Early identification of behavioral risk markers for anxiety is essential to optimize long-term outcomes in children with neurodevelopmental disorders. This study analyzed attentional avoidance and its relation to anxiety and autism spectrum disorder (ASD) symptomatology during social and nonsocial fear conditions in toddlers with fragile X syndrome (FXS) and Down syndrome (DS). Toddlers with FXS and DS exhibited increased nonsocial attentional avoidance relative to typically developing (TD) toddlers. Attentional avoidance was not related to anxiety symptom severity in any group; however, higher ASD symptom severity was related to more social attentional avoidance in the FXS and TD groups. Findings suggest that there may be different underlying mechanisms driving attentional avoidance across neurodevelopmental disorders.

中文翻译：

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脆性 X 综合征和唐氏综合征幼儿的注意力偏差和前驱焦虑症状。

早期识别焦虑的行为风险标志物对于优化神经发育障碍儿童的长期预后至关重要。本研究分析了脆性 X 综合征 (FXS) 和唐氏综合征 (DS) 幼儿在社交和非社交恐惧条件下的注意力回避及其与焦虑和自闭症谱系障碍 (ASD) 症状的关系。与正常发育 (TD) 幼儿相比，患有 FXS 和 DS 的幼儿表现出更多的非社交注意回避。注意回避与任何组的焦虑症状严重程度无关；然而，较高的 ASD 症状严重程度与 FXS 和 TD 组中更多的社会注意力回避有关。研究结果表明，可能存在不同的潜在机制导致神经发育障碍中的注意力回避。