく、階層的な発達構造を持つことを明らかにした。研究は北京師範大学や国際共同研究者とともに実施され、これまでで最大規模となるメタ解析・系統的レビューとして『Nature Human Behaviour』誌に掲載された。解析では、社会機能に関わる22要素を「運動」「感情」「推論」「動機づけ」「複雑技能」の5領域に分類できることを示した。特に、動機づけ関連の差異は生後約6か月という早期から現れ、その後に運動・感情・推論領域の違いが続くことが判明した。また、自閉症では各領域間の相互依存性が強く、一つの機能変化が他の社会機能発達にも影響する可能性が示された。研究チームは、今後は実社会での相互作用や文化差、性差を重視した研究が必要だと指摘している。本成果は、より精密なスクリーニングや発達段階に応じた支援設計、神経多様性に配慮した社会環境整備への応用が期待される。

自閉症における社会機能差異の階層構造を解明 (PKU Research Reveals Hierarchical Structure of Social Functioning Differences in Autism)
Patterns of Social Functioning Differences in Autism.

<関連情報>

自閉症における社会的機能:系統的レビューとメタ分析 Social functioning in autism: a systematic review and meta-analysis

Siyi Li,Huanqing Wang,Guoqiu Chen,Xi Cheng,Yuxi Wang,Wanyan Hu,Antonia Hamilton,Leonhard Schilbach,Li Yi,Kaat Alaerts,Zhanjun Zhang,Xi-Nian Zuo,Yin Wang & Yinyin Zang
Nature Human Behaviour  Published:12 May 2026
DOI:https://doi.org/10.1038/s41562-026-02457-w

Abstract

Atypical social functioning is a core feature of autism, yet findings remain fragmented across components and development. We aimed to systematically integrate this literature and characterize the organization, development and moderators of social functioning in autism. We conducted a systematic review and meta-analysis of behavioural studies published between January 1990 and August 2025, identified through PubMed, Web of Science and prior reviews, including studies with clinically diagnosed autistic individuals and neurotypical controls. A qualitative synthesis and two complementary quantitative meta-analyses were performed, with risk of bias evaluated through study-level characteristics. A total of 2,622 studies (94,114 autistic and 172,847 neurotypical individuals across 32 countries) were included, covering 22 social components that clustered into five domains. Overall group differences were substantial (Hedges’ g = −0.744; 95% confidence interval, (−0.797, −0.690)). Differences emerged the earliest in motivation-based processes (around six months), followed by motor, emotion and inference domains, and showed age-related divergence alongside improvement in some skills. Cross-domain analyses revealed stronger interdependencies in autism and an organizational pattern most consistent with serial relationships among domains. These findings should be interpreted in the light of methodological heterogeneity, underpowered samples and uneven cultural representation. Together, the results provide an integrative framework for understanding the organization and development of social functioning in autism, with implications for precision subtyping, developmentally timed interventions and neurodiversity-informed research and policy.

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